Dec 12 08:07:52.212 INFO checking rusty-sandbox-0.1.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 08:07:52.212 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 08:07:52.405 INFO [stdout] a676d2c917b811f3cff7c3eb79d8c86fe525639c49e7657556e9ea301d8a35cc
Dec 12 08:07:52.407 INFO running `"docker" "start" "-a" "a676d2c917b811f3cff7c3eb79d8c86fe525639c49e7657556e9ea301d8a35cc"`
Dec 12 08:07:53.152 INFO [stderr] usermod: no changes
Dec 12 08:07:53.187 INFO [stderr]     Checking rusty-sandbox v0.1.0 (/source)
Dec 12 08:07:53.888 INFO [stderr] warning: variable does not need to be mutable
Dec 12 08:07:53.888 INFO [stderr]    --> src/lib.rs:116:13
Dec 12 08:07:53.888 INFO [stderr]     |
Dec 12 08:07:53.888 INFO [stderr] 116 |         let mut f = File::open("UNLICENSE").unwrap();
Dec 12 08:07:53.888 INFO [stderr]     |             ----^
Dec 12 08:07:53.888 INFO [stderr]     |             |
Dec 12 08:07:53.888 INFO [stderr]     |             help: remove this `mut`
Dec 12 08:07:53.888 INFO [stderr]     |
Dec 12 08:07:53.888 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 12 08:07:53.888 INFO [stderr] 
Dec 12 08:07:53.888 INFO [stderr] warning: variable does not need to be mutable
Dec 12 08:07:53.888 INFO [stderr]    --> src/lib.rs:117:13
Dec 12 08:07:53.888 INFO [stderr]     |
Dec 12 08:07:53.888 INFO [stderr] 117 |         let mut process = Sandbox::new()
Dec 12 08:07:53.888 INFO [stderr]     |             ----^^^^^^^
Dec 12 08:07:53.888 INFO [stderr]     |             |
Dec 12 08:07:53.888 INFO [stderr]     |             help: remove this `mut`
Dec 12 08:07:53.888 INFO [stderr] 
Dec 12 08:07:53.908 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
Dec 12 08:07:53.908 INFO [stderr] su: No module specific data is present
Dec 12 08:07:54.288 INFO running `"docker" "inspect" "a676d2c917b811f3cff7c3eb79d8c86fe525639c49e7657556e9ea301d8a35cc"`
Dec 12 08:07:54.436 INFO running `"docker" "rm" "-f" "a676d2c917b811f3cff7c3eb79d8c86fe525639c49e7657556e9ea301d8a35cc"`
Dec 12 08:07:54.655 INFO [stdout] a676d2c917b811f3cff7c3eb79d8c86fe525639c49e7657556e9ea301d8a35cc