Dec 18 03:21:23.187 INFO checking bfeggans/rust_playground against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 03:21:23.187 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/bfeggans/rust_playground:/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 03:21:23.652 INFO [stdout] e7141ea7f1a325ee4bb3259ad4ff83a5600b079b4fdbab77b3ae76c7da10909b
Dec 18 03:21:23.656 INFO running `"docker" "start" "-a" "e7141ea7f1a325ee4bb3259ad4ff83a5600b079b4fdbab77b3ae76c7da10909b"`
Dec 18 03:21:25.528 INFO [stderr]     Checking phrases v0.1.0 (/opt/crater/workdir/Phrases)
Dec 18 03:21:25.767 INFO [stderr]     Checking rust_playground v0.1.0 (/opt/crater/workdir)
Dec 18 03:21:26.766 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
Dec 18 03:21:27.334 INFO running `"docker" "inspect" "e7141ea7f1a325ee4bb3259ad4ff83a5600b079b4fdbab77b3ae76c7da10909b"`
Dec 18 03:21:27.538 INFO running `"docker" "rm" "-f" "e7141ea7f1a325ee4bb3259ad4ff83a5600b079b4fdbab77b3ae76c7da10909b"`
Dec 18 03:21:27.881 INFO [stdout] e7141ea7f1a325ee4bb3259ad4ff83a5600b079b4fdbab77b3ae76c7da10909b