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-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/description.h:20,
                 from /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/common/description.cc:8:
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:109:27: error: ‘string_view’ is not a member of ‘std’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> fixed_;
                           ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:109:27: note: ‘std::string_view’ is only available from C++17 onwards
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:109:27: error: ‘string_view’ is not a member of ‘std’
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:109:27: note: ‘std::string_view’ is only available from C++17 onwards
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:109:71: error: template argument 1 is invalid
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> fixed_;
                                                                       ^~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:109:71: error: template argument 3 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:109:71: error: template argument 4 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:109:71: error: template argument 5 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:110:27: error: ‘string_view’ is not a member of ‘std’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> param_;
                           ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:110:27: note: ‘std::string_view’ is only available from C++17 onwards
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:110:27: error: ‘string_view’ is not a member of ‘std’
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:110:27: note: ‘std::string_view’ is only available from C++17 onwards
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:110:71: error: template argument 1 is invalid
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>> param_;
                                                                       ^~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:110:71: error: template argument 3 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:110:71: error: template argument 4 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:110:71: error: template argument 5 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:111:27: error: ‘string_view’ is not a member of ‘std’
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>>
                           ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:111:27: note: ‘std::string_view’ is only available from C++17 onwards
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:111:27: error: ‘string_view’ is not a member of ‘std’
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:111:27: note: ‘std::string_view’ is only available from C++17 onwards
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:111:71: error: template argument 1 is invalid
   std::unordered_map<std::string_view, std::shared_ptr<SegmentTreeNode>>
                                                                       ^~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:111:71: error: template argument 3 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:111:71: error: template argument 4 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:111:71: error: template argument 5 is invalid
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:123:48: error: ‘string_view’ in namespace ‘std’ does not name a type
   static SegmentType getSegmentType(const std::string_view &fragment);
                                                ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:123:43: note: ‘std::string_view’ is only available from C++17 onwards
   static SegmentType getSegmentType(const std::string_view &fragment);
                                           ^~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:141:24: error: ‘string_view’ in namespace ‘std’ does not name a type
   findRoute(const std::string_view &path, std::vector<TypedParam> &params,
                        ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:141:19: note: ‘std::string_view’ is only available from C++17 onwards
   findRoute(const std::string_view &path, std::vector<TypedParam> &params,
                   ^~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:169:28: error: ‘string_view’ in namespace ‘std’ does not name a type
   void addRoute(const std::string_view &path, const Route::Handler &handler,
                            ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:169:23: note: ‘std::string_view’ is only available from C++17 onwards
   void addRoute(const std::string_view &path, const Route::Handler &handler,
                       ^~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:182:31: error: ‘string_view’ in namespace ‘std’ does not name a type
   bool removeRoute(const std::string_view &path);
                               ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:182:26: note: ‘std::string_view’ is only available from C++17 onwards
   bool removeRoute(const std::string_view &path);
                          ^~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:198:24: error: ‘string_view’ in namespace ‘std’ does not name a type
   findRoute(const std::string_view &path) const;
                        ^~~~~~~~~~~
/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/source_subfolder/src/../include/pistache/router.h:198:19: note: ‘std::string_view’ is only available from C++17 onwards
   findRoute(const std::string_view &path) const;
                   ^~~
make[2]: *** [source_subfolder/src/CMakeFiles/pistache.dir/common/description.cc.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [source_subfolder/src/CMakeFiles/pistache.dir/all] Error 2
make: *** [all] Error 2
pistache/cci.20201127: WARN: Build folder is dirty, removing it: /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f
pistache/cci.20201127: ERROR: Package '78a7c1ab4fbc63c3d98f44735faa02e70d65f34f' build failed
pistache/cci.20201127: WARN: Build folder /home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f
ERROR: pistache/cci.20201127: Error in build() method, line 86
	cmake.build()
	ConanException: Error 2 while executing cmake --build '/home/conan/w/cci_PR-3719/.conan/data/pistache/cci.20201127/_/_/build/78a7c1ab4fbc63c3d98f44735faa02e70d65f34f/build_subfolder' '--' '-j3'