Dec 19 14:11:31.558 INFO checking kojole/benchmark-concurrent-io against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:11:31.559 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/kojole/benchmark-concurrent-io:/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 14:11:31.790 INFO [stdout] ad605dfb7f8063c58982f78298b6babd4415d8ce80e5c3bfdd52fe0f5d4a7da9
Dec 19 14:11:31.798 INFO running `"docker" "start" "-a" "ad605dfb7f8063c58982f78298b6babd4415d8ce80e5c3bfdd52fe0f5d4a7da9"`
Dec 19 14:11:32.806 INFO [stderr]     Checking docopt v1.0.0
Dec 19 14:11:34.038 INFO [stderr]     Checking conio v0.1.0 (/opt/crater/workdir)
Dec 19 14:11:35.159 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.40s
Dec 19 14:11:35.621 INFO running `"docker" "inspect" "ad605dfb7f8063c58982f78298b6babd4415d8ce80e5c3bfdd52fe0f5d4a7da9"`
Dec 19 14:11:35.810 INFO running `"docker" "rm" "-f" "ad605dfb7f8063c58982f78298b6babd4415d8ce80e5c3bfdd52fe0f5d4a7da9"`
Dec 19 14:11:36.062 INFO [stdout] ad605dfb7f8063c58982f78298b6babd4415d8ce80e5c3bfdd52fe0f5d4a7da9