Dec 04 18:32:41.352 INFO checking fneddy/rat12 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 18:32:41.352 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 04 18:32:41.831 INFO [stdout] 00d5a819086b6151d4e1919d06820df16dae5899185c757edf322123a20cde79
Dec 04 18:32:41.834 INFO running `"docker" "start" "-a" "00d5a819086b6151d4e1919d06820df16dae5899185c757edf322123a20cde79"`
Dec 04 18:32:43.339 INFO [stderr] usermod: no changes
Dec 04 18:32:43.388 INFO [stderr]     Checking rat12 v0.1.0 (/source)
Dec 04 18:32:44.035 INFO [stderr] warning: unused variable: `buf`
Dec 04 18:32:44.035 INFO [stderr]   --> src/cluster.rs:60:25
Dec 04 18:32:44.035 INFO [stderr]    |
Dec 04 18:32:44.050 INFO [stderr] 60 |     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
Dec 04 18:32:44.050 INFO [stderr]    |                         ^^^ help: consider using `_buf` instead
Dec 04 18:32:44.050 INFO [stderr]    |
Dec 04 18:32:44.050 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 18:32:44.050 INFO [stderr] 
Dec 04 18:32:44.067 INFO [stderr] warning: variable does not need to be mutable
Dec 04 18:32:44.067 INFO [stderr]   --> src/cluster.rs:31:16
Dec 04 18:32:44.067 INFO [stderr]    |
Dec 04 18:32:44.067 INFO [stderr] 31 |     pub fn new(mut descriptor: Arc<RwLock<T>>,
Dec 04 18:32:44.067 INFO [stderr]    |                ----^^^^^^^^^^
Dec 04 18:32:44.067 INFO [stderr]    |                |
Dec 04 18:32:44.067 INFO [stderr]    |                help: remove this `mut`
Dec 04 18:32:44.067 INFO [stderr]    |
Dec 04 18:32:44.067 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 18:32:44.067 INFO [stderr] 
Dec 04 18:32:44.107 INFO [stderr] warning: unused variable: `buf`
Dec 04 18:32:44.107 INFO [stderr]   --> src/cluster.rs:60:25
Dec 04 18:32:44.107 INFO [stderr]    |
Dec 04 18:32:44.107 INFO [stderr] 60 |     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
Dec 04 18:32:44.107 INFO [stderr]    |                         ^^^ help: consider using `_buf` instead
Dec 04 18:32:44.107 INFO [stderr]    |
Dec 04 18:32:44.107 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 18:32:44.107 INFO [stderr] 
Dec 04 18:32:44.247 INFO [stderr] warning: variable does not need to be mutable
Dec 04 18:32:44.247 INFO [stderr]   --> src/cluster.rs:31:16
Dec 04 18:32:44.247 INFO [stderr]    |
Dec 04 18:32:44.247 INFO [stderr] 31 |     pub fn new(mut descriptor: Arc<RwLock<T>>,
Dec 04 18:32:44.247 INFO [stderr]    |                ----^^^^^^^^^^
Dec 04 18:32:44.247 INFO [stderr]    |                |
Dec 04 18:32:44.247 INFO [stderr]    |                help: remove this `mut`
Dec 04 18:32:44.247 INFO [stderr]    |
Dec 04 18:32:44.247 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 18:32:44.247 INFO [stderr] 
Dec 04 18:32:44.953 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
Dec 04 18:32:44.964 INFO [stderr] su: No module specific data is present
Dec 04 18:32:45.623 INFO running `"docker" "inspect" "00d5a819086b6151d4e1919d06820df16dae5899185c757edf322123a20cde79"`
Dec 04 18:32:45.851 INFO running `"docker" "rm" "-f" "00d5a819086b6151d4e1919d06820df16dae5899185c757edf322123a20cde79"`
Dec 04 18:32:46.087 INFO [stdout] 00d5a819086b6151d4e1919d06820df16dae5899185c757edf322123a20cde79