CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.cpp:17:0:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SingletonThreadLocal.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Random.cpp:26:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:128,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:136:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:311:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder;
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:312:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder;
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:313:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder;
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:315:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:384:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder {
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:447:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/CallOnce.h:25:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/detail/MemoryIdler.cpp:28:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/detail/ThreadLocalDetail.h:33:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/detail/ThreadLocalDetail.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/ThreadPoolExecutor.h:25:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/CPUThreadPoolExecutor.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/CPUThreadPoolExecutor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/ThreadPoolExecutor.h:25:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:30:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/GlobalExecutor.cpp:21:0:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:136:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/GlobalExecutor.cpp:22:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:311:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder;
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:312:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder;
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:313:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder;
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:315:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:384:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder {
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:447:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp: In constructor ‘folly::EDFThreadPoolExecutor::TaskQueue::TaskQueue()’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
       : buckets_{}, curDeadline_(kLatestDeadline), numItems_(0) {}
                                                               ^
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: warning: converting to ‘std::priority_queue<std::shared_ptr<folly::EDFThreadPoolExecutor::Task>, std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >, folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare>’ from initializer list would use explicit constructor ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = std::shared_ptr<folly::EDFThreadPoolExecutor::Task>; _Sequence = std::vector<std::shared_ptr<folly::EDFThreadPoolExecutor::Task> >; _Compare = folly::EDFThreadPoolExecutor::TaskQueue::Bucket::Compare]’
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/EDFThreadPoolExecutor.cpp:105:63: note: in C++11 and above a default constructor can be explicit
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseManager.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/IOThreadPoolExecutor.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/GlobalExecutor.cpp:24:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/GlobalThreadPoolList.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/GlobalThreadPoolList.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/ThreadPoolExecutor.h:25:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/IOThreadPoolExecutor.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/IOThreadPoolExecutor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseManager.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/IOThreadPoolExecutor.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/IOThreadPoolExecutor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/QueuedImmediateExecutor.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/QueuedImmediateExecutor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SingletonThreadLocal.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrThrLocal.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrDomain.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Hazptr.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/concurrency/UnboundedQueue.h:30,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/SerialExecutor.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/SerialExecutor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/ThreadPoolExecutor.h:25:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/ThreadPoolExecutor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SingletonThreadLocal.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrThrLocal.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrDomain.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Hazptr.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/concurrency/UnboundedQueue.h:30,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimedDrivableExecutor.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimedDrivableExecutor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TLRefCount.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/ReadMostlySharedPtr.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/AtomicReadMostlyMainPtr.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/AtomicReadMostlyMainPtr.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SingletonThreadLocal.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrThrLocal.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrDomain.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Hazptr.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/concurrency/UnboundedQueue.h:30,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimedDrivableExecutor.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:34,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimekeeperScheduledExecutor.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimekeeperScheduledExecutor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future-inl.h:35,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:2614,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimekeeperScheduledExecutor.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimekeeperScheduledExecutor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:128,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/JSONSchema.cpp:26:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:136:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/JSONSchema.cpp:26:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:311:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder;
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:312:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder;
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:313:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder;
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:315:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:384:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder {
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:447:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFD.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/STTimerFDTimeoutManager.h:18,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/STTimerFDTimeoutManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFD.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/STTimerFDTimeoutManager.h:18,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/STTimerFDTimeoutManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFD.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFD.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFD.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFD.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFD.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFDTimeoutManager.h:18,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFDTimeoutManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFD.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFDTimeoutManager.h:18,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TimerFDTimeoutManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/Core.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/Core.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future-inl.h:35,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:2614,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/Core.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/Core.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/Core.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/ObserverManager.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/ObserverManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future-inl.h:35,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:2614,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/Core.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/ObserverManager.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/ObserverManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:136:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/observer/detail/ObserverManager.cpp:24:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:311:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder;
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:312:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder;
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:313:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder;
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:315:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:384:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder {
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:447:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/settings/detail/SettingsImpl.h:27:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/settings/Settings.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/settings/Settings.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/Request.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Fiber.h:29,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton-inl.h:17,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:304,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/Request.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Fiber.h:29,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Fiber.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerInternal.h:36,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Fiber.cpp:26:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerInternal.h:36,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/Request.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerInternal.h:37,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerInternal.h:36,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/EventBaseLoopController.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerMap.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerMap.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/Request.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerInternal.h:37,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/EventBaseLoopController.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerMap.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerMap.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:128,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/GuardPageAllocator.cpp:27:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:136:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/GuardPageAllocator.cpp:27:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:311:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder;
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:312:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder;
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:313:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder;
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:315:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:384:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder {
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:447:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Semaphore.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Semaphore.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Semaphore.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Semaphore.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerInternal.h:36,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManager.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/SimpleLoopController.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/SimpleLoopController.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/Request.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManagerInternal.h:37,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/FiberManager.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/SimpleLoopController.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/SimpleLoopController.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SingletonThreadLocal.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrThrLocal.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrDomain.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Hazptr.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/concurrency/UnboundedQueue.h:30,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimedDrivableExecutor.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:34,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Barrier.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Barrier.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future-inl.h:35,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:2614,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Barrier.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Barrier.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SingletonThreadLocal.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrThrLocal.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrDomain.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Hazptr.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/concurrency/UnboundedQueue.h:30,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimedDrivableExecutor.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:34,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/ManualTimekeeper.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/ManualTimekeeper.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future-inl.h:35,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:2614,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future-inl.h:35,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:2614,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/ManualTimekeeper.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/ManualTimekeeper.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SingletonThreadLocal.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrThrLocal.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrDomain.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Hazptr.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/concurrency/UnboundedQueue.h:30,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/TimedDrivableExecutor.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:34,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/ThreadWheelTimekeeper.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/ThreadWheelTimekeeper.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/fibers/Baton.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future-inl.h:35,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/Future.h:2614,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/ThreadWheelTimekeeper.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/ThreadWheelTimekeeper.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:136:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/futures/ThreadWheelTimekeeper.cpp:19:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:311:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder;
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:312:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder;
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:313:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder;
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:315:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:384:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder {
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:447:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:128,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/init/Init.cpp:21:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:136:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/init/Init.cpp:21:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:311:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder;
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:312:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder;
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:313:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder;
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:315:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:384:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder {
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:447:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/TLRefCount.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/experimental/ReadMostlySharedPtr.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/GlobalShutdownSocketSet.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/GlobalShutdownSocketSet.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Singleton.h:136:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/GlobalShutdownSocketSet.cpp:19:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:311:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder;
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:312:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder;
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:313:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder;
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:315:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:384:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradedHolder {
                         ^~~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/RWSpinLock.h:447:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncTransport.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncPipe.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncPipe.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncTransport.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncPipe.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncPipe.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncServerSocket.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncServerSocket.cpp:21:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncServerSocket.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncServerSocket.cpp:21:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncTransport.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncPipe.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSSLSocket.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSSLSocket.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncTransport.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncPipe.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSSLSocket.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSSLSocket.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSignalHandler.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSignalHandler.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSignalHandler.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSignalHandler.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncTransport.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocket.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocket.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncTransport.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocket.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocket.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncTimeout.cpp:18:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncTimeout.cpp:18:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncUDPSocket.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncUDPSocket.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncUDPSocket.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncUDPSocket.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseLocal.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseLocal.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.cpp:21:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseLocal.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseLocal.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.cpp:21:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseManager.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseManager.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseManager.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/ScopedEventBaseThread.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseThread.cpp:20:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/ScopedEventBaseThread.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBaseThread.cpp:20:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventHandler.cpp:19:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventHandler.cpp:19:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/Request.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.cpp:25:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/Request.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/Request.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/SSLContext.cpp:22:0:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/ScopedEventBaseThread.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/ScopedEventBaseThread.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/ScopedEventBaseThread.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/ScopedEventBaseThread.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/VirtualEventBase.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/VirtualEventBase.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/VirtualEventBase.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/VirtualEventBase.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/AsyncLogWriter.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/AsyncFileWriter.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/AsyncFileWriter.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/AsyncLogWriter.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/AsyncLogWriter.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/AsyncLogWriter.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/AsyncFileWriter.h:19,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/FileWriterFactory.cpp:21:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LoggerDB.h:28,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/ImmediateFileWriter.cpp:21:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogCategory.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogCategory.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LoggerDB.h:28,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/Init.cpp:21:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogCategory.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogStream.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogStream.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogCategory.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogStreamProcessor.h:23,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogStreamProcessor.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogCategory.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/Logger.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/Logger.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LoggerDB.h:28,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LoggerDB.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogCategory.h:25,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/LogStream.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/xlog.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/logging/xlog.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/memory/ThreadCachedArena.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/memory/ThreadCachedArena.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ssl/detail/OpenSSLThreading.cpp:23:0:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/stats/detail/BufferedStat.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/stats/QuantileEstimator.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/stats/QuantileEstimator.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SingletonThreadLocal.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrThrLocal.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/HazptrDomain.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Hazptr.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Hazptr.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/executors/QueuedImmediateExecutor.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Rcu.h:26,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/synchronization/Rcu.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/Synchronized.h:32:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:40,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncServerSocket.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/test/ScopedBoundPort.cpp:20:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestruction.h:19:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/HHWheelTimer.h:21,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/EventBase.h:47,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncSocketBase.h:20,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/AsyncServerSocket.h:22,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/test/ScopedBoundPort.cpp:20:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/io/async/DelayedDestructionBase.h:63:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD DestructorGuard {
                         ^~~~~~~~~~~~~~~
In file included from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/ThreadLocal.h:50:0,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SingletonThreadLocal.h:24,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/test/DeterministicSchedule.h:32,
                 from /home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/test/DeterministicSchedule.cpp:17:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<true>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1547:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::WriteHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1444:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD WriteHolder {
                         ^~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::UpgradeHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1394:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD UpgradeHolder {
                         ^~~~~~~~~~~~~
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h: In instantiation of ‘class folly::SharedMutexImpl<false>::ReadHolder’:
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1548:23:   required from here
/home/conan/w/cci_PR-3711/.conan/data/folly/2019.10.21.00/_/_/build/daca368c32ebe18cf6ffdc1de8fa9ea6ba765cf7/source_subfolder/folly/SharedMutex.h:1332:25: warning: ‘__warn_unused_result__’ attribute only applies to function types [-Wattributes]
   class FOLLY_NODISCARD ReadHolder {
                         ^~~~~~~~~~
CMake Warning:
  Manually-specified variables were not used by the project:

    CMAKE_EXPORT_NO_PACKAGE_REGISTRY


WARN: libevent/2.1.12: requirement openssl/1.1.1g overridden by folly/2019.10.21.00 to openssl/1.1.1h