Dec 11 18:22:50.180 INFO checking fneddy/rat12 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 18:22:50.188 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 18:22:50.702 INFO [stdout] ba5ece77716c05a6dbba8daa8a6e572f127fc78eb28c8a5865f78db24119679a
Dec 11 18:22:50.708 INFO running `"docker" "start" "-a" "ba5ece77716c05a6dbba8daa8a6e572f127fc78eb28c8a5865f78db24119679a"`
Dec 11 18:22:51.857 INFO [stderr] usermod: no changes
Dec 11 18:22:51.908 INFO [stderr]     Checking rat12 v0.1.0 (/source)
Dec 11 18:22:52.508 INFO [stderr] warning: unused variable: `buf`
Dec 11 18:22:52.508 INFO [stderr]   --> src/cluster.rs:60:25
Dec 11 18:22:52.508 INFO [stderr]    |
Dec 11 18:22:52.508 INFO [stderr] 60 |     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
Dec 11 18:22:52.508 INFO [stderr]    |                         ^^^ help: consider using `_buf` instead
Dec 11 18:22:52.508 INFO [stderr]    |
Dec 11 18:22:52.508 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 18:22:52.508 INFO [stderr] 
Dec 11 18:22:52.544 INFO [stderr] warning: variable does not need to be mutable
Dec 11 18:22:52.544 INFO [stderr]   --> src/cluster.rs:31:16
Dec 11 18:22:52.544 INFO [stderr]    |
Dec 11 18:22:52.544 INFO [stderr] 31 |     pub fn new(mut descriptor: Arc<RwLock<T>>,
Dec 11 18:22:52.544 INFO [stderr]    |                ----^^^^^^^^^^
Dec 11 18:22:52.544 INFO [stderr]    |                |
Dec 11 18:22:52.544 INFO [stderr]    |                help: remove this `mut`
Dec 11 18:22:52.544 INFO [stderr]    |
Dec 11 18:22:52.544 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 18:22:52.544 INFO [stderr] 
Dec 11 18:22:52.600 INFO [stderr] warning: unused variable: `buf`
Dec 11 18:22:52.600 INFO [stderr]   --> src/cluster.rs:60:25
Dec 11 18:22:52.600 INFO [stderr]    |
Dec 11 18:22:52.600 INFO [stderr] 60 |     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
Dec 11 18:22:52.600 INFO [stderr]    |                         ^^^ help: consider using `_buf` instead
Dec 11 18:22:52.600 INFO [stderr]    |
Dec 11 18:22:52.600 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 18:22:52.600 INFO [stderr] 
Dec 11 18:22:52.622 INFO [stderr] warning: variable does not need to be mutable
Dec 11 18:22:52.622 INFO [stderr]   --> src/cluster.rs:31:16
Dec 11 18:22:52.622 INFO [stderr]    |
Dec 11 18:22:52.622 INFO [stderr] 31 |     pub fn new(mut descriptor: Arc<RwLock<T>>,
Dec 11 18:22:52.622 INFO [stderr]    |                ----^^^^^^^^^^
Dec 11 18:22:52.622 INFO [stderr]    |                |
Dec 11 18:22:52.622 INFO [stderr]    |                help: remove this `mut`
Dec 11 18:22:52.622 INFO [stderr]    |
Dec 11 18:22:52.622 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 18:22:52.622 INFO [stderr] 
Dec 11 18:22:53.456 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
Dec 11 18:22:53.460 INFO [stderr] su: No module specific data is present
Dec 11 18:22:54.108 INFO running `"docker" "inspect" "ba5ece77716c05a6dbba8daa8a6e572f127fc78eb28c8a5865f78db24119679a"`
Dec 11 18:22:54.338 INFO running `"docker" "rm" "-f" "ba5ece77716c05a6dbba8daa8a6e572f127fc78eb28c8a5865f78db24119679a"`
Dec 11 18:22:54.716 INFO [stdout] ba5ece77716c05a6dbba8daa8a6e572f127fc78eb28c8a5865f78db24119679a