Dec 18 18:01:49.262 INFO checking buffoon-0.5.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 18:01:49.262 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/buffoon/0.5.0:/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 18:01:49.507 INFO [stdout] 0aebc725b5c59e7d993027faa54a5ace31aaaa809977ec94397b292bb8d375b2
Dec 18 18:01:49.508 INFO running `"docker" "start" "-a" "0aebc725b5c59e7d993027faa54a5ace31aaaa809977ec94397b292bb8d375b2"`
Dec 18 18:01:50.175 INFO [stderr]     Checking buffoon v0.5.0 (/opt/crater/workdir)
Dec 18 18:01:50.583 INFO [stderr] warning: variable does not need to be mutable
Dec 18 18:01:50.583 INFO [stderr]    --> src/input_stream.rs:104:17
Dec 18 18:01:50.583 INFO [stderr]     |
Dec 18 18:01:50.583 INFO [stderr] 104 |             let mut buf = slice::from_raw_parts_mut(ret.as_mut_ptr(), len);
Dec 18 18:01:50.583 INFO [stderr]     |                 ----^^^
Dec 18 18:01:50.583 INFO [stderr]     |                 |
Dec 18 18:01:50.583 INFO [stderr]     |                 help: remove this `mut`
Dec 18 18:01:50.583 INFO [stderr]     |
Dec 18 18:01:50.583 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 18:01:50.583 INFO [stderr] 
Dec 18 18:01:50.734 INFO [stderr] warning: variable does not need to be mutable
Dec 18 18:01:50.734 INFO [stderr]    --> src/input_stream.rs:104:17
Dec 18 18:01:50.734 INFO [stderr]     |
Dec 18 18:01:50.734 INFO [stderr] 104 |             let mut buf = slice::from_raw_parts_mut(ret.as_mut_ptr(), len);
Dec 18 18:01:50.734 INFO [stderr]     |                 ----^^^
Dec 18 18:01:50.734 INFO [stderr]     |                 |
Dec 18 18:01:50.734 INFO [stderr]     |                 help: remove this `mut`
Dec 18 18:01:50.734 INFO [stderr]     |
Dec 18 18:01:50.734 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 18:01:50.734 INFO [stderr] 
Dec 18 18:01:50.840 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
Dec 18 18:01:51.297 INFO running `"docker" "inspect" "0aebc725b5c59e7d993027faa54a5ace31aaaa809977ec94397b292bb8d375b2"`
Dec 18 18:01:51.440 INFO running `"docker" "rm" "-f" "0aebc725b5c59e7d993027faa54a5ace31aaaa809977ec94397b292bb8d375b2"`
Dec 18 18:01:51.608 INFO [stdout] 0aebc725b5c59e7d993027faa54a5ace31aaaa809977ec94397b292bb8d375b2