Dec 19 10:00:55.779 INFO checking rom1v/mio-not-connected against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 10:00:55.779 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/rom1v/mio-not-connected:/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 10:00:56.322 INFO [stdout] 3a2d5495f621f34c103be8306912e5d36e08d7e1288c53c20e041fbf6b0e9c57
Dec 19 10:00:56.324 INFO running `"docker" "start" "-a" "3a2d5495f621f34c103be8306912e5d36e08d7e1288c53c20e041fbf6b0e9c57"`
Dec 19 10:00:59.088 INFO [stderr]     Checking net2 v0.2.31
Dec 19 10:00:59.702 INFO [stderr]     Checking mio v0.6.10
Dec 19 10:01:01.155 INFO [stderr]     Checking mio-not-connected v0.1.0 (/opt/crater/workdir)
Dec 19 10:01:01.692 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.65s
Dec 19 10:01:02.688 INFO running `"docker" "inspect" "3a2d5495f621f34c103be8306912e5d36e08d7e1288c53c20e041fbf6b0e9c57"`
Dec 19 10:01:02.992 INFO running `"docker" "rm" "-f" "3a2d5495f621f34c103be8306912e5d36e08d7e1288c53c20e041fbf6b0e9c57"`
Dec 19 10:01:03.312 INFO [stdout] 3a2d5495f621f34c103be8306912e5d36e08d7e1288c53c20e041fbf6b0e9c57