******************************************************************************** conan install benchmark/1.8.0@#d1b297681b42bade163a662acc942430 --build=benchmark -pr /Users/jenkins/w/prod/BuildSingleReference@2/241550/74af3614-f848-4f53-a253-a8eb96b417b5/profile_osx_130_libcpp_apple-clang_debug_64.benchmark-shared-False.txt -c tools.system.package_manager:mode=install -c tools.system.package_manager:sudo=True -c tools.apple:sdk_path=/Applications/conan/xcode/13.0/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk ******************************************************************************** Auto detecting your dev setup to initialize the default profile (/Users/jenkins/w/prod/BuildSingleReference@2/.conan/profiles/default) Found apple-clang 13.0 apple-clang>=13, using the major as version Default settings os=Macos os_build=Macos arch=x86_64 arch_build=x86_64 compiler=apple-clang compiler.version=13 compiler.libcxx=libc++ build_type=Release *** You can change them in /Users/jenkins/w/prod/BuildSingleReference@2/.conan/profiles/default *** *** Or override with -s compiler='other' -s ...s*** Configuration: [settings] arch=x86_64 build_type=Debug compiler=apple-clang compiler.libcxx=libc++ compiler.version=13.0 os=Macos [options] benchmark:shared=False [build_requires] [env] [conf] tools.system.package_manager:mode=install tools.system.package_manager:sudo=True tools.apple:sdk_path=/Applications/conan/xcode/13.0/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX11.3.sdk benchmark/1.8.0: Forced build from source cmake/3.26.3: Not found in local cache, looking in remotes... cmake/3.26.3: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz cmake/3.26.3: Downloaded recipe revision 3c10902b72a4fa0c6eae5ff4575698aa Version ranges solved cmake/* versions found in 'conan-center' remote Version range '>=3.16.3 <4' required by 'benchmark/1.8.0' resolved to 'cmake/3.26.3' in remote 'conan-center' Installing package: benchmark/1.8.0 Requirements benchmark/1.8.0 from local cache - Cache Packages benchmark/1.8.0:45dee9a7e4be00a0314d6c14b23ef8344f6e86ab - Build Build requirements cmake/3.26.3 from 'conan-center' - Downloaded Build requirements packages cmake/3.26.3:cc471ed355602ffa7007968c83aa4e7e648a38b5 - Download Installing (downloading, building) binaries... cmake/3.26.3: Retrieving package cc471ed355602ffa7007968c83aa4e7e648a38b5 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz cmake/3.26.3: Package installed cc471ed355602ffa7007968c83aa4e7e648a38b5 cmake/3.26.3: Downloaded package revision 0df7ffef97f2c54bacd6e4338d6e3fbd cmake/3.26.3: Appending PATH environment variable: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/cmake/3.26.3/_/_/package/cc471ed355602ffa7007968c83aa4e7e648a38b5/CMake.app/Contents/bin benchmark/1.8.0: Applying build-requirement: cmake/3.26.3 [HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK benchmark/1.8.0: Configuring sources in /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/source/src benchmark/1.8.0: [HOOK - conan-center.py] post_source(): [LIBCXX MANAGEMENT (KB-H011)] OK [HOOK - conan-center.py] post_source(): [CPPSTD MANAGEMENT (KB-H022)] OK [HOOK - conan-center.py] post_source(): [SHORT_PATHS USAGE (KB-H066)] OK benchmark/1.8.0: Copying sources to build folder benchmark/1.8.0: Building your package in /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab benchmark/1.8.0: Generator txt created conanbuildinfo.txt benchmark/1.8.0: Calling generate() benchmark/1.8.0: Preset 'debug' added to CMakePresets.json. Invoke it manually using 'cmake --preset debug' benchmark/1.8.0: If your CMake version is not compatible with CMakePresets (<3.19) call cmake like: 'cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE=/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug/generators/conan_toolchain.cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Debug' benchmark/1.8.0: Aggregating env generators [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK. 'fPIC' option found and apparently well managed [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK benchmark/1.8.0: Calling build() benchmark/1.8.0: CMake command: cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug/generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Debug" "/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/src" ----Running------ > cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug/generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Debug" "/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/src" ----------------- -- Using Conan toolchain: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug/generators/conan_toolchain.cmake -- Conan toolchain: Setting CMAKE_POSITION_INDEPENDENT_CODE=ON (options.fPIC) -- Conan toolchain: Setting BUILD_SHARED_LIBS = OFF -- The CXX compiler identification is AppleClang 13.0.0.13000029 -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Check for working CXX compiler: /Applications/conan/xcode/13.0/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ - skipped -- Detecting CXX compile features -- Detecting CXX compile features - done -- Failed to find LLVM FileCheck -- Found Git: /usr/local/bin/git (found version "2.35.1") -- git version: v0.0.0 normalized to 0.0.0 -- Version: 1.8.0 -- Looking for shm_open in rt -- Looking for shm_open in rt - not found -- Performing Test HAVE_CXX_FLAG_WALL -- Performing Test HAVE_CXX_FLAG_WALL - Success -- Performing Test HAVE_CXX_FLAG_WEXTRA -- Performing Test HAVE_CXX_FLAG_WEXTRA - Success -- Performing Test HAVE_CXX_FLAG_WSHADOW -- Performing Test HAVE_CXX_FLAG_WSHADOW - Success -- Performing Test HAVE_CXX_FLAG_WFLOAT_EQUAL -- Performing Test HAVE_CXX_FLAG_WFLOAT_EQUAL - Success -- Performing Test HAVE_CXX_FLAG_WSUGGEST_OVERRIDE -- Performing Test HAVE_CXX_FLAG_WSUGGEST_OVERRIDE - Success -- Performing Test HAVE_CXX_FLAG_PEDANTIC -- Performing Test HAVE_CXX_FLAG_PEDANTIC - Success -- Performing Test HAVE_CXX_FLAG_PEDANTIC_ERRORS -- Performing Test HAVE_CXX_FLAG_PEDANTIC_ERRORS - Success -- Performing Test HAVE_CXX_FLAG_WSHORTEN_64_TO_32 -- Performing Test HAVE_CXX_FLAG_WSHORTEN_64_TO_32 - Success -- Performing Test HAVE_CXX_FLAG_FSTRICT_ALIASING -- Performing Test HAVE_CXX_FLAG_FSTRICT_ALIASING - Success -- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED_DECLARATIONS -- Performing Test HAVE_CXX_FLAG_WNO_DEPRECATED_DECLARATIONS - Success -- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING -- Performing Test HAVE_CXX_FLAG_WSTRICT_ALIASING - Success -- Performing Test HAVE_CXX_FLAG_WD654 -- Performing Test HAVE_CXX_FLAG_WD654 - Failed -- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY -- Performing Test HAVE_CXX_FLAG_WTHREAD_SAFETY - Success -- Enabling additional flags: -DINCLUDE_DIRECTORIES=/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/src/include -- Compiling and running to test HAVE_THREAD_SAFETY_ATTRIBUTES -- Performing Test HAVE_THREAD_SAFETY_ATTRIBUTES -- success -- Performing Test HAVE_CXX_FLAG_COVERAGE -- Performing Test HAVE_CXX_FLAG_COVERAGE - Success -- Performing Test HAVE_CXX_FLAG_STDLIB_LIBCXX -- Performing Test HAVE_CXX_FLAG_STDLIB_LIBCXX - Success -- Compiling and running to test HAVE_STD_REGEX -- Performing Test HAVE_STD_REGEX -- success -- Compiling and running to test HAVE_GNU_POSIX_REGEX -- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile -- Compiling and running to test HAVE_POSIX_REGEX -- Performing Test HAVE_POSIX_REGEX -- success -- Compiling and running to test HAVE_STEADY_CLOCK -- Performing Test HAVE_STEADY_CLOCK -- success -- Performing Test CMAKE_HAVE_LIBC_PTHREAD -- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success -- Found Threads: TRUE -- Compiling and running to test HAVE_PTHREAD_AFFINITY -- Performing Test HAVE_PTHREAD_AFFINITY -- failed to compile -- Configuring done (16.3s) -- Generating done (0.0s) -- Build files have been written to: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug benchmark/1.8.0: CMake command: cmake --build "/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug" '--' '-j4' ----Running------ > cmake --build "/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug" '--' '-j4' ----------------- [ 4%] Building CXX object src/CMakeFiles/benchmark.dir/benchmark.cc.o [ 9%] Building CXX object src/CMakeFiles/benchmark.dir/benchmark_api_internal.cc.o [ 13%] Building CXX object src/CMakeFiles/benchmark.dir/benchmark_name.cc.o [ 18%] Building CXX object src/CMakeFiles/benchmark.dir/benchmark_register.cc.o [ 22%] Building CXX object src/CMakeFiles/benchmark.dir/benchmark_runner.cc.o [ 27%] Building CXX object src/CMakeFiles/benchmark.dir/check.cc.o [ 31%] Building CXX object src/CMakeFiles/benchmark.dir/colorprint.cc.o [ 36%] Building CXX object src/CMakeFiles/benchmark.dir/commandlineflags.cc.o [ 40%] Building CXX object src/CMakeFiles/benchmark.dir/complexity.cc.o [ 45%] Building CXX object src/CMakeFiles/benchmark.dir/console_reporter.cc.o [ 50%] Building CXX object src/CMakeFiles/benchmark.dir/counter.cc.o [ 54%] Building CXX object src/CMakeFiles/benchmark.dir/csv_reporter.cc.o [ 59%] Building CXX object src/CMakeFiles/benchmark.dir/json_reporter.cc.o [ 63%] Building CXX object src/CMakeFiles/benchmark.dir/perf_counters.cc.o [ 68%] Building CXX object src/CMakeFiles/benchmark.dir/reporter.cc.o [ 72%] Building CXX object src/CMakeFiles/benchmark.dir/statistics.cc.o [ 77%] Building CXX object src/CMakeFiles/benchmark.dir/string_util.cc.o [ 81%] Building CXX object src/CMakeFiles/benchmark.dir/sysinfo.cc.o [ 86%] Building CXX object src/CMakeFiles/benchmark.dir/timers.cc.o [ 90%] Linking CXX static library libbenchmark.a [ 90%] Built target benchmark [ 95%] Building CXX object src/CMakeFiles/benchmark_main.dir/benchmark_main.cc.o [100%] Linking CXX static library libbenchmark_main.a [100%] Built target benchmark_main benchmark/1.8.0: Package '45dee9a7e4be00a0314d6c14b23ef8344f6e86ab' built benchmark/1.8.0: Build folder /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug benchmark/1.8.0: Generated conaninfo.txt benchmark/1.8.0: Generated conanbuildinfo.txt benchmark/1.8.0: Generating the package benchmark/1.8.0: Package folder /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab benchmark/1.8.0: Calling package() benchmark/1.8.0: Copied 1 file: LICENSE benchmark/1.8.0: CMake command: cmake --install "/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug" --prefix "/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab" ----Running------ > cmake --install "/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/build/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/build/Debug" --prefix "/Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab" ----------------- -- Install configuration: "Debug" -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/lib/libbenchmark.a -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/lib/libbenchmark_main.a -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/include/benchmark -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/include/benchmark/export.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/include/benchmark/benchmark.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/lib/cmake/benchmark/benchmarkConfig.cmake -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/lib/cmake/benchmark/benchmarkConfigVersion.cmake -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/lib/pkgconfig/benchmark.pc -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/lib/cmake/benchmark/benchmarkTargets.cmake -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/lib/cmake/benchmark/benchmarkTargets-debug.cmake -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/perf_counters.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/random_interleaving.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/user_guide.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/releasing.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/AssemblyTests.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/dependencies.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/index.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/_config.yml -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/platform_specific_build_instructions.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/reducing_variance.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/tools.md -- Installing: /Users/jenkins/w/prod/BuildSingleReference@2/.conan/data/benchmark/1.8.0/_/_/package/45dee9a7e4be00a0314d6c14b23ef8344f6e86ab/share/doc/benchmark/python_bindings.md [HOOK - conan-center.py] post_package(): [PACKAGE LICENSE (KB-H012)] OK [HOOK - conan-center.py] post_package(): [DEFAULT PACKAGE LAYOUT (KB-H013)] OK [HOOK - conan-center.py] post_package(): [MATCHING CONFIGURATION (KB-H014)] OK [HOOK - conan-center.py] post_package(): [SHARED ARTIFACTS (KB-H015)] OK [HOOK - conan-center.py] post_package(): [STATIC ARTIFACTS (KB-H074)] OK [HOOK - conan-center.py] post_package(): [EITHER STATIC OR SHARED OF EACH LIB (KB-H076)] OK [HOOK - conan-center.py] post_package(): [PC-FILES (KB-H020)] OK [HOOK - conan-center.py] post_package(): [CMAKE-MODULES-CONFIG-FILES (KB-H016)] OK [HOOK - conan-center.py] post_package(): [PDB FILES NOT ALLOWED (KB-H017)] OK [HOOK - conan-center.py] post_package(): [LIBTOOL FILES PRESENCE (KB-H018)] OK [HOOK - conan-center.py] post_package(): [MS RUNTIME FILES (KB-H021)] OK [HOOK - conan-center.py] post_package(): [SHORT_PATHS USAGE (KB-H066)] OK [HOOK - conan-center.py] post_package(): [MISSING SYSTEM LIBS (KB-H043)] OK [HOOK - conan-center.py] post_package(): [APPLE RELOCATABLE SHARED LIBS (KB-H077)] OK benchmark/1.8.0 package(): Packaged 1 file: LICENSE benchmark/1.8.0 package(): Packaged 2 '.h' files: export.h, benchmark.h benchmark/1.8.0 package(): Packaged 2 '.a' files: libbenchmark.a, libbenchmark_main.a benchmark/1.8.0: Package '45dee9a7e4be00a0314d6c14b23ef8344f6e86ab' created benchmark/1.8.0: Created package revision 8161af7ff527a1c06bf5065f8ec9b2e9 [HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK [HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK [HOOK - conan-center.py] post_package_info(): [INCLUDE PATH DOES NOT EXIST (KB-H071)] OK Aggregating env generators CMake Warning: Manually-specified variables were not used by the project: CMAKE_POLICY_DEFAULT_CMP0091 benchmark/1.8.0: WARN: Using the new toolchains and generators without specifying a build profile (e.g: -pr:b=default) is discouraged and might cause failures and unexpected behavior