Dec 18 09:04:56.132 INFO checking xi-rope-0.2.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 09:04:56.132 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/xi-rope/0.2.0:/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 09:04:56.372 INFO [stdout] 7c509662c8d161e419041a9c160ea7bf708bc93fa53fe079e735d47e13a6b450
Dec 18 09:04:56.374 INFO running `"docker" "start" "-a" "7c509662c8d161e419041a9c160ea7bf708bc93fa53fe079e735d47e13a6b450"`
Dec 18 09:04:57.752 INFO [stderr]     Checking xi-rope v0.2.0 (/opt/crater/workdir)
Dec 18 09:04:58.580 INFO [stderr] warning: variable does not need to be mutable
Dec 18 09:04:58.580 INFO [stderr]    --> src/tree.rs:237:17
Dec 18 09:04:58.580 INFO [stderr]     |
Dec 18 09:04:58.580 INFO [stderr] 237 |             let mut node1 = Arc::make_mut(&mut rope1.0);
Dec 18 09:04:58.580 INFO [stderr]     |                 ----^^^^^
Dec 18 09:04:58.580 INFO [stderr]     |                 |
Dec 18 09:04:58.580 INFO [stderr]     |                 help: remove this `mut`
Dec 18 09:04:58.580 INFO [stderr]     |
Dec 18 09:04:58.580 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 09:04:58.580 INFO [stderr] 
Dec 18 09:04:59.058 INFO [stderr] warning: variable does not need to be mutable
Dec 18 09:04:59.059 INFO [stderr]    --> src/tree.rs:237:17
Dec 18 09:04:59.059 INFO [stderr]     |
Dec 18 09:04:59.059 INFO [stderr] 237 |             let mut node1 = Arc::make_mut(&mut rope1.0);
Dec 18 09:04:59.059 INFO [stderr]     |                 ----^^^^^
Dec 18 09:04:59.059 INFO [stderr]     |                 |
Dec 18 09:04:59.059 INFO [stderr]     |                 help: remove this `mut`
Dec 18 09:04:59.059 INFO [stderr]     |
Dec 18 09:04:59.059 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 09:04:59.059 INFO [stderr] 
Dec 18 09:04:59.357 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
Dec 18 09:04:59.855 INFO running `"docker" "inspect" "7c509662c8d161e419041a9c160ea7bf708bc93fa53fe079e735d47e13a6b450"`
Dec 18 09:04:59.998 INFO running `"docker" "rm" "-f" "7c509662c8d161e419041a9c160ea7bf708bc93fa53fe079e735d47e13a6b450"`
Dec 18 09:05:00.249 INFO [stdout] 7c509662c8d161e419041a9c160ea7bf708bc93fa53fe079e735d47e13a6b450