Dec 18 18:19:15.883 INFO checking background-jobs-core-0.3.1 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 18:19:15.884 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/background-jobs-core/0.3.1:/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 18:19:16.330 INFO [stdout] 3383f7e5f3fc90dfb40c1f244c477d2cc0560f45375e6aeea8f7686108e760f7
Dec 18 18:19:16.340 INFO running `"docker" "start" "-a" "3383f7e5f3fc90dfb40c1f244c477d2cc0560f45375e6aeea8f7686108e760f7"`
Dec 18 18:19:17.788 INFO [stderr]     Checking kv v0.7.0
Dec 18 18:19:19.021 INFO [stderr]     Checking background-jobs-core v0.3.1 (/opt/crater/workdir)
Dec 18 18:19:21.293 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.64s
Dec 18 18:19:21.890 INFO running `"docker" "inspect" "3383f7e5f3fc90dfb40c1f244c477d2cc0560f45375e6aeea8f7686108e760f7"`
Dec 18 18:19:22.038 INFO running `"docker" "rm" "-f" "3383f7e5f3fc90dfb40c1f244c477d2cc0560f45375e6aeea8f7686108e760f7"`
Dec 18 18:19:22.155 INFO [stdout] 3383f7e5f3fc90dfb40c1f244c477d2cc0560f45375e6aeea8f7686108e760f7