Dec 19 15:32:16.153 INFO checking jackwillis/rtttl against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 15:32:16.153 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/jackwillis/rtttl:/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 15:32:16.615 INFO [stdout] 5d057a86508e0e1a16a3fd70f9220e95c78aff5b8ec4ed4e11695fcb58189a62
Dec 19 15:32:16.618 INFO running `"docker" "start" "-a" "5d057a86508e0e1a16a3fd70f9220e95c78aff5b8ec4ed4e11695fcb58189a62"`
Dec 19 15:32:18.996 INFO [stderr]     Checking num-bigint v0.1.39
Dec 19 15:32:20.022 INFO [stderr]     Checking num-rational v0.1.38
Dec 19 15:32:20.586 INFO [stderr]     Checking rtttl v0.1.0 (/opt/crater/workdir)
Dec 19 15:32:21.416 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.47s
Dec 19 15:32:21.999 INFO running `"docker" "inspect" "5d057a86508e0e1a16a3fd70f9220e95c78aff5b8ec4ed4e11695fcb58189a62"`
Dec 19 15:32:22.321 INFO running `"docker" "rm" "-f" "5d057a86508e0e1a16a3fd70f9220e95c78aff5b8ec4ed4e11695fcb58189a62"`
Dec 19 15:32:22.580 INFO [stdout] 5d057a86508e0e1a16a3fd70f9220e95c78aff5b8ec4ed4e11695fcb58189a62