Dec 18 09:58:43.012 INFO checking try-mutex-0.1.1 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 09:58:43.013 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/try-mutex/0.1.1:/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 09:58:43.214 INFO [stdout] e9846c0b9feda689c3183c772b3e2e3f6ad22ee9be646b6f5510f20af6ab870d
Dec 18 09:58:43.216 INFO running `"docker" "start" "-a" "e9846c0b9feda689c3183c772b3e2e3f6ad22ee9be646b6f5510f20af6ab870d"`
Dec 18 09:58:43.905 INFO [stderr]    Compiling compiletest_rs v0.3.17
Dec 18 09:58:43.905 INFO [stderr]     Checking try-mutex v0.1.1 (/opt/crater/workdir)
Dec 18 09:58:43.905 INFO [stderr]     Checking tester v0.5.0
Dec 18 09:58:48.288 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.55s
Dec 18 09:58:48.852 INFO running `"docker" "inspect" "e9846c0b9feda689c3183c772b3e2e3f6ad22ee9be646b6f5510f20af6ab870d"`
Dec 18 09:58:49.050 INFO running `"docker" "rm" "-f" "e9846c0b9feda689c3183c772b3e2e3f6ad22ee9be646b6f5510f20af6ab870d"`
Dec 18 09:58:49.336 INFO [stdout] e9846c0b9feda689c3183c772b3e2e3f6ad22ee9be646b6f5510f20af6ab870d