Dec 19 09:38:58.498 INFO checking ruuda/filebuffer against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 09:38:58.498 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-6/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/ruuda/filebuffer:/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 09:38:58.738 INFO [stdout] 6fbbc6c90245eb20185b6c3345b3e13face0ddfbf05f5484884c602b83a62ff5
Dec 19 09:38:58.742 INFO running `"docker" "start" "-a" "6fbbc6c90245eb20185b6c3345b3e13face0ddfbf05f5484884c602b83a62ff5"`
Dec 19 09:38:59.484 INFO [stderr]    Compiling gcc v0.3.35
Dec 19 09:38:59.492 INFO [stderr]     Checking filebuffer v0.4.0 (/opt/crater/workdir)
Dec 19 09:38:59.496 INFO [stderr]     Checking time v0.1.35
Dec 19 09:39:01.738 INFO [stderr]    Compiling rust-crypto v0.2.36
Dec 19 09:39:08.021 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.60s
Dec 19 09:39:08.770 INFO running `"docker" "inspect" "6fbbc6c90245eb20185b6c3345b3e13face0ddfbf05f5484884c602b83a62ff5"`
Dec 19 09:39:09.018 INFO running `"docker" "rm" "-f" "6fbbc6c90245eb20185b6c3345b3e13face0ddfbf05f5484884c602b83a62ff5"`
Dec 19 09:39:09.364 INFO [stdout] 6fbbc6c90245eb20185b6c3345b3e13face0ddfbf05f5484884c602b83a62ff5