Dec 17 15:58:48.941 INFO checking scooter-dangle/compatible-enum-serializations against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 15:58:48.942 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/scooter-dangle/compatible-enum-serializations:/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 17 15:58:49.312 INFO [stdout] 2ed013f00aa397b83b0fb664b1c40f7557be436d381ee213650d31640d4f6290
Dec 17 15:58:49.314 INFO running `"docker" "start" "-a" "2ed013f00aa397b83b0fb664b1c40f7557be436d381ee213650d31640d4f6290"`
Dec 17 15:58:50.021 INFO [stderr]     Checking serde v1.0.17
Dec 17 15:58:50.047 INFO [stderr]    Compiling serde_derive v1.0.17
Dec 17 15:58:58.842 INFO [stderr]     Checking bincode v0.9.2
Dec 17 15:58:59.504 INFO [stderr]     Checking compatible-enums v0.1.0 (/opt/crater/workdir)
Dec 17 15:59:00.155 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.18s
Dec 17 15:59:00.756 INFO running `"docker" "inspect" "2ed013f00aa397b83b0fb664b1c40f7557be436d381ee213650d31640d4f6290"`
Dec 17 15:59:01.120 INFO running `"docker" "rm" "-f" "2ed013f00aa397b83b0fb664b1c40f7557be436d381ee213650d31640d4f6290"`
Dec 17 15:59:01.515 INFO [stdout] 2ed013f00aa397b83b0fb664b1c40f7557be436d381ee213650d31640d4f6290