Dec 04 18:32:41.782 INFO checking fneddy/rat12 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 18:32:41.782 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 18:32:42.143 INFO [stdout] 2aba7f1052c52a16ef737da41c2a0b3f2278e25ff6156b513a6281847d42a51f
Dec 04 18:32:42.148 INFO running `"docker" "start" "-a" "2aba7f1052c52a16ef737da41c2a0b3f2278e25ff6156b513a6281847d42a51f"`
Dec 04 18:32:43.137 INFO [stderr] usermod: no changes
Dec 04 18:32:43.218 INFO [stderr]     Checking rat12 v0.1.0 (/source)
Dec 04 18:32:43.859 INFO [stderr] warning: unused variable: `buf`
Dec 04 18:32:43.859 INFO [stderr]   --> src/cluster.rs:60:25
Dec 04 18:32:43.859 INFO [stderr]    |
Dec 04 18:32:43.859 INFO [stderr] 60 |     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
Dec 04 18:32:43.859 INFO [stderr]    |                         ^^^ help: consider using `_buf` instead
Dec 04 18:32:43.859 INFO [stderr]    |
Dec 04 18:32:43.859 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 18:32:43.859 INFO [stderr] 
Dec 04 18:32:43.915 INFO [stderr] warning: variable does not need to be mutable
Dec 04 18:32:43.915 INFO [stderr]   --> src/cluster.rs:31:16
Dec 04 18:32:43.915 INFO [stderr]    |
Dec 04 18:32:43.915 INFO [stderr] 31 |     pub fn new(mut descriptor: Arc<RwLock<T>>,
Dec 04 18:32:43.915 INFO [stderr]    |                ----^^^^^^^^^^
Dec 04 18:32:43.915 INFO [stderr]    |                |
Dec 04 18:32:43.915 INFO [stderr]    |                help: remove this `mut`
Dec 04 18:32:43.915 INFO [stderr]    |
Dec 04 18:32:43.915 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 18:32:43.915 INFO [stderr] 
Dec 04 18:32:43.959 INFO [stderr] warning: unused variable: `buf`
Dec 04 18:32:43.959 INFO [stderr]   --> src/cluster.rs:60:25
Dec 04 18:32:43.959 INFO [stderr]    |
Dec 04 18:32:43.959 INFO [stderr] 60 |     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
Dec 04 18:32:43.959 INFO [stderr]    |                         ^^^ help: consider using `_buf` instead
Dec 04 18:32:43.959 INFO [stderr]    |
Dec 04 18:32:43.959 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 18:32:43.959 INFO [stderr] 
Dec 04 18:32:44.031 INFO [stderr] warning: variable does not need to be mutable
Dec 04 18:32:44.031 INFO [stderr]   --> src/cluster.rs:31:16
Dec 04 18:32:44.031 INFO [stderr]    |
Dec 04 18:32:44.031 INFO [stderr] 31 |     pub fn new(mut descriptor: Arc<RwLock<T>>,
Dec 04 18:32:44.031 INFO [stderr]    |                ----^^^^^^^^^^
Dec 04 18:32:44.031 INFO [stderr]    |                |
Dec 04 18:32:44.031 INFO [stderr]    |                help: remove this `mut`
Dec 04 18:32:44.031 INFO [stderr]    |
Dec 04 18:32:44.031 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 18:32:44.031 INFO [stderr] 
Dec 04 18:32:44.923 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.76s
Dec 04 18:32:44.923 INFO [stderr] su: No module specific data is present
Dec 04 18:32:45.584 INFO running `"docker" "inspect" "2aba7f1052c52a16ef737da41c2a0b3f2278e25ff6156b513a6281847d42a51f"`
Dec 04 18:32:45.819 INFO running `"docker" "rm" "-f" "2aba7f1052c52a16ef737da41c2a0b3f2278e25ff6156b513a6281847d42a51f"`
Dec 04 18:32:46.070 INFO [stdout] 2aba7f1052c52a16ef737da41c2a0b3f2278e25ff6156b513a6281847d42a51f