Dec 19 11:13:52.657 INFO checking passcod/catflap against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 11:13:52.657 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/passcod/catflap:/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 11:13:53.471 INFO [stdout] 7877701e213e212925ed5e869e7d6d5752e4dab3a48daa1ac897d88e1c1f989f
Dec 19 11:13:53.473 INFO running `"docker" "start" "-a" "7877701e213e212925ed5e869e7d6d5752e4dab3a48daa1ac897d88e1c1f989f"`
Dec 19 11:13:56.241 INFO [stderr]     Checking nix v0.8.1
Dec 19 11:13:56.241 INFO [stderr]     Checking clap v2.24.1
Dec 19 11:14:04.395 INFO [stderr]     Checking catflap v1.1.0 (/opt/crater/workdir)
Dec 19 11:14:05.060 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.07s
Dec 19 11:14:05.738 INFO running `"docker" "inspect" "7877701e213e212925ed5e869e7d6d5752e4dab3a48daa1ac897d88e1c1f989f"`
Dec 19 11:14:06.126 INFO running `"docker" "rm" "-f" "7877701e213e212925ed5e869e7d6d5752e4dab3a48daa1ac897d88e1c1f989f"`
Dec 19 11:14:06.428 INFO [stdout] 7877701e213e212925ed5e869e7d6d5752e4dab3a48daa1ac897d88e1c1f989f