Dec 19 09:20:16.436 INFO checking schafer14/nn against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 09:20:16.436 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/schafer14/nn:/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 09:20:16.992 INFO [stdout] c140a311ef70963c793c7588b02647eb2fdc6b6da0b4b654d98b209bd0aa442d
Dec 19 09:20:17.000 INFO running `"docker" "start" "-a" "c140a311ef70963c793c7588b02647eb2fdc6b6da0b4b654d98b209bd0aa442d"`
Dec 19 09:20:18.368 INFO [stderr]     Checking libc v0.2.17
Dec 19 09:20:19.039 INFO [stderr]     Checking rand v0.3.14
Dec 19 09:20:20.281 INFO [stderr]     Checking nn v0.1.0 (/opt/crater/workdir)
Dec 19 09:20:20.770 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.46s
Dec 19 09:20:21.866 INFO running `"docker" "inspect" "c140a311ef70963c793c7588b02647eb2fdc6b6da0b4b654d98b209bd0aa442d"`
Dec 19 09:20:22.126 INFO running `"docker" "rm" "-f" "c140a311ef70963c793c7588b02647eb2fdc6b6da0b4b654d98b209bd0aa442d"`
Dec 19 09:20:22.428 INFO [stdout] c140a311ef70963c793c7588b02647eb2fdc6b6da0b4b654d98b209bd0aa442d