Dec 18 03:21:21.698 INFO checking bfeggans/rust_playground against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 03:21:21.698 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:21:22.040 INFO [stdout] 1bf38893b3486156f977554274d9bb9914736959c430b2fbc6c4e89b5d9ae0ca
Dec 18 03:21:22.046 INFO running `"docker" "start" "-a" "1bf38893b3486156f977554274d9bb9914736959c430b2fbc6c4e89b5d9ae0ca"`
Dec 18 03:21:23.736 INFO [stderr]     Checking phrases v0.1.0 (/opt/crater/workdir/Phrases)
Dec 18 03:21:24.049 INFO [stderr]     Checking rust_playground v0.1.0 (/opt/crater/workdir)
Dec 18 03:21:25.080 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
Dec 18 03:21:25.816 INFO running `"docker" "inspect" "1bf38893b3486156f977554274d9bb9914736959c430b2fbc6c4e89b5d9ae0ca"`
Dec 18 03:21:26.084 INFO running `"docker" "rm" "-f" "1bf38893b3486156f977554274d9bb9914736959c430b2fbc6c4e89b5d9ae0ca"`
Dec 18 03:21:26.359 INFO [stdout] 1bf38893b3486156f977554274d9bb9914736959c430b2fbc6c4e89b5d9ae0ca