Dec 18 18:19:11.865 INFO checking background_worker-0.1.1 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 18:19:11.865 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/reg/background_worker/0.1.1:/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 18 18:19:12.206 INFO [stdout] 21e300a7945ec6576660c2fd5157fcba7a92ef110e7337ee4758bffff57e951c
Dec 18 18:19:12.210 INFO running `"docker" "start" "-a" "21e300a7945ec6576660c2fd5157fcba7a92ef110e7337ee4758bffff57e951c"`
Dec 18 18:19:13.780 INFO [stderr]     Checking background_worker v0.1.1 (/opt/crater/workdir)
Dec 18 18:19:14.148 INFO [stderr] warning: unused import: `BackgroundWorker`
Dec 18 18:19:14.148 INFO [stderr]  --> src/test.rs:1:5
Dec 18 18:19:14.148 INFO [stderr]   |
Dec 18 18:19:14.148 INFO [stderr] 1 | use BackgroundWorker;
Dec 18 18:19:14.148 INFO [stderr]   |     ^^^^^^^^^^^^^^^^
Dec 18 18:19:14.148 INFO [stderr]   |
Dec 18 18:19:14.148 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 18:19:14.149 INFO [stderr] 
Dec 18 18:19:14.149 INFO [stderr] warning: unused import: `std::thread`
Dec 18 18:19:14.149 INFO [stderr]  --> src/test.rs:2:5
Dec 18 18:19:14.149 INFO [stderr]   |
Dec 18 18:19:14.149 INFO [stderr] 2 | use std::thread;
Dec 18 18:19:14.149 INFO [stderr]   |     ^^^^^^^^^^^
Dec 18 18:19:14.149 INFO [stderr] 
Dec 18 18:19:14.312 INFO [stderr] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
Dec 18 18:19:14.312 INFO [stderr]   --> src/test.rs:31:13
Dec 18 18:19:14.312 INFO [stderr]    |
Dec 18 18:19:14.312 INFO [stderr] 31 |             thread::sleep_ms(500)
Dec 18 18:19:14.312 INFO [stderr]    |             ^^^^^^^^^^^^^^^^
Dec 18 18:19:14.312 INFO [stderr]    |
Dec 18 18:19:14.312 INFO [stderr]    = note: #[warn(deprecated)] on by default
Dec 18 18:19:14.312 INFO [stderr] 
Dec 18 18:19:14.464 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Dec 18 18:19:15.128 INFO running `"docker" "inspect" "21e300a7945ec6576660c2fd5157fcba7a92ef110e7337ee4758bffff57e951c"`
Dec 18 18:19:15.554 INFO running `"docker" "rm" "-f" "21e300a7945ec6576660c2fd5157fcba7a92ef110e7337ee4758bffff57e951c"`
Dec 18 18:19:15.880 INFO [stdout] 21e300a7945ec6576660c2fd5157fcba7a92ef110e7337ee4758bffff57e951c