Dec 18 18:20:47.771 INFO checking avec-0.1.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 18:20:47.771 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/avec/0.1.0:/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 18:20:48.032 INFO [stdout] c229a6de7b00f5471d31f0770f7a97ce8a68e8f072a432e09f87587a6a43d193
Dec 18 18:20:48.034 INFO running `"docker" "start" "-a" "c229a6de7b00f5471d31f0770f7a97ce8a68e8f072a432e09f87587a6a43d193"`
Dec 18 18:20:48.682 INFO [stderr]     Checking avec v0.1.0 (/opt/crater/workdir)
Dec 18 18:20:49.004 INFO [stderr] warning: variable does not need to be mutable
Dec 18 18:20:49.004 INFO [stderr]    --> src/avec.rs:209:17
Dec 18 18:20:49.004 INFO [stderr]     |
Dec 18 18:20:49.004 INFO [stderr] 209 |             let mut data = &mut *self.data.get();
Dec 18 18:20:49.004 INFO [stderr]     |                 ----^^^^
Dec 18 18:20:49.004 INFO [stderr]     |                 |
Dec 18 18:20:49.004 INFO [stderr]     |                 help: remove this `mut`
Dec 18 18:20:49.004 INFO [stderr]     |
Dec 18 18:20:49.004 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 18:20:49.004 INFO [stderr] 
Dec 18 18:20:49.008 INFO [stderr] warning: variable does not need to be mutable
Dec 18 18:20:49.008 INFO [stderr]    --> src/avec.rs:244:17
Dec 18 18:20:49.008 INFO [stderr]     |
Dec 18 18:20:49.008 INFO [stderr] 244 |             let mut data = &mut *self.data.get();
Dec 18 18:20:49.008 INFO [stderr]     |                 ----^^^^
Dec 18 18:20:49.008 INFO [stderr]     |                 |
Dec 18 18:20:49.008 INFO [stderr]     |                 help: remove this `mut`
Dec 18 18:20:49.008 INFO [stderr] 
Dec 18 18:20:49.012 INFO [stderr] warning: variable does not need to be mutable
Dec 18 18:20:49.012 INFO [stderr]    --> src/avec.rs:209:17
Dec 18 18:20:49.012 INFO [stderr]     |
Dec 18 18:20:49.012 INFO [stderr] 209 |             let mut data = &mut *self.data.get();
Dec 18 18:20:49.012 INFO [stderr]     |                 ----^^^^
Dec 18 18:20:49.012 INFO [stderr]     |                 |
Dec 18 18:20:49.012 INFO [stderr]     |                 help: remove this `mut`
Dec 18 18:20:49.012 INFO [stderr]     |
Dec 18 18:20:49.012 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 18:20:49.012 INFO [stderr] 
Dec 18 18:20:49.021 INFO [stderr] warning: variable does not need to be mutable
Dec 18 18:20:49.021 INFO [stderr]    --> src/avec.rs:244:17
Dec 18 18:20:49.021 INFO [stderr]     |
Dec 18 18:20:49.021 INFO [stderr] 244 |             let mut data = &mut *self.data.get();
Dec 18 18:20:49.021 INFO [stderr]     |                 ----^^^^
Dec 18 18:20:49.021 INFO [stderr]     |                 |
Dec 18 18:20:49.021 INFO [stderr]     |                 help: remove this `mut`
Dec 18 18:20:49.021 INFO [stderr] 
Dec 18 18:20:49.425 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
Dec 18 18:20:50.281 INFO running `"docker" "inspect" "c229a6de7b00f5471d31f0770f7a97ce8a68e8f072a432e09f87587a6a43d193"`
Dec 18 18:20:50.716 INFO running `"docker" "rm" "-f" "c229a6de7b00f5471d31f0770f7a97ce8a68e8f072a432e09f87587a6a43d193"`
Dec 18 18:20:51.004 INFO [stdout] c229a6de7b00f5471d31f0770f7a97ce8a68e8f072a432e09f87587a6a43d193