Dec 17 20:09:36.556 INFO checking marinintim/thrall against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 20:09:36.556 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/marinintim/thrall:/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 20:09:36.739 INFO [stdout] 01ca80f950931c89adb6f76d7b4e2d1fd2ad304f034267f3b011bc130ee54ba3
Dec 17 20:09:36.742 INFO running `"docker" "start" "-a" "01ca80f950931c89adb6f76d7b4e2d1fd2ad304f034267f3b011bc130ee54ba3"`
Dec 17 20:09:37.499 INFO [stderr]     Checking hyper v0.10.5
Dec 17 20:09:40.522 INFO [stderr]     Checking iron v0.5.1
Dec 17 20:09:41.083 INFO [stderr]     Checking thrall v0.1.0 (/opt/crater/workdir)
Dec 17 20:09:41.425 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.01s
Dec 17 20:09:41.702 INFO running `"docker" "inspect" "01ca80f950931c89adb6f76d7b4e2d1fd2ad304f034267f3b011bc130ee54ba3"`
Dec 17 20:09:41.798 INFO running `"docker" "rm" "-f" "01ca80f950931c89adb6f76d7b4e2d1fd2ad304f034267f3b011bc130ee54ba3"`
Dec 17 20:09:41.863 INFO [stdout] 01ca80f950931c89adb6f76d7b4e2d1fd2ad304f034267f3b011bc130ee54ba3