[INFO] updating cached repository segfo/rust_c_ffi_sample
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/segfo/rust_c_ffi_sample
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/segfo/rust_c_ffi_sample" "work/ex/beta-1.37-6/sources/1.36.0/gh/segfo/rust_c_ffi_sample"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/segfo/rust_c_ffi_sample'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/segfo/rust_c_ffi_sample" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/segfo/rust_c_ffi_sample"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/segfo/rust_c_ffi_sample'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bf59224db56640a2f9e46880dfc2c833dcb023f6
[INFO] sha for GitHub repo segfo/rust_c_ffi_sample: bf59224db56640a2f9e46880dfc2c833dcb023f6
[INFO] validating manifest of segfo/rust_c_ffi_sample on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of segfo/rust_c_ffi_sample on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing segfo/rust_c_ffi_sample
[INFO] finished frobbing segfo/rust_c_ffi_sample
[INFO] frobbed toml for segfo/rust_c_ffi_sample written to work/ex/beta-1.37-6/sources/1.36.0/gh/segfo/rust_c_ffi_sample/Cargo.toml
[INFO] started frobbing segfo/rust_c_ffi_sample
[INFO] finished frobbing segfo/rust_c_ffi_sample
[INFO] frobbed toml for segfo/rust_c_ffi_sample written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/segfo/rust_c_ffi_sample/Cargo.toml
[INFO] crate segfo/rust_c_ffi_sample already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing segfo/rust_c_ffi_sample against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/segfo/rust_c_ffi_sample:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 6bf619b37f657027e26814cad3bd1ea831b565625fdf291667ca3e47e88dc2dc
[INFO] running `"docker" "start" "-a" "6bf619b37f657027e26814cad3bd1ea831b565625fdf291667ca3e47e88dc2dc"`
[INFO] [stderr]    Compiling c_wrapper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `"docker" "inspect" "6bf619b37f657027e26814cad3bd1ea831b565625fdf291667ca3e47e88dc2dc"`
[INFO] running `"docker" "rm" "-f" "6bf619b37f657027e26814cad3bd1ea831b565625fdf291667ca3e47e88dc2dc"`
[INFO] [stdout] 6bf619b37f657027e26814cad3bd1ea831b565625fdf291667ca3e47e88dc2dc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/segfo/rust_c_ffi_sample:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8ba812cbea0d69747c9e81fa089007dd239290a4a4f5a8b0d6d4b489a1877741
[INFO] running `"docker" "start" "-a" "8ba812cbea0d69747c9e81fa089007dd239290a4a4f5a8b0d6d4b489a1877741"`
[INFO] [stderr]    Compiling c_wrapper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "8ba812cbea0d69747c9e81fa089007dd239290a4a4f5a8b0d6d4b489a1877741"`
[INFO] running `"docker" "rm" "-f" "8ba812cbea0d69747c9e81fa089007dd239290a4a4f5a8b0d6d4b489a1877741"`
[INFO] [stdout] 8ba812cbea0d69747c9e81fa089007dd239290a4a4f5a8b0d6d4b489a1877741
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/segfo/rust_c_ffi_sample:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 469d91b8836a8274bc5031a7d7693c22a6ca327cde6da142dc1b3e4616bc26a3
[INFO] running `"docker" "start" "-a" "469d91b8836a8274bc5031a7d7693c22a6ca327cde6da142dc1b3e4616bc26a3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c_wrapper-f68f04da8be77304
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "469d91b8836a8274bc5031a7d7693c22a6ca327cde6da142dc1b3e4616bc26a3"`
[INFO] running `"docker" "rm" "-f" "469d91b8836a8274bc5031a7d7693c22a6ca327cde6da142dc1b3e4616bc26a3"`
[INFO] [stdout] 469d91b8836a8274bc5031a7d7693c22a6ca327cde6da142dc1b3e4616bc26a3