Dec 05 07:16:05.655 INFO checking rusty-sandbox-0.1.0 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 07:16:05.655 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-7/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 07:16:06.007 INFO [stdout] 584e7dbb68d823c793012db6b366cfb3c78cdae7ff71658c370a26c0bbfa3c98
Dec 05 07:16:06.012 INFO running `"docker" "start" "-a" "584e7dbb68d823c793012db6b366cfb3c78cdae7ff71658c370a26c0bbfa3c98"`
Dec 05 07:16:07.282 INFO [stderr] usermod: no changes
Dec 05 07:16:07.341 INFO [stderr]     Checking rusty-sandbox v0.1.0 (/source)
Dec 05 07:16:08.318 INFO [stderr] warning: variable does not need to be mutable
Dec 05 07:16:08.319 INFO [stderr]    --> src/lib.rs:116:13
Dec 05 07:16:08.319 INFO [stderr]     |
Dec 05 07:16:08.319 INFO [stderr] 116 |         let mut f = File::open("UNLICENSE").unwrap();
Dec 05 07:16:08.319 INFO [stderr]     |             ----^
Dec 05 07:16:08.319 INFO [stderr]     |             |
Dec 05 07:16:08.319 INFO [stderr]     |             help: remove this `mut`
Dec 05 07:16:08.319 INFO [stderr]     |
Dec 05 07:16:08.319 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 07:16:08.319 INFO [stderr] 
Dec 05 07:16:08.319 INFO [stderr] warning: variable does not need to be mutable
Dec 05 07:16:08.319 INFO [stderr]    --> src/lib.rs:117:13
Dec 05 07:16:08.319 INFO [stderr]     |
Dec 05 07:16:08.319 INFO [stderr] 117 |         let mut process = Sandbox::new()
Dec 05 07:16:08.319 INFO [stderr]     |             ----^^^^^^^
Dec 05 07:16:08.319 INFO [stderr]     |             |
Dec 05 07:16:08.319 INFO [stderr]     |             help: remove this `mut`
Dec 05 07:16:08.319 INFO [stderr] 
Dec 05 07:16:08.354 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
Dec 05 07:16:08.359 INFO [stderr] su: No module specific data is present
Dec 05 07:16:09.271 INFO running `"docker" "inspect" "584e7dbb68d823c793012db6b366cfb3c78cdae7ff71658c370a26c0bbfa3c98"`
Dec 05 07:16:09.569 INFO running `"docker" "rm" "-f" "584e7dbb68d823c793012db6b366cfb3c78cdae7ff71658c370a26c0bbfa3c98"`
Dec 05 07:16:09.862 INFO [stdout] 584e7dbb68d823c793012db6b366cfb3c78cdae7ff71658c370a26c0bbfa3c98