Dec 18 08:04:04.676 INFO checking D4nte/rustfmt-3209 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 08:04:04.676 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/D4nte/rustfmt-3209:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:04:05.250 INFO [stdout] f78b92e8de97d10fb122ef9b9ce6c29c2d9a13f2e248874ad2b489d86852ea9f
Dec 18 08:04:05.256 INFO running `"docker" "start" "-a" "f78b92e8de97d10fb122ef9b9ce6c29c2d9a13f2e248874ad2b489d86852ea9f"`
Dec 18 08:04:06.443 INFO [stderr]     Checking tmp v0.1.0 (/opt/crater/workdir)
Dec 18 08:04:06.758 INFO [stderr] error[E0412]: cannot find type `Mutex` in this scope
Dec 18 08:04:06.758 INFO [stderr]  --> src/main.rs:7:26
Dec 18 08:04:06.758 INFO [stderr]   |
Dec 18 08:04:06.758 INFO [stderr] 7 |     next_internal_index: Mutex<u32>,
Dec 18 08:04:06.758 INFO [stderr]   |                          ^^^^^ not found in this scope
Dec 18 08:04:06.758 INFO [stderr] help: possible candidate is found in another module, you can import it into scope
Dec 18 08:04:06.758 INFO [stderr]   |
Dec 18 08:04:06.759 INFO [stderr] 2 | use std::sync::Mutex;
Dec 18 08:04:06.759 INFO [stderr]   |
Dec 18 08:04:06.759 INFO [stderr] 
Dec 18 08:04:06.788 INFO [stderr] error: aborting due to previous error
Dec 18 08:04:06.788 INFO [stderr] 
Dec 18 08:04:06.788 INFO [stderr] For more information about this error, try `rustc --explain E0412`.
Dec 18 08:04:06.797 INFO [stderr] error: Could not compile `tmp`.
Dec 18 08:04:06.797 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 18 08:04:06.860 INFO [stderr] error[E0412]: cannot find type `Mutex` in this scope
Dec 18 08:04:06.861 INFO [stderr]  --> src/main.rs:7:26
Dec 18 08:04:06.861 INFO [stderr]   |
Dec 18 08:04:06.861 INFO [stderr] 7 |     next_internal_index: Mutex<u32>,
Dec 18 08:04:06.861 INFO [stderr]   |                          ^^^^^ not found in this scope
Dec 18 08:04:06.861 INFO [stderr] help: possible candidate is found in another module, you can import it into scope
Dec 18 08:04:06.861 INFO [stderr]   |
Dec 18 08:04:06.861 INFO [stderr] 2 | use std::sync::Mutex;
Dec 18 08:04:06.861 INFO [stderr]   |
Dec 18 08:04:06.861 INFO [stderr] 
Dec 18 08:04:06.883 INFO [stderr] error: aborting due to previous error
Dec 18 08:04:06.883 INFO [stderr] 
Dec 18 08:04:06.883 INFO [stderr] For more information about this error, try `rustc --explain E0412`.
Dec 18 08:04:06.889 INFO [stderr] error: Could not compile `tmp`.
Dec 18 08:04:06.889 INFO [stderr] 
Dec 18 08:04:06.889 INFO [stderr] To learn more, run the command again with --verbose.
Dec 18 08:04:07.322 INFO running `"docker" "inspect" "f78b92e8de97d10fb122ef9b9ce6c29c2d9a13f2e248874ad2b489d86852ea9f"`
Dec 18 08:04:07.413 INFO running `"docker" "rm" "-f" "f78b92e8de97d10fb122ef9b9ce6c29c2d9a13f2e248874ad2b489d86852ea9f"`
Dec 18 08:04:07.532 INFO [stdout] f78b92e8de97d10fb122ef9b9ce6c29c2d9a13f2e248874ad2b489d86852ea9f