Dec 18 18:19:13.951 INFO checking background-jobs-core-0.3.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 18:19:13.951 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/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 18:19:14.524 INFO [stdout] d9b1c0278574e970882739a038022deb01b49fa0792569678a9051e0f0d7ccae
Dec 18 18:19:14.529 INFO running `"docker" "start" "-a" "d9b1c0278574e970882739a038022deb01b49fa0792569678a9051e0f0d7ccae"`
Dec 18 18:19:15.800 INFO [stderr]     Checking lmdb v0.8.0
Dec 18 18:19:16.614 INFO [stderr]     Checking kv v0.7.0
Dec 18 18:19:17.848 INFO [stderr]     Checking background-jobs-core v0.3.1 (/opt/crater/workdir)
Dec 18 18:19:20.173 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.54s
Dec 18 18:19:21.320 INFO running `"docker" "inspect" "d9b1c0278574e970882739a038022deb01b49fa0792569678a9051e0f0d7ccae"`
Dec 18 18:19:21.540 INFO running `"docker" "rm" "-f" "d9b1c0278574e970882739a038022deb01b49fa0792569678a9051e0f0d7ccae"`
Dec 18 18:19:21.714 INFO [stdout] d9b1c0278574e970882739a038022deb01b49fa0792569678a9051e0f0d7ccae