Dec 18 11:40:12.709 INFO checking rusty-sandbox-0.1.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 11:40:12.709 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/reg/rusty-sandbox/0.1.0:/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 11:40:12.936 INFO [stdout] 8c81ff31c50ad74131e24083f7728256a38db379a5eb2671dbaabc5385880b96
Dec 18 11:40:12.940 INFO running `"docker" "start" "-a" "8c81ff31c50ad74131e24083f7728256a38db379a5eb2671dbaabc5385880b96"`
Dec 18 11:40:13.753 INFO [stderr]     Checking rusty-sandbox v0.1.0 (/opt/crater/workdir)
Dec 18 11:40:14.196 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:40:14.196 INFO [stderr]    --> src/lib.rs:116:13
Dec 18 11:40:14.196 INFO [stderr]     |
Dec 18 11:40:14.196 INFO [stderr] 116 |         let mut f = File::open("UNLICENSE").unwrap();
Dec 18 11:40:14.196 INFO [stderr]     |             ----^
Dec 18 11:40:14.196 INFO [stderr]     |             |
Dec 18 11:40:14.196 INFO [stderr]     |             help: remove this `mut`
Dec 18 11:40:14.196 INFO [stderr]     |
Dec 18 11:40:14.196 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 11:40:14.196 INFO [stderr] 
Dec 18 11:40:14.196 INFO [stderr] warning: variable does not need to be mutable
Dec 18 11:40:14.196 INFO [stderr]    --> src/lib.rs:117:13
Dec 18 11:40:14.196 INFO [stderr]     |
Dec 18 11:40:14.196 INFO [stderr] 117 |         let mut process = Sandbox::new()
Dec 18 11:40:14.196 INFO [stderr]     |             ----^^^^^^^
Dec 18 11:40:14.196 INFO [stderr]     |             |
Dec 18 11:40:14.196 INFO [stderr]     |             help: remove this `mut`
Dec 18 11:40:14.196 INFO [stderr] 
Dec 18 11:40:14.268 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
Dec 18 11:40:14.694 INFO running `"docker" "inspect" "8c81ff31c50ad74131e24083f7728256a38db379a5eb2671dbaabc5385880b96"`
Dec 18 11:40:14.866 INFO running `"docker" "rm" "-f" "8c81ff31c50ad74131e24083f7728256a38db379a5eb2671dbaabc5385880b96"`
Dec 18 11:40:15.153 INFO [stdout] 8c81ff31c50ad74131e24083f7728256a38db379a5eb2671dbaabc5385880b96