Dec 18 06:01:36.968 INFO checking PRust-Projects/connect-four against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 06:01:36.968 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/PRust-Projects/connect-four:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 06:01:37.344 INFO [stdout] 468d0f0a1484985ac26c61cab6de784e733d630a20006330220bd00a7c5207f7
Dec 18 06:01:37.348 INFO running `"docker" "start" "-a" "468d0f0a1484985ac26c61cab6de784e733d630a20006330220bd00a7c5207f7"`
Dec 18 06:01:38.893 INFO [stderr]     Checking userio v0.1.0 (/opt/crater/workdir/userio)
Dec 18 06:01:39.596 INFO [stderr]     Checking connect-four v0.1.0 (/opt/crater/workdir)
Dec 18 06:01:40.892 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.13s
Dec 18 06:01:41.686 INFO running `"docker" "inspect" "468d0f0a1484985ac26c61cab6de784e733d630a20006330220bd00a7c5207f7"`
Dec 18 06:01:41.962 INFO running `"docker" "rm" "-f" "468d0f0a1484985ac26c61cab6de784e733d630a20006330220bd00a7c5207f7"`
Dec 18 06:01:42.265 INFO [stdout] 468d0f0a1484985ac26c61cab6de784e733d630a20006330220bd00a7c5207f7