[INFO] updating cached repository danielpclark/bench_ruby_ffi_example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/danielpclark/bench_ruby_ffi_example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/danielpclark/bench_ruby_ffi_example" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/danielpclark/bench_ruby_ffi_example"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/danielpclark/bench_ruby_ffi_example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/danielpclark/bench_ruby_ffi_example" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/danielpclark/bench_ruby_ffi_example"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/danielpclark/bench_ruby_ffi_example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2f8fae8311f8d69695d428e538201c98ba2c67c2
[INFO] sha for GitHub repo danielpclark/bench_ruby_ffi_example: 2f8fae8311f8d69695d428e538201c98ba2c67c2
[INFO] validating manifest of danielpclark/bench_ruby_ffi_example on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of danielpclark/bench_ruby_ffi_example on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing danielpclark/bench_ruby_ffi_example
[INFO] finished frobbing danielpclark/bench_ruby_ffi_example
[INFO] frobbed toml for danielpclark/bench_ruby_ffi_example written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/danielpclark/bench_ruby_ffi_example/Cargo.toml
[INFO] started frobbing danielpclark/bench_ruby_ffi_example
[INFO] finished frobbing danielpclark/bench_ruby_ffi_example
[INFO] frobbed toml for danielpclark/bench_ruby_ffi_example written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/danielpclark/bench_ruby_ffi_example/Cargo.toml
[INFO] crate danielpclark/bench_ruby_ffi_example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking danielpclark/bench_ruby_ffi_example against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-2/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/danielpclark/bench_ruby_ffi_example:/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=forbid" "-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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 650d47df809ea37f6e0eab395e7b30d0bc75fde52f9fd9459933150261b937cd
[INFO] running `"docker" "start" "-a" "650d47df809ea37f6e0eab395e7b30d0bc75fde52f9fd9459933150261b937cd"`
[INFO] [stderr]    Compiling ruby-sys v0.2.20
[INFO] [stderr]     Checking array_tool v0.4.1
[INFO] [stderr]     Checking ruru v0.9.3
[INFO] [stderr]     Checking ffi_example v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `self::array_tool::string::Squeeze`
[INFO] [stderr]   --> src/lib.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr] 11 |   use self::array_tool::string::Squeeze;
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::array_tool::string::Squeeze`
[INFO] [stderr]   --> src/lib.rs:11:7
[INFO] [stderr]    |
[INFO] [stderr] 11 |   use self::array_tool::string::Squeeze;
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `"docker" "inspect" "650d47df809ea37f6e0eab395e7b30d0bc75fde52f9fd9459933150261b937cd"`
[INFO] running `"docker" "rm" "-f" "650d47df809ea37f6e0eab395e7b30d0bc75fde52f9fd9459933150261b937cd"`
[INFO] [stdout] 650d47df809ea37f6e0eab395e7b30d0bc75fde52f9fd9459933150261b937cd