******************************************************************************** conan install aws-c-auth/0.6.8@#1059f7c493de027389fa380deac3285a --build=aws-c-auth -pr /Users/jenkins/w/prod/BuildSingleReference/189296/fd879f66-ca95-4a0d-84d5-339ef7dc9df7/profile_osx_130_libcpp_apple-clang_release_64.aws-c-auth-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/.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/.conan/profiles/default *** *** Or override with -s compiler='other' -s ...s*** Configuration: [settings] arch=x86_64 build_type=Release compiler=apple-clang compiler.libcxx=libc++ compiler.version=13.0 os=Macos [options] aws-c-auth: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 aws-c-common/0.8.2: Not found in local cache, looking in remotes... aws-c-common/0.8.2: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz aws-c-common/0.8.2: Downloaded recipe revision 8dd59e177fd439e4ff7b845497a3cbd9 aws-c-cal/0.5.13: Not found in local cache, looking in remotes... aws-c-cal/0.5.13: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz aws-c-cal/0.5.13: Downloaded recipe revision 0d38baec053393667bf93d5072d0a649 aws-c-io/0.10.20: Not found in local cache, looking in remotes... aws-c-io/0.10.20: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz aws-c-io/0.10.20: Downloaded recipe revision 4f2b71797fe5703cf891b264fa092ce8 aws-c-http/0.6.13: Not found in local cache, looking in remotes... aws-c-http/0.6.13: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz aws-c-http/0.6.13: Downloaded recipe revision b67b91e30d70178a9de10c6db6e157c9 aws-c-compression/0.2.15: Not found in local cache, looking in remotes... aws-c-compression/0.2.15: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz aws-c-compression/0.2.15: Downloaded recipe revision 890dd9907d09e3cb01b0a5996fcaad49 aws-c-sdkutils/0.1.3: Not found in local cache, looking in remotes... aws-c-sdkutils/0.1.3: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz aws-c-sdkutils/0.1.3: Downloaded recipe revision d19b8a23932e60d48cdbeb93973ceef9 aws-c-auth/0.6.8: Forced build from source Installing package: aws-c-auth/0.6.8 Requirements aws-c-auth/0.6.8 from local cache - Cache aws-c-cal/0.5.13 from 'conan-center' - Downloaded aws-c-common/0.8.2 from 'conan-center' - Downloaded aws-c-compression/0.2.15 from 'conan-center' - Downloaded aws-c-http/0.6.13 from 'conan-center' - Downloaded aws-c-io/0.10.20 from 'conan-center' - Downloaded aws-c-sdkutils/0.1.3 from 'conan-center' - Downloaded Packages aws-c-auth/0.6.8:1322c2acdf5c9757dd89d40c22f0d5244b685ef4 - Build aws-c-cal/0.5.13:52e2d794b2a5d08befa797649ade3e6a7f803717 - Download aws-c-common/0.8.2:7c7c516d23f69b9d56e5d3687a66841c1918699f - Download aws-c-compression/0.2.15:52e2d794b2a5d08befa797649ade3e6a7f803717 - Download aws-c-http/0.6.13:5e85febda8bcd6052037579235f9bf38de2c82a6 - Download aws-c-io/0.10.20:66f6d41cb7d8a7a536ff987b8d639fc8d3072318 - Download aws-c-sdkutils/0.1.3:52e2d794b2a5d08befa797649ade3e6a7f803717 - Download Installing (downloading, building) binaries... aws-c-common/0.8.2: Retrieving package 7c7c516d23f69b9d56e5d3687a66841c1918699f from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-common/0.8.2: Package installed 7c7c516d23f69b9d56e5d3687a66841c1918699f aws-c-common/0.8.2: Downloaded package revision f89f294ae4424af46408526aba4525d1 aws-c-cal/0.5.13: Retrieving package 52e2d794b2a5d08befa797649ade3e6a7f803717 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-cal/0.5.13: Package installed 52e2d794b2a5d08befa797649ade3e6a7f803717 aws-c-cal/0.5.13: Downloaded package revision d9a0fca015607127caa9cb0bb05dd33d aws-c-compression/0.2.15: Retrieving package 52e2d794b2a5d08befa797649ade3e6a7f803717 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-compression/0.2.15: Package installed 52e2d794b2a5d08befa797649ade3e6a7f803717 aws-c-compression/0.2.15: Downloaded package revision 8c388d4e0326bbc8d2b049e044bb586a aws-c-sdkutils/0.1.3: Retrieving package 52e2d794b2a5d08befa797649ade3e6a7f803717 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-sdkutils/0.1.3: Package installed 52e2d794b2a5d08befa797649ade3e6a7f803717 aws-c-sdkutils/0.1.3: Downloaded package revision 49fbf2a7fe7156e7bb4337cef07777cf aws-c-io/0.10.20: Retrieving package 66f6d41cb7d8a7a536ff987b8d639fc8d3072318 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-io/0.10.20: Package installed 66f6d41cb7d8a7a536ff987b8d639fc8d3072318 aws-c-io/0.10.20: Downloaded package revision 3cc0241bad75c03417fd09b49879e391 aws-c-http/0.6.13: Retrieving package 5e85febda8bcd6052037579235f9bf38de2c82a6 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-http/0.6.13: Package installed 5e85febda8bcd6052037579235f9bf38de2c82a6 aws-c-http/0.6.13: Downloaded package revision aef9e30836d2a14bc6c37e922e3ec727 [HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK aws-c-auth/0.6.8: Configuring sources in /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/source/src aws-c-auth/0.6.8: [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 aws-c-auth/0.6.8: Copying sources to build folder aws-c-auth/0.6.8: Building your package in /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4 aws-c-auth/0.6.8: Generator txt created conanbuildinfo.txt aws-c-auth/0.6.8: Calling generate() aws-c-auth/0.6.8: Preset 'release' added to CMakePresets.json. Invoke it manually using 'cmake --preset release' aws-c-auth/0.6.8: 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/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release/generators/conan_toolchain.cmake -DCMAKE_POLICY_DEFAULT_CMP0091=NEW -DCMAKE_BUILD_TYPE=Release' aws-c-auth/0.6.8: 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 aws-c-auth/0.6.8: Calling build() aws-c-auth/0.6.8: CMake command: cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release/generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/src" ----Running------ > cmake -G "Unix Makefiles" -DCMAKE_TOOLCHAIN_FILE="/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release/generators/conan_toolchain.cmake" -DCMAKE_INSTALL_PREFIX="/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4" -DCMAKE_POLICY_DEFAULT_CMP0091="NEW" -DCMAKE_BUILD_TYPE="Release" "/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/src" ----------------- -- Using Conan toolchain: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release/generators/conan_toolchain.cmake -- Conan toolchain: Setting CMAKE_POSITION_INDEPENDENT_CODE=ON (options.fPIC) -- Conan toolchain: Setting BUILD_SHARED_LIBS = OFF -- The C compiler identification is AppleClang 13.0.0.13000029 -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Check for working C compiler: /Applications/conan/xcode/13.0/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc - skipped -- Detecting C compile features -- Detecting C compile features - done -- Performing Test HAS_FPIC_FLAG -- Performing Test HAS_FPIC_FLAG - Success -- Performing Test HAS_64BIT_FILE_OFFSET_BY_DEFAULT -- Performing Test HAS_64BIT_FILE_OFFSET_BY_DEFAULT - Success -- Looking for fseeko -- Looking for fseeko - found -- Looking for stdint.h -- Looking for stdint.h - found -- Looking for stdbool.h -- Looking for stdbool.h - found -- Performing Test HAS_WGNU -- Performing Test HAS_WGNU - Success -- Performing Test NO_GNU_EXPR -- Performing Test NO_GNU_EXPR - Success -- Performing Test HAVE_SYSCONF -- Performing Test HAVE_SYSCONF - Success -- Performing Test HAS_SANITIZERS -- Performing Test HAS_SANITIZERS - Success -- attempting to use sanitizer list address;undefined -- Conan: Component target declared 'AWS::aws-c-sdkutils' -- Conan: Component target declared 'AWS::aws-c-common' -- Conan: Component target declared 'AWS::aws-c-cal' -- Conan: Component target declared 'AWS::aws-c-http' -- Conan: Component target declared 'AWS::aws-c-compression' -- Conan: Component target declared 'AWS::aws-c-io' -- Configuring done -- Generating done -- Build files have been written to: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release aws-c-auth/0.6.8: CMake command: cmake --build "/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release" '--' '-j4' ----Running------ > cmake --build "/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release" '--' '-j4' ----------------- [ 3%] Building C object CMakeFiles/aws-c-auth.dir/source/auth.c.o [ 6%] Building C object CMakeFiles/aws-c-auth.dir/source/aws_imds_client.c.o [ 10%] Building C object CMakeFiles/aws-c-auth.dir/source/aws_profile.c.o [ 13%] Building C object CMakeFiles/aws-c-auth.dir/source/aws_signing.c.o [ 16%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials.c.o [ 20%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_cached.c.o [ 23%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_chain.c.o [ 26%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_default_chain.c.o [ 30%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_delegate.c.o [ 33%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_ecs.c.o [ 36%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_environment.c.o [ 40%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_imds.c.o [ 43%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_process.c.o [ 46%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_profile.c.o [ 50%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_static.c.o [ 53%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_sts.c.o [ 56%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_sts_web_identity.c.o [ 60%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_provider_x509.c.o [ 63%] Building C object CMakeFiles/aws-c-auth.dir/source/credentials_utils.c.o [ 66%] Building C object CMakeFiles/aws-c-auth.dir/source/external/cJSON.c.o [ 70%] Building C object CMakeFiles/aws-c-auth.dir/source/key_derivation.c.o [ 73%] Building C object CMakeFiles/aws-c-auth.dir/source/signable.c.o [ 76%] Building C object CMakeFiles/aws-c-auth.dir/source/signable_chunk.c.o [ 80%] Building C object CMakeFiles/aws-c-auth.dir/source/signable_http_request.c.o [ 83%] Building C object CMakeFiles/aws-c-auth.dir/source/signable_trailer.c.o [ 86%] Building C object CMakeFiles/aws-c-auth.dir/source/signing.c.o [ 90%] Building C object CMakeFiles/aws-c-auth.dir/source/signing_config.c.o [ 93%] Building C object CMakeFiles/aws-c-auth.dir/source/signing_result.c.o [ 96%] Building C object CMakeFiles/aws-c-auth.dir/source/sigv4_http_request.c.o [100%] Linking C static library libaws-c-auth.a [100%] Built target aws-c-auth aws-c-auth/0.6.8: Package '1322c2acdf5c9757dd89d40c22f0d5244b685ef4' built aws-c-auth/0.6.8: Build folder /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release aws-c-auth/0.6.8: Generated conaninfo.txt aws-c-auth/0.6.8: Generated conanbuildinfo.txt aws-c-auth/0.6.8: Generating the package aws-c-auth/0.6.8: Package folder /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4 aws-c-auth/0.6.8: Calling package() aws-c-auth/0.6.8: Copied 1 file: LICENSE aws-c-auth/0.6.8: CMake command: cmake --install "/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release" --prefix "/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4" ----Running------ > cmake --install "/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/build/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/build/Release" --prefix "/Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4" ----------------- -- Install configuration: "Release" -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/lib/libaws-c-auth.a -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/include/aws/auth/auth.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/include/aws/auth/aws_imds_client.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/include/aws/auth/credentials.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/include/aws/auth/exports.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/include/aws/auth/signable.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/include/aws/auth/signing.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/include/aws/auth/signing_config.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/include/aws/auth/signing_result.h -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/lib/aws-c-auth/cmake/static/aws-c-auth-targets.cmake -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/lib/aws-c-auth/cmake/static/aws-c-auth-targets-release.cmake -- Installing: /Users/jenkins/w/prod/BuildSingleReference/.conan/data/aws-c-auth/0.6.8/_/_/package/1322c2acdf5c9757dd89d40c22f0d5244b685ef4/lib/aws-c-auth/cmake/aws-c-auth-config.cmake [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 aws-c-auth/0.6.8 package(): Packaged 1 file: LICENSE aws-c-auth/0.6.8 package(): Packaged 8 '.h' files aws-c-auth/0.6.8 package(): Packaged 1 '.a' file: libaws-c-auth.a aws-c-auth/0.6.8: Package '1322c2acdf5c9757dd89d40c22f0d5244b685ef4' created aws-c-auth/0.6.8: Created package revision a6f9e9bf1368b1a8036b65a7205f01d8 [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 aws-c-auth/0.6.8: 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 aws-c-auth/0.6.8: 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