Dec 19 18:25:18.249 INFO checking danielpclark/bench_ruby_ffi_example against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 18:25:18.249 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 18:25:18.595 INFO [stdout] 59a8753aa5ff67f08ebec30d631b98ea2e729cc301da9d63c4d6f65fc0ddb90d
Dec 19 18:25:18.598 INFO running `"docker" "start" "-a" "59a8753aa5ff67f08ebec30d631b98ea2e729cc301da9d63c4d6f65fc0ddb90d"`
Dec 19 18:25:20.320 INFO [stderr]     Checking array_tool v0.4.1
Dec 19 18:25:20.320 INFO [stderr]     Checking ruby-sys v0.2.20
Dec 19 18:25:20.784 INFO [stderr]     Checking ruru v0.9.3
Dec 19 18:25:21.608 INFO [stderr]     Checking ffi_example v0.0.1 (/opt/crater/workdir)
Dec 19 18:25:21.924 INFO [stderr] warning: unused import: `self::array_tool::string::Squeeze`
Dec 19 18:25:21.924 INFO [stderr]   --> src/lib.rs:11:7
Dec 19 18:25:21.924 INFO [stderr]    |
Dec 19 18:25:21.924 INFO [stderr] 11 |   use self::array_tool::string::Squeeze;
Dec 19 18:25:21.924 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:25:21.924 INFO [stderr]    |
Dec 19 18:25:21.924 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 18:25:21.924 INFO [stderr] 
Dec 19 18:25:21.932 INFO [stderr] warning: unused import: `self::array_tool::string::Squeeze`
Dec 19 18:25:21.932 INFO [stderr]   --> src/lib.rs:11:7
Dec 19 18:25:21.932 INFO [stderr]    |
Dec 19 18:25:21.932 INFO [stderr] 11 |   use self::array_tool::string::Squeeze;
Dec 19 18:25:21.932 INFO [stderr]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 18:25:21.932 INFO [stderr]    |
Dec 19 18:25:21.932 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 18:25:21.932 INFO [stderr] 
Dec 19 18:25:22.125 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.88s
Dec 19 18:25:23.233 INFO running `"docker" "inspect" "59a8753aa5ff67f08ebec30d631b98ea2e729cc301da9d63c4d6f65fc0ddb90d"`
Dec 19 18:25:23.644 INFO running `"docker" "rm" "-f" "59a8753aa5ff67f08ebec30d631b98ea2e729cc301da9d63c4d6f65fc0ddb90d"`
Dec 19 18:25:23.984 INFO [stdout] 59a8753aa5ff67f08ebec30d631b98ea2e729cc301da9d63c4d6f65fc0ddb90d