Dec 18 11:08:31.066 INFO checking slog-bunyan-2.1.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 11:08:31.066 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/slog-bunyan/2.1.0:/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 11:08:31.542 INFO [stdout] 2b7a91d60111f2c047fa45aaaaa7a052650c03a559e9bf7358b363b234d149df
Dec 18 11:08:31.543 INFO running `"docker" "start" "-a" "2b7a91d60111f2c047fa45aaaaa7a052650c03a559e9bf7358b363b234d149df"`
Dec 18 11:08:33.946 INFO [stderr]     Checking nix v0.8.1
Dec 18 11:08:33.946 INFO [stderr]     Checking chrono v0.4.6
Dec 18 11:08:36.909 INFO [stderr]     Checking slog-json v2.3.0
Dec 18 11:08:38.893 INFO [stderr]     Checking slog-bunyan v2.1.0 (/opt/crater/workdir)
Dec 18 11:08:39.560 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.71s
Dec 18 11:08:39.993 INFO running `"docker" "inspect" "2b7a91d60111f2c047fa45aaaaa7a052650c03a559e9bf7358b363b234d149df"`
Dec 18 11:08:40.296 INFO running `"docker" "rm" "-f" "2b7a91d60111f2c047fa45aaaaa7a052650c03a559e9bf7358b363b234d149df"`
Dec 18 11:08:40.546 INFO [stdout] 2b7a91d60111f2c047fa45aaaaa7a052650c03a559e9bf7358b363b234d149df