Dec 18 08:23:08.581 INFO checking Bkindmonk/RustPractice against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252 Dec 18 08:23:08.581 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/Bkindmonk/RustPractice:/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 08:23:09.846 INFO [stdout] 87a94d34b0ab31f7d65c0ddbc3f47c5432d81caf26e81e517c8aa61f98a4d1f0 Dec 18 08:23:09.848 INFO running `"docker" "start" "-a" "87a94d34b0ab31f7d65c0ddbc3f47c5432d81caf26e81e517c8aa61f98a4d1f0"` Dec 18 08:23:11.744 INFO [stderr] Checking mergesort v0.1.0 (/opt/crater/workdir) Dec 18 08:23:12.344 INFO [stderr] warning: variable does not need to be mutable Dec 18 08:23:12.344 INFO [stderr] --> src/main.rs:91:13 Dec 18 08:23:12.344 INFO [stderr] | Dec 18 08:23:12.344 INFO [stderr] 91 | let mut realhalves = (*real).split_at_mut(halflength); Dec 18 08:23:12.344 INFO [stderr] | ----^^^^^^^^^^ Dec 18 08:23:12.344 INFO [stderr] | | Dec 18 08:23:12.344 INFO [stderr] | help: remove this `mut` Dec 18 08:23:12.344 INFO [stderr] | Dec 18 08:23:12.344 INFO [stderr] = note: #[warn(unused_mut)] on by default Dec 18 08:23:12.344 INFO [stderr] Dec 18 08:23:12.344 INFO [stderr] warning: variable does not need to be mutable Dec 18 08:23:12.344 INFO [stderr] --> src/main.rs:92:13 Dec 18 08:23:12.344 INFO [stderr] | Dec 18 08:23:12.344 INFO [stderr] 92 | let mut scratchhalves = (*scratch).split_at_mut(halflength); Dec 18 08:23:12.344 INFO [stderr] | ----^^^^^^^^^^^^^ Dec 18 08:23:12.344 INFO [stderr] | | Dec 18 08:23:12.344 INFO [stderr] | help: remove this `mut` Dec 18 08:23:12.344 INFO [stderr] Dec 18 08:23:12.528 INFO [stderr] warning: variable does not need to be mutable Dec 18 08:23:12.528 INFO [stderr] --> src/main.rs:91:13 Dec 18 08:23:12.528 INFO [stderr] | Dec 18 08:23:12.528 INFO [stderr] 91 | let mut realhalves = (*real).split_at_mut(halflength); Dec 18 08:23:12.528 INFO [stderr] | ----^^^^^^^^^^ Dec 18 08:23:12.528 INFO [stderr] | | Dec 18 08:23:12.528 INFO [stderr] | help: remove this `mut` Dec 18 08:23:12.528 INFO [stderr] | Dec 18 08:23:12.528 INFO [stderr] = note: #[warn(unused_mut)] on by default Dec 18 08:23:12.528 INFO [stderr] Dec 18 08:23:12.528 INFO [stderr] warning: variable does not need to be mutable Dec 18 08:23:12.528 INFO [stderr] --> src/main.rs:92:13 Dec 18 08:23:12.528 INFO [stderr] | Dec 18 08:23:12.528 INFO [stderr] 92 | let mut scratchhalves = (*scratch).split_at_mut(halflength); Dec 18 08:23:12.528 INFO [stderr] | ----^^^^^^^^^^^^^ Dec 18 08:23:12.528 INFO [stderr] | | Dec 18 08:23:12.528 INFO [stderr] | help: remove this `mut` Dec 18 08:23:12.528 INFO [stderr] Dec 18 08:23:12.560 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.85s Dec 18 08:23:13.316 INFO running `"docker" "inspect" "87a94d34b0ab31f7d65c0ddbc3f47c5432d81caf26e81e517c8aa61f98a4d1f0"` Dec 18 08:23:13.642 INFO running `"docker" "rm" "-f" "87a94d34b0ab31f7d65c0ddbc3f47c5432d81caf26e81e517c8aa61f98a4d1f0"` Dec 18 08:23:13.997 INFO [stdout] 87a94d34b0ab31f7d65c0ddbc3f47c5432d81caf26e81e517c8aa61f98a4d1f0