Dec 19 09:01:42.763 INFO checking seven1m/gopher-in-rust against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 09:01:42.764 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/seven1m/gopher-in-rust:/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 09:01:43.316 INFO [stdout] 7755ba2a149056039782bbe255ad9bd3f9c63ee965c1d9149342c9709230af6d
Dec 19 09:01:43.324 INFO running `"docker" "start" "-a" "7755ba2a149056039782bbe255ad9bd3f9c63ee965c1d9149342c9709230af6d"`
Dec 19 09:01:45.288 INFO [stderr]     Checking thread_local v0.3.4
Dec 19 09:01:45.721 INFO [stderr]     Checking regex v0.2.2
Dec 19 09:01:47.956 INFO [stderr]     Checking gopher-in-rust v0.1.0 (/opt/crater/workdir)
Dec 19 09:01:48.652 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.53s
Dec 19 09:01:49.960 INFO running `"docker" "inspect" "7755ba2a149056039782bbe255ad9bd3f9c63ee965c1d9149342c9709230af6d"`
Dec 19 09:01:50.302 INFO running `"docker" "rm" "-f" "7755ba2a149056039782bbe255ad9bd3f9c63ee965c1d9149342c9709230af6d"`
Dec 19 09:01:50.540 INFO [stdout] 7755ba2a149056039782bbe255ad9bd3f9c63ee965c1d9149342c9709230af6d