Dec 18 12:04:31.088 INFO checking rsfs-0.4.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 12:04:31.089 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/rsfs/0.4.1:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 12:04:31.473 INFO [stdout] 5c649cd83c5883badd7ba1f9908eb5e23221f38233ffc3f004e1c3020303392b
Dec 18 12:04:31.478 INFO running `"docker" "start" "-a" "5c649cd83c5883badd7ba1f9908eb5e23221f38233ffc3f004e1c3020303392b"`
Dec 18 12:04:32.888 INFO [stderr]     Checking parking_lot v0.4.8
Dec 18 12:04:33.650 INFO [stderr]     Checking rsfs v0.4.1 (/opt/crater/workdir)
Dec 18 12:04:34.928 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:04:34.928 INFO [stderr]    --> src/mem/unix.rs:197:13
Dec 18 12:04:34.928 INFO [stderr]     |
Dec 18 12:04:34.928 INFO [stderr] 197 |         let mut dst = &mut self.data;
Dec 18 12:04:34.928 INFO [stderr]     |             ----^^^
Dec 18 12:04:34.928 INFO [stderr]     |             |
Dec 18 12:04:34.928 INFO [stderr]     |             help: remove this `mut`
Dec 18 12:04:34.928 INFO [stderr]     |
Dec 18 12:04:34.928 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 12:04:34.928 INFO [stderr] 
Dec 18 12:04:34.930 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:04:34.930 INFO [stderr]    --> src/mem/unix.rs:197:13
Dec 18 12:04:34.930 INFO [stderr]     |
Dec 18 12:04:34.930 INFO [stderr] 197 |         let mut dst = &mut self.data;
Dec 18 12:04:34.930 INFO [stderr]     |             ----^^^
Dec 18 12:04:34.930 INFO [stderr]     |             |
Dec 18 12:04:34.930 INFO [stderr]     |             help: remove this `mut`
Dec 18 12:04:34.930 INFO [stderr] 
Dec 18 12:04:35.852 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:04:35.852 INFO [stderr]    --> src/mem/unix.rs:197:13
Dec 18 12:04:35.852 INFO [stderr]     |
Dec 18 12:04:35.852 INFO [stderr] 197 |         let mut dst = &mut self.data;
Dec 18 12:04:35.852 INFO [stderr]     |             ----^^^
Dec 18 12:04:35.852 INFO [stderr]     |             |
Dec 18 12:04:35.852 INFO [stderr]     |             help: remove this `mut`
Dec 18 12:04:35.852 INFO [stderr]     |
Dec 18 12:04:35.852 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 12:04:35.852 INFO [stderr] 
Dec 18 12:04:35.852 INFO [stderr] warning: variable does not need to be mutable
Dec 18 12:04:35.852 INFO [stderr]    --> src/mem/unix.rs:197:13
Dec 18 12:04:35.852 INFO [stderr]     |
Dec 18 12:04:35.852 INFO [stderr] 197 |         let mut dst = &mut self.data;
Dec 18 12:04:35.852 INFO [stderr]     |             ----^^^
Dec 18 12:04:35.852 INFO [stderr]     |             |
Dec 18 12:04:35.852 INFO [stderr]     |             help: remove this `mut`
Dec 18 12:04:35.852 INFO [stderr] 
Dec 18 12:04:36.412 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.59s
Dec 18 12:04:36.867 INFO running `"docker" "inspect" "5c649cd83c5883badd7ba1f9908eb5e23221f38233ffc3f004e1c3020303392b"`
Dec 18 12:04:36.942 INFO running `"docker" "rm" "-f" "5c649cd83c5883badd7ba1f9908eb5e23221f38233ffc3f004e1c3020303392b"`
Dec 18 12:04:37.053 INFO [stdout] 5c649cd83c5883badd7ba1f9908eb5e23221f38233ffc3f004e1c3020303392b