Dec 19 09:25:44.197 INFO checking sapphie132/sapphogram against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 09:25:44.197 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/sapphie132/sapphogram:/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 09:25:44.582 INFO [stdout] f4ae8451398b7bf66ad23325930f56dd9d9fc3cd4a93420a9846f13017d61fde
Dec 19 09:25:44.586 INFO running `"docker" "start" "-a" "f4ae8451398b7bf66ad23325930f56dd9d9fc3cd4a93420a9846f13017d61fde"`
Dec 19 09:25:45.768 INFO [stderr]    Compiling ring v0.13.2
Dec 19 09:25:45.768 INFO [stderr]     Checking mio v0.6.15
Dec 19 09:25:52.715 INFO [stderr]     Checking sapphogram v0.1.0 (/opt/crater/workdir)
Dec 19 09:25:54.036 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.33s
Dec 19 09:25:54.496 INFO running `"docker" "inspect" "f4ae8451398b7bf66ad23325930f56dd9d9fc3cd4a93420a9846f13017d61fde"`
Dec 19 09:25:54.768 INFO running `"docker" "rm" "-f" "f4ae8451398b7bf66ad23325930f56dd9d9fc3cd4a93420a9846f13017d61fde"`
Dec 19 09:25:55.041 INFO [stdout] f4ae8451398b7bf66ad23325930f56dd9d9fc3cd4a93420a9846f13017d61fde