Dec 19 20:40:21.491 INFO checking alexpdp7/rustmine against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 20:40:21.491 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/alexpdp7/rustmine:/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 20:40:22.018 INFO [stdout] a8f97215098f61028d30ee5f3e83bfb11fe4ae27fc01114b1b85db31e4c4e605
Dec 19 20:40:22.022 INFO running `"docker" "start" "-a" "a8f97215098f61028d30ee5f3e83bfb11fe4ae27fc01114b1b85db31e4c4e605"`
Dec 19 20:40:24.487 INFO [stderr]     Checking libc v0.2.15
Dec 19 20:40:25.277 INFO [stderr]     Checking rand v0.3.14
Dec 19 20:40:26.493 INFO [stderr]     Checking rustmine v0.1.0 (/opt/crater/workdir)
Dec 19 20:40:26.983 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.52s
Dec 19 20:40:27.634 INFO running `"docker" "inspect" "a8f97215098f61028d30ee5f3e83bfb11fe4ae27fc01114b1b85db31e4c4e605"`
Dec 19 20:40:27.922 INFO running `"docker" "rm" "-f" "a8f97215098f61028d30ee5f3e83bfb11fe4ae27fc01114b1b85db31e4c4e605"`
Dec 19 20:40:28.168 INFO [stdout] a8f97215098f61028d30ee5f3e83bfb11fe4ae27fc01114b1b85db31e4c4e605