Dec 17 20:00:23.144 INFO checking matsumotory/middlecon against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 20:00:23.144 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/matsumotory/middlecon:/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 20:00:23.373 INFO [stdout] 30a9615531631ef264be3ad3446d4a9b94d3ca5364f32f06118db3bae9056a70
Dec 17 20:00:23.375 INFO running `"docker" "start" "-a" "30a9615531631ef264be3ad3446d4a9b94d3ca5364f32f06118db3bae9056a70"`
Dec 17 20:00:24.148 INFO [stderr]     Checking tokio-core v0.1.17
Dec 17 20:00:25.262 INFO [stderr]     Checking middlecon v0.1.0 (/opt/crater/workdir)
Dec 17 20:00:25.845 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.81s
Dec 17 20:00:26.144 INFO running `"docker" "inspect" "30a9615531631ef264be3ad3446d4a9b94d3ca5364f32f06118db3bae9056a70"`
Dec 17 20:00:26.236 INFO running `"docker" "rm" "-f" "30a9615531631ef264be3ad3446d4a9b94d3ca5364f32f06118db3bae9056a70"`
Dec 17 20:00:26.303 INFO [stdout] 30a9615531631ef264be3ad3446d4a9b94d3ca5364f32f06118db3bae9056a70