[INFO] updating cached repository https://github.com/ekuinox/rust-ffi-sample
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0b1e709fe00385fe3ba1a7475103d4c37e119c50
[INFO] checking ekuinox/rust-ffi-sample against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fekuinox%2Frust-ffi-sample" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ekuinox/rust-ffi-sample on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ekuinox/rust-ffi-sample
[INFO] finished tweaking git repo https://github.com/ekuinox/rust-ffi-sample
[INFO] tweaked toml for git repo https://github.com/ekuinox/rust-ffi-sample written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ekuinox/rust-ffi-sample already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 53b70ece8cb4e3c9dbea067b2edb06a8694e55d305d6139b051be39fda164c57
[INFO] running `"docker" "start" "-a" "53b70ece8cb4e3c9dbea067b2edb06a8694e55d305d6139b051be39fda164c57"`
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling rayon v1.1.0
[INFO] [stderr]    Compiling cc v1.0.38
[INFO] [stderr]    Compiling rust-ffi-sample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: Using built-in specs.
[INFO] [stderr] warning: COLLECT_GCC=c++
[INFO] [stderr] warning: Target: x86_64-linux-gnu
[INFO] [stderr] warning: Configured with: ../src/configure -v --with-pkgversion='Debian 6.3.0-18+deb9u1' --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-6 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
[INFO] [stderr] warning: Thread model: posix
[INFO] [stderr] warning: gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)
[INFO] [stderr] warning: COLLECT_GCC_OPTIONS='-O0' '-ffunction-sections' '-fdata-sections' '-fPIC' '-g' '-fno-omit-frame-pointer' '-m64' '-std=c++1z' '-Wall' '-Wextra' '-v' '-g' '-o' '/opt/rustwide/target/debug/build/rust-ffi-sample-b03b527d49043d3d/out/src/c++/foo.o' '-c' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
[INFO] [stderr] warning:  /usr/lib/gcc/x86_64-linux-gnu/6/cc1plus -quiet -v -imultiarch x86_64-linux-gnu -D_GNU_SOURCE src/c++/foo.cpp -quiet -dumpbase foo.cpp -m64 -mtune=generic -march=x86-64 -auxbase-strip /opt/rustwide/target/debug/build/rust-ffi-sample-b03b527d49043d3d/out/src/c++/foo.o -g -g -O0 -Wall -Wextra -std=c++1z -version -ffunction-sections -fdata-sections -fPIC -fno-omit-frame-pointer -o /tmp/ccUBWJSE.s
[INFO] [stderr] warning: GNU C++14 (Debian 6.3.0-18+deb9u1) version 6.3.0 20170516 (x86_64-linux-gnu)
[INFO] [stderr] warning: 	compiled by GNU C version 6.3.0 20170516, GMP version 6.1.2, MPFR version 3.1.5, MPC version 1.0.3, isl version 0.15
[INFO] [stderr] warning: GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
[INFO] [stderr] warning: ignoring duplicate directory "/usr/include/x86_64-linux-gnu/c++/6"
[INFO] [stderr] warning: ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
[INFO] [stderr] warning: ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/6/../../../../x86_64-linux-gnu/include"
[INFO] [stderr] warning: #include "..." search starts here:
[INFO] [stderr] warning: #include <...> search starts here:
[INFO] [stderr] warning:  /usr/include/c++/6
[INFO] [stderr] warning:  /usr/include/x86_64-linux-gnu/c++/6
[INFO] [stderr] warning:  /usr/include/c++/6/backward
[INFO] [stderr] warning:  /usr/lib/gcc/x86_64-linux-gnu/6/include
[INFO] [stderr] warning:  /usr/local/include
[INFO] [stderr] warning:  /usr/lib/gcc/x86_64-linux-gnu/6/include-fixed
[INFO] [stderr] warning:  /usr/include/x86_64-linux-gnu
[INFO] [stderr] warning:  /usr/include
[INFO] [stderr] warning: End of search list.
[INFO] [stderr] warning: GNU C++14 (Debian 6.3.0-18+deb9u1) version 6.3.0 20170516 (x86_64-linux-gnu)
[INFO] [stderr] warning: 	compiled by GNU C version 6.3.0 20170516, GMP version 6.1.2, MPFR version 3.1.5, MPC version 1.0.3, isl version 0.15
[INFO] [stderr] warning: GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
[INFO] [stderr] warning: Compiler executable checksum: 9d922bffefb5a33c8f2905f4ce829a36
[INFO] [stderr] warning: COLLECT_GCC_OPTIONS='-O0' '-ffunction-sections' '-fdata-sections' '-fPIC' '-g' '-fno-omit-frame-pointer' '-m64' '-std=c++1z' '-Wall' '-Wextra' '-v' '-g' '-o' '/opt/rustwide/target/debug/build/rust-ffi-sample-b03b527d49043d3d/out/src/c++/foo.o' '-c' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
[INFO] [stderr] warning:  as -v --64 -o /opt/rustwide/target/debug/build/rust-ffi-sample-b03b527d49043d3d/out/src/c++/foo.o /tmp/ccUBWJSE.s
[INFO] [stderr] warning: GNU assembler version 2.28 (x86_64-linux-gnu) using BFD version (GNU Binutils for Debian) 2.28
[INFO] [stderr] warning: COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/6/:/usr/lib/gcc/x86_64-linux-gnu/6/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/6/:/usr/lib/gcc/x86_64-linux-gnu/
[INFO] [stderr] warning: LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/6/:/usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/6/../../../../lib/:/lib/x86_64-linux-gnu/:/lib/../lib/:/usr/lib/x86_64-linux-gnu/:/usr/lib/../lib/:/usr/lib/gcc/x86_64-linux-gnu/6/../../../:/lib/:/usr/lib/
[INFO] [stderr] warning: COLLECT_GCC_OPTIONS='-O0' '-ffunction-sections' '-fdata-sections' '-fPIC' '-g' '-fno-omit-frame-pointer' '-m64' '-std=c++1z' '-Wall' '-Wextra' '-v' '-g' '-o' '/opt/rustwide/target/debug/build/rust-ffi-sample-b03b527d49043d3d/out/src/c++/foo.o' '-c' '-shared-libgcc' '-mtune=generic' '-march=x86-64'
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.31s
[INFO] running `"docker" "inspect" "53b70ece8cb4e3c9dbea067b2edb06a8694e55d305d6139b051be39fda164c57"`
[INFO] running `"docker" "rm" "-f" "53b70ece8cb4e3c9dbea067b2edb06a8694e55d305d6139b051be39fda164c57"`
[INFO] [stdout] 53b70ece8cb4e3c9dbea067b2edb06a8694e55d305d6139b051be39fda164c57