Dec 17 19:45:42.553 INFO checking mexus/cancellable-read against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 19:45:42.553 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/mexus/cancellable-read:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:45:42.816 INFO [stdout] 8f3cb6e811429afd5dbd10249f0c29f98ac6ae5397ee209cedd77ff0be5d85b6
Dec 17 19:45:42.818 INFO running `"docker" "start" "-a" "8f3cb6e811429afd5dbd10249f0c29f98ac6ae5397ee209cedd77ff0be5d85b6"`
Dec 17 19:45:43.840 INFO [stderr]     Checking mio-uds v0.6.4
Dec 17 19:45:43.840 INFO [stderr]     Checking tokio-stdin-stdout v0.1.1
Dec 17 19:45:44.493 INFO [stderr]     Checking tokio-signal v0.1.4
Dec 17 19:45:44.971 INFO [stderr]     Checking async-stdio v0.1.0 (/opt/crater/workdir)
Dec 17 19:45:45.640 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.87s
Dec 17 19:45:46.200 INFO running `"docker" "inspect" "8f3cb6e811429afd5dbd10249f0c29f98ac6ae5397ee209cedd77ff0be5d85b6"`
Dec 17 19:45:46.294 INFO running `"docker" "rm" "-f" "8f3cb6e811429afd5dbd10249f0c29f98ac6ae5397ee209cedd77ff0be5d85b6"`
Dec 17 19:45:46.385 INFO [stdout] 8f3cb6e811429afd5dbd10249f0c29f98ac6ae5397ee209cedd77ff0be5d85b6