Dec 18 00:09:38.871 INFO checking fneddy/rat12 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 00:09:38.871 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/fneddy/rat12:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 00:09:39.380 INFO [stdout] e7a310a40c8394f1278a6a111b4d1d1eb3aca22efc26a3ebffedf1e0b6bed894
Dec 18 00:09:39.386 INFO running `"docker" "start" "-a" "e7a310a40c8394f1278a6a111b4d1d1eb3aca22efc26a3ebffedf1e0b6bed894"`
Dec 18 00:09:41.312 INFO [stderr]     Checking rat12 v0.1.0 (/opt/crater/workdir)
Dec 18 00:09:42.028 INFO [stderr] warning: unused variable: `buf`
Dec 18 00:09:42.028 INFO [stderr]   --> src/cluster.rs:60:25
Dec 18 00:09:42.028 INFO [stderr]    |
Dec 18 00:09:42.028 INFO [stderr] 60 |     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
Dec 18 00:09:42.028 INFO [stderr]    |                         ^^^ help: consider using `_buf` instead
Dec 18 00:09:42.028 INFO [stderr]    |
Dec 18 00:09:42.028 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 00:09:42.028 INFO [stderr] 
Dec 18 00:09:42.028 INFO [stderr] warning: unused variable: `buf`
Dec 18 00:09:42.028 INFO [stderr]   --> src/cluster.rs:60:25
Dec 18 00:09:42.028 INFO [stderr]    |
Dec 18 00:09:42.028 INFO [stderr] 60 |     fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
Dec 18 00:09:42.028 INFO [stderr]    |                         ^^^ help: consider using `_buf` instead
Dec 18 00:09:42.028 INFO [stderr]    |
Dec 18 00:09:42.028 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 00:09:42.028 INFO [stderr] 
Dec 18 00:09:42.072 INFO [stderr] warning: variable does not need to be mutable
Dec 18 00:09:42.072 INFO [stderr]   --> src/cluster.rs:31:16
Dec 18 00:09:42.072 INFO [stderr]    |
Dec 18 00:09:42.072 INFO [stderr] 31 |     pub fn new(mut descriptor: Arc<RwLock<T>>,
Dec 18 00:09:42.072 INFO [stderr]    |                ----^^^^^^^^^^
Dec 18 00:09:42.072 INFO [stderr]    |                |
Dec 18 00:09:42.072 INFO [stderr]    |                help: remove this `mut`
Dec 18 00:09:42.072 INFO [stderr]    |
Dec 18 00:09:42.072 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 00:09:42.072 INFO [stderr] 
Dec 18 00:09:42.104 INFO [stderr] warning: variable does not need to be mutable
Dec 18 00:09:42.104 INFO [stderr]   --> src/cluster.rs:31:16
Dec 18 00:09:42.104 INFO [stderr]    |
Dec 18 00:09:42.104 INFO [stderr] 31 |     pub fn new(mut descriptor: Arc<RwLock<T>>,
Dec 18 00:09:42.104 INFO [stderr]    |                ----^^^^^^^^^^
Dec 18 00:09:42.104 INFO [stderr]    |                |
Dec 18 00:09:42.104 INFO [stderr]    |                help: remove this `mut`
Dec 18 00:09:42.104 INFO [stderr]    |
Dec 18 00:09:42.104 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 00:09:42.104 INFO [stderr] 
Dec 18 00:09:42.596 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
Dec 18 00:09:43.508 INFO running `"docker" "inspect" "e7a310a40c8394f1278a6a111b4d1d1eb3aca22efc26a3ebffedf1e0b6bed894"`
Dec 18 00:09:43.830 INFO running `"docker" "rm" "-f" "e7a310a40c8394f1278a6a111b4d1d1eb3aca22efc26a3ebffedf1e0b6bed894"`
Dec 18 00:09:44.120 INFO [stdout] e7a310a40c8394f1278a6a111b4d1d1eb3aca22efc26a3ebffedf1e0b6bed894