Dec 12 03:20:02.867 INFO checking D4nte/rustfmt-3209 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 03:20:02.867 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 03:20:03.378 INFO [stdout] 638ff56e48cde888c057ac8fa8ba9fa1a1ea37132f742c52dd7ffc0da1885eb1
Dec 12 03:20:03.380 INFO running `"docker" "start" "-a" "638ff56e48cde888c057ac8fa8ba9fa1a1ea37132f742c52dd7ffc0da1885eb1"`
Dec 12 03:20:05.352 INFO [stderr] usermod: no changes
Dec 12 03:20:05.420 INFO [stderr]     Checking tmp v0.1.0 (/source)
Dec 12 03:20:06.304 INFO [stderr] error[E0412]: cannot find type `Mutex` in this scope
Dec 12 03:20:06.304 INFO [stderr]  --> src/main.rs:7:26
Dec 12 03:20:06.304 INFO [stderr]   |
Dec 12 03:20:06.304 INFO [stderr] 7 |     next_internal_index: Mutex<u32>,
Dec 12 03:20:06.304 INFO [stderr]   |                          ^^^^^ not found in this scope
Dec 12 03:20:06.305 INFO [stderr] help: possible candidate is found in another module, you can import it into scope
Dec 12 03:20:06.305 INFO [stderr]   |
Dec 12 03:20:06.305 INFO [stderr] 2 | use std::sync::Mutex;
Dec 12 03:20:06.305 INFO [stderr]   |
Dec 12 03:20:06.305 INFO [stderr] 
Dec 12 03:20:06.336 INFO [stderr] error: aborting due to previous error
Dec 12 03:20:06.336 INFO [stderr] 
Dec 12 03:20:06.337 INFO [stderr] For more information about this error, try `rustc --explain E0412`.
Dec 12 03:20:06.343 INFO [stderr] error: Could not compile `tmp`.
Dec 12 03:20:06.343 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 12 03:20:06.396 INFO [stderr] error[E0412]: cannot find type `Mutex` in this scope
Dec 12 03:20:06.396 INFO [stderr]  --> src/main.rs:7:26
Dec 12 03:20:06.396 INFO [stderr]   |
Dec 12 03:20:06.396 INFO [stderr] 7 |     next_internal_index: Mutex<u32>,
Dec 12 03:20:06.396 INFO [stderr]   |                          ^^^^^ not found in this scope
Dec 12 03:20:06.396 INFO [stderr] help: possible candidate is found in another module, you can import it into scope
Dec 12 03:20:06.396 INFO [stderr]   |
Dec 12 03:20:06.396 INFO [stderr] 2 | use std::sync::Mutex;
Dec 12 03:20:06.396 INFO [stderr]   |
Dec 12 03:20:06.396 INFO [stderr] 
Dec 12 03:20:06.440 INFO [stderr] error: aborting due to previous error
Dec 12 03:20:06.440 INFO [stderr] 
Dec 12 03:20:06.440 INFO [stderr] For more information about this error, try `rustc --explain E0412`.
Dec 12 03:20:06.446 INFO [stderr] error: Could not compile `tmp`.
Dec 12 03:20:06.446 INFO [stderr] 
Dec 12 03:20:06.446 INFO [stderr] To learn more, run the command again with --verbose.
Dec 12 03:20:06.452 INFO [stderr] su: No module specific data is present
Dec 12 03:20:07.371 INFO running `"docker" "inspect" "638ff56e48cde888c057ac8fa8ba9fa1a1ea37132f742c52dd7ffc0da1885eb1"`
Dec 12 03:20:07.612 INFO running `"docker" "rm" "-f" "638ff56e48cde888c057ac8fa8ba9fa1a1ea37132f742c52dd7ffc0da1885eb1"`
Dec 12 03:20:07.876 INFO [stdout] 638ff56e48cde888c057ac8fa8ba9fa1a1ea37132f742c52dd7ffc0da1885eb1