Dec 19 18:45:10.197 INFO checking cpearce/arm-rs against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 18:45:10.197 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/cpearce/arm-rs:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 18:45:10.928 INFO [stdout] e47c16b03bf0d84e3e0980e71875c8f1eb6812b762107da746f2b1ae4bcc89e9
Dec 19 18:45:10.930 INFO running `"docker" "start" "-a" "e47c16b03bf0d84e3e0980e71875c8f1eb6812b762107da746f2b1ae4bcc89e9"`
Dec 19 18:45:13.445 INFO [stderr]     Checking itertools v0.6.1
Dec 19 18:45:13.449 INFO [stderr]     Checking rayon-core v1.2.1
Dec 19 18:45:14.757 INFO [stderr]     Checking rayon v0.8.2
Dec 19 18:45:18.258 INFO [stderr]     Checking arm v0.1.0 (/opt/crater/workdir)
Dec 19 18:45:20.117 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.76s
Dec 19 18:45:20.894 INFO running `"docker" "inspect" "e47c16b03bf0d84e3e0980e71875c8f1eb6812b762107da746f2b1ae4bcc89e9"`
Dec 19 18:45:21.214 INFO running `"docker" "rm" "-f" "e47c16b03bf0d84e3e0980e71875c8f1eb6812b762107da746f2b1ae4bcc89e9"`
Dec 19 18:45:21.556 INFO [stdout] e47c16b03bf0d84e3e0980e71875c8f1eb6812b762107da746f2b1ae4bcc89e9