Dec 17 20:58:05.044 INFO checking la10736/rust_thread_concurrent against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 20:58:05.044 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/la10736/rust_thread_concurrent:/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 17 20:58:05.474 INFO [stdout] aa2b7eb361b5fcbba80b1e5d35a69c43d15aeb7fa805ad7a1c4d8fefcaf3635d
Dec 17 20:58:05.474 INFO running `"docker" "start" "-a" "aa2b7eb361b5fcbba80b1e5d35a69c43d15aeb7fa805ad7a1c4d8fefcaf3635d"`
Dec 17 20:58:06.640 INFO [stderr]     Checking concurrent2 v0.1.0 (/opt/crater/workdir)
Dec 17 20:58:07.056 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
Dec 17 20:58:07.396 INFO running `"docker" "inspect" "aa2b7eb361b5fcbba80b1e5d35a69c43d15aeb7fa805ad7a1c4d8fefcaf3635d"`
Dec 17 20:58:07.494 INFO running `"docker" "rm" "-f" "aa2b7eb361b5fcbba80b1e5d35a69c43d15aeb7fa805ad7a1c4d8fefcaf3635d"`
Dec 17 20:58:07.604 INFO [stdout] aa2b7eb361b5fcbba80b1e5d35a69c43d15aeb7fa805ad7a1c4d8fefcaf3635d