Dec 19 05:31:53.749 INFO checking willemv/rust-mastermind against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 05:31:53.749 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/willemv/rust-mastermind:/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 05:31:54.022 INFO [stdout] e98910d830c17e7703ea8b1b3f40dce430875cc981d338f26c27e0a6862c32b8
Dec 19 05:31:54.028 INFO running `"docker" "start" "-a" "e98910d830c17e7703ea8b1b3f40dce430875cc981d338f26c27e0a6862c32b8"`
Dec 19 05:31:54.819 INFO [stderr]     Checking term v0.4.5
Dec 19 05:31:54.819 INFO [stderr]     Checking rand v0.3.15
Dec 19 05:31:55.908 INFO [stderr]     Checking rust-mastermind v0.1.0 (/opt/crater/workdir)
Dec 19 05:31:56.169 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
Dec 19 05:31:56.518 INFO running `"docker" "inspect" "e98910d830c17e7703ea8b1b3f40dce430875cc981d338f26c27e0a6862c32b8"`
Dec 19 05:31:56.666 INFO running `"docker" "rm" "-f" "e98910d830c17e7703ea8b1b3f40dce430875cc981d338f26c27e0a6862c32b8"`
Dec 19 05:31:56.840 INFO [stdout] e98910d830c17e7703ea8b1b3f40dce430875cc981d338f26c27e0a6862c32b8