******************************************************************************** conan test conan-center-index/recipes/aws-c-event-stream/all/test_package/conanfile.py aws-c-event-stream/0.2.7@#e3980a593e3fd9ff116cdec94b077421 -pr /home/conan/w/prod/BuildSingleReference/10349/2f4a30f2-114e-4aba-b6ab-840de0f5fe93/profile_linux_12_libstdcpp_clang_release_64.aws-c-event-stream-shared-True.txt ******************************************************************************** Auto detecting your dev setup to initialize the default profile (/home/conan/w/prod/BuildSingleReference/.conan/profiles/default) CC and CXX: clang, clang++ Found clang 12.0 clang>=8, using the major as version Default settings os=Linux os_build=Linux arch=x86_64 arch_build=x86_64 compiler=clang compiler.version=12 compiler.libcxx=libstdc++ build_type=Release *** You can change them in /home/conan/w/prod/BuildSingleReference/.conan/profiles/default *** *** Or override with -s compiler='other' -s ...s*** Configuration: [settings] arch=x86_64 build_type=Release compiler=clang compiler.libcxx=libstdc++ compiler.version=12 os=Linux [options] aws-c-event-stream:shared=True [build_requires] [env] aws-checksums/0.1.12: Not found in local cache, looking in remotes... aws-checksums/0.1.12: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz aws-checksums/0.1.12: Downloaded recipe revision 0c482835013bd7762ec0718e52205c22 aws-c-common/0.6.19: Not found in local cache, looking in remotes... aws-c-common/0.6.19: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz aws-c-common/0.6.19: Downloaded recipe revision cf32a0cdd19ab356dfa6b6d579ed4bc6 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 9699126d8889135fd1ac22bf097a26c9 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 c30befa067203a92cccdc94e39e8031e openssl/1.1.1n: Not found in local cache, looking in remotes... openssl/1.1.1n: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz openssl/1.1.1n: Downloaded recipe revision 15565f1dcde351c64837550a2305577c s2n/1.3.9: Not found in local cache, looking in remotes... s2n/1.3.9: Trying with 'conan-center'... Downloading conanmanifest.txt Downloading conanfile.py Downloading conan_export.tgz s2n/1.3.9: Downloaded recipe revision 7c36397c29fb04ef82aeb7e72bec1393 aws-c-event-stream/0.2.7 (test package): Installing package Requirements aws-c-cal/0.5.13 from 'conan-center' - Downloaded aws-c-common/0.6.19 from 'conan-center' - Downloaded aws-c-event-stream/0.2.7 from local cache - Cache aws-c-io/0.10.20 from 'conan-center' - Downloaded aws-checksums/0.1.12 from 'conan-center' - Downloaded openssl/1.1.1n from 'conan-center' - Downloaded s2n/1.3.9 from 'conan-center' - Downloaded Packages aws-c-cal/0.5.13:c901f42a867f92496e157e12c734a8aa123cb930 - Download aws-c-common/0.6.19:cb995ddf84b389910e026c8bb3cd497a585ccf1a - Download aws-c-event-stream/0.2.7:bdc2e61a38330a26d4a412a5d86a8c52eea5fd07 - Download aws-c-io/0.10.20:176a538f6f496074dbbc7e24e8c3f0c278112342 - Download aws-checksums/0.1.12:34468bd34a4443a12a46113a95a9d96fffac06c4 - Download openssl/1.1.1n:cf142e38e022cf2a99aadebfd8f37ead3e935ad7 - Download s2n/1.3.9:ea546b5789c3d6dfe4d9f01adc662d42bf194848 - Download Installing (downloading, building) binaries... aws-c-common/0.6.19: Retrieving package cb995ddf84b389910e026c8bb3cd497a585ccf1a from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-common/0.6.19: Package installed cb995ddf84b389910e026c8bb3cd497a585ccf1a aws-c-common/0.6.19: Downloaded package revision 36594613f893ed6905d82d69cff9206d openssl/1.1.1n: Retrieving package cf142e38e022cf2a99aadebfd8f37ead3e935ad7 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz openssl/1.1.1n: Package installed cf142e38e022cf2a99aadebfd8f37ead3e935ad7 openssl/1.1.1n: Downloaded package revision b7a1e96d1eac01d2064eecc55b156d1d aws-c-cal/0.5.13: Retrieving package c901f42a867f92496e157e12c734a8aa123cb930 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-cal/0.5.13: Package installed c901f42a867f92496e157e12c734a8aa123cb930 aws-c-cal/0.5.13: Downloaded package revision 266305461e5683a8cd75c912877801c6 aws-checksums/0.1.12: Retrieving package 34468bd34a4443a12a46113a95a9d96fffac06c4 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-checksums/0.1.12: Package installed 34468bd34a4443a12a46113a95a9d96fffac06c4 aws-checksums/0.1.12: Downloaded package revision 0b8215ebe8560bffca10396579a97524 s2n/1.3.9: Retrieving package ea546b5789c3d6dfe4d9f01adc662d42bf194848 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz s2n/1.3.9: Package installed ea546b5789c3d6dfe4d9f01adc662d42bf194848 s2n/1.3.9: Downloaded package revision 33f5d876f11fbc911ca1e4bf58f7984e aws-c-io/0.10.20: Retrieving package 176a538f6f496074dbbc7e24e8c3f0c278112342 from remote 'conan-center' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-io/0.10.20: Package installed 176a538f6f496074dbbc7e24e8c3f0c278112342 aws-c-io/0.10.20: Downloaded package revision 4f722ca9b2cd7e293155edf9e6586e48 aws-c-event-stream/0.2.7: Retrieving package bdc2e61a38330a26d4a412a5d86a8c52eea5fd07 from remote 'c3i_PR-10018' Downloading conanmanifest.txt Downloading conaninfo.txt Downloading conan_package.tgz aws-c-event-stream/0.2.7: Package installed bdc2e61a38330a26d4a412a5d86a8c52eea5fd07 aws-c-event-stream/0.2.7: Downloaded package revision 16f80708295881d21e376392317bda28 aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-event-stream-config-version.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-event-streamTarget-release.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-event-streamTargets.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-event-stream-config.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-checksums-config-version.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-checksumsTarget-release.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-checksumsTargets.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-checksums-config.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-io-config-version.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-ioTarget-release.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-ioTargets.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-io-config.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-cal-config-version.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-calTarget-release.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-calTargets.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-cal-config.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created s2n-config-version.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created s2nTarget-release.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created s2nTargets.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created s2n-config.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-common-config-version.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-commonTarget-release.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-commonTargets.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created aws-c-common-config.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created OpenSSLConfigVersion.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created OpenSSLTarget-release.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created OpenSSLTargets.cmake aws-c-event-stream/0.2.7 (test package): Generator cmake_find_package_multi created OpenSSLConfig.cmake aws-c-event-stream/0.2.7 (test package): Generator txt created conanbuildinfo.txt aws-c-event-stream/0.2.7 (test package): Generator cmake created conanbuildinfo.cmake aws-c-event-stream/0.2.7 (test package): Aggregating env generators aws-c-event-stream/0.2.7 (test package): Generated conaninfo.txt aws-c-event-stream/0.2.7 (test package): Generated graphinfo Using lockfile: '/home/conan/w/prod/BuildSingleReference/conan-center-index/recipes/aws-c-event-stream/all/test_package/build/06ee4f65fa32a4d198bf0fd25d397d018e7dd057/conan.lock' Using cached profile from lockfile [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not found [HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK aws-c-event-stream/0.2.7 (test package): Calling build() ----Running------ > cd '/home/conan/w/prod/BuildSingleReference/conan-center-index/recipes/aws-c-event-stream/all/test_package/build/06ee4f65fa32a4d198bf0fd25d397d018e7dd057' && cmake -G "Unix Makefiles" -DCMAKE_BUILD_TYPE="Release" -DCONAN_IN_LOCAL_CACHE="OFF" -DCONAN_COMPILER="clang" -DCONAN_COMPILER_VERSION="12" -DCONAN_CXX_FLAGS="-m64" -DCONAN_SHARED_LINKER_FLAGS="-m64" -DCONAN_C_FLAGS="-m64" -DCONAN_LIBCXX="libstdc++" -DCMAKE_INSTALL_PREFIX="/home/conan/w/prod/BuildSingleReference/conan-center-index/recipes/aws-c-event-stream/all/test_package/build/06ee4f65fa32a4d198bf0fd25d397d018e7dd057/package" -DCMAKE_INSTALL_BINDIR="bin" -DCMAKE_INSTALL_SBINDIR="bin" -DCMAKE_INSTALL_LIBEXECDIR="bin" -DCMAKE_INSTALL_LIBDIR="lib" -DCMAKE_INSTALL_INCLUDEDIR="include" -DCMAKE_INSTALL_OLDINCLUDEDIR="include" -DCMAKE_INSTALL_DATAROOTDIR="share" -DCMAKE_PREFIX_PATH="/home/conan/w/prod/BuildSingleReference/conan-center-index/recipes/aws-c-event-stream/all/test_package/build/06ee4f65fa32a4d198bf0fd25d397d018e7dd057" -DCMAKE_MODULE_PATH="/home/conan/w/prod/BuildSingleReference/conan-center-index/recipes/aws-c-event-stream/all/test_package/build/06ee4f65fa32a4d198bf0fd25d397d018e7dd057" -DCMAKE_EXPORT_NO_PACKAGE_REGISTRY="ON" -DCONAN_EXPORTED="1" -Wno-dev '/home/conan/w/prod/BuildSingleReference/conan-center-index/recipes/aws-c-event-stream/all/test_package' ----------------- -- The C compiler identification is Clang 12.0.0 -- Check for working C compiler: /usr/local/bin/clang -- Check for working C compiler: /usr/local/bin/clang -- works -- Detecting C compiler ABI info -- Detecting C compiler ABI info - done -- Detecting C compile features -- Detecting C compile features - done -- Conan: called by CMake conan helper -- Conan: Adjusting output directories -- Conan: Using cmake targets configuration -- Library aws-c-event-stream found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-event-stream/0.2.7/_/_/package/bdc2e61a38330a26d4a412a5d86a8c52eea5fd07/lib/libaws-c-event-stream.so -- Library aws-checksums found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-checksums/0.1.12/_/_/package/34468bd34a4443a12a46113a95a9d96fffac06c4/lib/libaws-checksums.a -- Library aws-c-io found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-io/0.10.20/_/_/package/176a538f6f496074dbbc7e24e8c3f0c278112342/lib/libaws-c-io.a -- Library aws-c-cal found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-cal/0.5.13/_/_/package/c901f42a867f92496e157e12c734a8aa123cb930/lib/libaws-c-cal.a -- Library s2n found /home/conan/w/prod/BuildSingleReference/.conan/data/s2n/1.3.9/_/_/package/ea546b5789c3d6dfe4d9f01adc662d42bf194848/lib/libs2n.a -- Library aws-c-common found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-common/0.6.19/_/_/package/cb995ddf84b389910e026c8bb3cd497a585ccf1a/lib/libaws-c-common.a -- Library ssl found /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libssl.a -- Library crypto found /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libcrypto.a -- Conan: Adjusting default RPATHs Conan policies -- Conan: Adjusting language standard -- This project seems to be plain C, using 'Clang' compiler -- Conan: Compiler Clang>=8, checking major version 12 -- Conan: Checking correct version: 12 -- Conan: C++ stdlib: libstdc++ -- Library aws-c-event-stream found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-event-stream/0.2.7/_/_/package/bdc2e61a38330a26d4a412a5d86a8c52eea5fd07/lib/libaws-c-event-stream.so -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-event-stream/0.2.7/_/_/package/bdc2e61a38330a26d4a412a5d86a8c52eea5fd07/lib/libaws-c-event-stream.so -- Library aws-c-event-stream found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-event-stream/0.2.7/_/_/package/bdc2e61a38330a26d4a412a5d86a8c52eea5fd07/lib/libaws-c-event-stream.so -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-event-stream/0.2.7/_/_/package/bdc2e61a38330a26d4a412a5d86a8c52eea5fd07/lib/libaws-c-event-stream.so -- Library aws-c-common found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-common/0.6.19/_/_/package/cb995ddf84b389910e026c8bb3cd497a585ccf1a/lib/libaws-c-common.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-common/0.6.19/_/_/package/cb995ddf84b389910e026c8bb3cd497a585ccf1a/lib/libaws-c-common.a -- Library aws-c-common found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-common/0.6.19/_/_/package/cb995ddf84b389910e026c8bb3cd497a585ccf1a/lib/libaws-c-common.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-common/0.6.19/_/_/package/cb995ddf84b389910e026c8bb3cd497a585ccf1a/lib/libaws-c-common.a -- Library aws-checksums found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-checksums/0.1.12/_/_/package/34468bd34a4443a12a46113a95a9d96fffac06c4/lib/libaws-checksums.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-checksums/0.1.12/_/_/package/34468bd34a4443a12a46113a95a9d96fffac06c4/lib/libaws-checksums.a -- Library aws-checksums found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-checksums/0.1.12/_/_/package/34468bd34a4443a12a46113a95a9d96fffac06c4/lib/libaws-checksums.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-checksums/0.1.12/_/_/package/34468bd34a4443a12a46113a95a9d96fffac06c4/lib/libaws-checksums.a -- Dependency aws-c-common already found -- Library aws-c-io found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-io/0.10.20/_/_/package/176a538f6f496074dbbc7e24e8c3f0c278112342/lib/libaws-c-io.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-io/0.10.20/_/_/package/176a538f6f496074dbbc7e24e8c3f0c278112342/lib/libaws-c-io.a -- Library aws-c-io found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-io/0.10.20/_/_/package/176a538f6f496074dbbc7e24e8c3f0c278112342/lib/libaws-c-io.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-io/0.10.20/_/_/package/176a538f6f496074dbbc7e24e8c3f0c278112342/lib/libaws-c-io.a -- Library aws-c-cal found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-cal/0.5.13/_/_/package/c901f42a867f92496e157e12c734a8aa123cb930/lib/libaws-c-cal.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-cal/0.5.13/_/_/package/c901f42a867f92496e157e12c734a8aa123cb930/lib/libaws-c-cal.a -- Library aws-c-cal found /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-cal/0.5.13/_/_/package/c901f42a867f92496e157e12c734a8aa123cb930/lib/libaws-c-cal.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/aws-c-cal/0.5.13/_/_/package/c901f42a867f92496e157e12c734a8aa123cb930/lib/libaws-c-cal.a -- Dependency aws-c-common already found -- Library ssl found /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libssl.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libssl.a -- Library crypto found /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libcrypto.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libcrypto.a -- Library crypto found /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libcrypto.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libcrypto.a -- Library ssl found /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libssl.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/openssl/1.1.1n/_/_/package/cf142e38e022cf2a99aadebfd8f37ead3e935ad7/lib/libssl.a -- Dependency aws-c-common already found -- Library s2n found /home/conan/w/prod/BuildSingleReference/.conan/data/s2n/1.3.9/_/_/package/ea546b5789c3d6dfe4d9f01adc662d42bf194848/lib/libs2n.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/s2n/1.3.9/_/_/package/ea546b5789c3d6dfe4d9f01adc662d42bf194848/lib/libs2n.a -- Library s2n found /home/conan/w/prod/BuildSingleReference/.conan/data/s2n/1.3.9/_/_/package/ea546b5789c3d6dfe4d9f01adc662d42bf194848/lib/libs2n.a -- Found: /home/conan/w/prod/BuildSingleReference/.conan/data/s2n/1.3.9/_/_/package/ea546b5789c3d6dfe4d9f01adc662d42bf194848/lib/libs2n.a -- Dependency OpenSSL already found -- Configuring done -- Generating done -- Build files have been written to: /home/conan/w/prod/BuildSingleReference/conan-center-index/recipes/aws-c-event-stream/all/test_package/build/06ee4f65fa32a4d198bf0fd25d397d018e7dd057 ----Running------ > cmake --build '/home/conan/w/prod/BuildSingleReference/conan-center-index/recipes/aws-c-event-stream/all/test_package/build/06ee4f65fa32a4d198bf0fd25d397d018e7dd057' '--' '-j3' ----------------- Scanning dependencies of target test_package [ 50%] Building C object CMakeFiles/test_package.dir/test_package.c.o [100%] Linking C executable bin/test_package [100%] Built target test_package aws-c-event-stream/0.2.7 (test package): Running test() ----Running------ > bin/test_package ----------------- CMake Warning: Manually-specified variables were not used by the project: CMAKE_EXPORT_NO_PACKAGE_REGISTRY CMAKE_INSTALL_BINDIR CMAKE_INSTALL_DATAROOTDIR CMAKE_INSTALL_INCLUDEDIR CMAKE_INSTALL_LIBDIR CMAKE_INSTALL_LIBEXECDIR CMAKE_INSTALL_OLDINCLUDEDIR CMAKE_INSTALL_SBINDIR /home/conan/w/prod/BuildSingleReference/conan-center-index/recipes/aws-c-event-stream/all/test_package/test_package.c:30:53: warning: format specifies type 'unsigned int' but the argument has type 'size_t' (aka 'unsigned long') [-Wformat] fprintf(stderr, "Error at index %u!\n", i); ~~ ^ %zu 1 warning generated.