Dec 19 14:41:29.077 INFO checking jzinedine/rust_playground against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:41:29.077 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/jzinedine/rust_playground:/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 14:41:29.561 INFO [stdout] 2bc140c5ef37d4c0a69cb078b6b0b26c1f52990f00fe03c571698ec978524ff3
Dec 19 14:41:29.563 INFO running `"docker" "start" "-a" "2bc140c5ef37d4c0a69cb078b6b0b26c1f52990f00fe03c571698ec978524ff3"`
Dec 19 14:41:31.651 INFO [stderr]     Checking hanoi_challenge v0.1.0 (/opt/crater/workdir)
Dec 19 14:41:32.096 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
Dec 19 14:41:33.154 INFO running `"docker" "inspect" "2bc140c5ef37d4c0a69cb078b6b0b26c1f52990f00fe03c571698ec978524ff3"`
Dec 19 14:41:33.488 INFO running `"docker" "rm" "-f" "2bc140c5ef37d4c0a69cb078b6b0b26c1f52990f00fe03c571698ec978524ff3"`
Dec 19 14:41:33.756 INFO [stdout] 2bc140c5ef37d4c0a69cb078b6b0b26c1f52990f00fe03c571698ec978524ff3