Dec 11 13:37:10.847 INFO checking mickjohn/red_or_black against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:37:10.847 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 13:37:11.245 INFO [stdout] b33a9b7bb8332e0924a9dd79ed11b0698a123690ef4e9f218789a00fff3cf3fe
Dec 11 13:37:11.252 INFO running `"docker" "start" "-a" "b33a9b7bb8332e0924a9dd79ed11b0698a123690ef4e9f218789a00fff3cf3fe"`
Dec 11 13:37:13.284 INFO [stderr] usermod: no changes
Dec 11 13:37:13.472 INFO [stderr]     Checking lazycell v1.1.0
Dec 11 13:37:13.652 INFO [stderr]     Checking mio v0.6.16
Dec 11 13:37:15.136 INFO [stderr]     Checking mio-extras v2.0.5
Dec 11 13:37:15.892 INFO [stderr]     Checking ws v0.7.8
Dec 11 13:37:18.092 INFO [stderr]     Checking websocket_red_or_black v0.1.0 (/source)
Dec 11 13:37:22.100 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.78s
Dec 11 13:37:22.108 INFO [stderr] su: No module specific data is present
Dec 11 13:37:22.898 INFO running `"docker" "inspect" "b33a9b7bb8332e0924a9dd79ed11b0698a123690ef4e9f218789a00fff3cf3fe"`
Dec 11 13:37:23.320 INFO running `"docker" "rm" "-f" "b33a9b7bb8332e0924a9dd79ed11b0698a123690ef4e9f218789a00fff3cf3fe"`
Dec 11 13:37:23.788 INFO [stdout] b33a9b7bb8332e0924a9dd79ed11b0698a123690ef4e9f218789a00fff3cf3fe