Dec 18 02:11:46.401 INFO checking cortesoft/RustFour against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 02:11:46.401 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/cortesoft/RustFour:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 02:11:46.711 INFO [stdout] ead6b8aaa16061cbff9146bee1543f1f12f7a7f69535eefd1bf50b50e6fde984
Dec 18 02:11:46.716 INFO running `"docker" "start" "-a" "ead6b8aaa16061cbff9146bee1543f1f12f7a7f69535eefd1bf50b50e6fde984"`
Dec 18 02:11:48.104 INFO [stderr]    Compiling redis v0.8.0
Dec 18 02:11:51.532 INFO [stderr]     Checking connect_four_engine v0.1.0 (/opt/crater/workdir/connect_four_engine)
Dec 18 02:11:52.772 INFO [stderr]     Checking connect_four v0.1.0 (/opt/crater/workdir)
Dec 18 02:11:53.331 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.34s
Dec 18 02:11:54.109 INFO running `"docker" "inspect" "ead6b8aaa16061cbff9146bee1543f1f12f7a7f69535eefd1bf50b50e6fde984"`
Dec 18 02:11:54.386 INFO running `"docker" "rm" "-f" "ead6b8aaa16061cbff9146bee1543f1f12f7a7f69535eefd1bf50b50e6fde984"`
Dec 18 02:11:54.773 INFO [stdout] ead6b8aaa16061cbff9146bee1543f1f12f7a7f69535eefd1bf50b50e6fde984