Dec 18 10:55:34.057 INFO checking spectral-0.6.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 10:55:34.057 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/spectral/0.6.0:/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 10:55:34.828 INFO [stdout] 111bbc736f9d88d024d2f372a89e574223c530343cd41ecb3302943008de08f5
Dec 18 10:55:34.831 INFO running `"docker" "start" "-a" "111bbc736f9d88d024d2f372a89e574223c530343cd41ecb3302943008de08f5"`
Dec 18 10:55:36.660 INFO [stderr]     Checking spectral v0.6.0 (/opt/crater/workdir)
Dec 18 10:55:38.152 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:55:38.152 INFO [stderr]    --> src/lib.rs:318:13
Dec 18 10:55:38.152 INFO [stderr]     |
Dec 18 10:55:38.152 INFO [stderr] 318 |         let mut assertion = self;
Dec 18 10:55:38.152 INFO [stderr]     |             ----^^^^^^^^^
Dec 18 10:55:38.152 INFO [stderr]     |             |
Dec 18 10:55:38.152 INFO [stderr]     |             help: remove this `mut`
Dec 18 10:55:38.152 INFO [stderr]     |
Dec 18 10:55:38.152 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 10:55:38.152 INFO [stderr] 
Dec 18 10:55:38.152 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:55:38.152 INFO [stderr]    --> src/lib.rs:326:13
Dec 18 10:55:38.152 INFO [stderr]     |
Dec 18 10:55:38.152 INFO [stderr] 326 |         let mut assertion = self;
Dec 18 10:55:38.152 INFO [stderr]     |             ----^^^^^^^^^
Dec 18 10:55:38.152 INFO [stderr]     |             |
Dec 18 10:55:38.152 INFO [stderr]     |             help: remove this `mut`
Dec 18 10:55:38.152 INFO [stderr] 
Dec 18 10:55:38.480 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:55:38.480 INFO [stderr]    --> src/lib.rs:318:13
Dec 18 10:55:38.480 INFO [stderr]     |
Dec 18 10:55:38.480 INFO [stderr] 318 |         let mut assertion = self;
Dec 18 10:55:38.480 INFO [stderr]     |             ----^^^^^^^^^
Dec 18 10:55:38.480 INFO [stderr]     |             |
Dec 18 10:55:38.480 INFO [stderr]     |             help: remove this `mut`
Dec 18 10:55:38.480 INFO [stderr]     |
Dec 18 10:55:38.480 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 10:55:38.480 INFO [stderr] 
Dec 18 10:55:38.480 INFO [stderr] warning: variable does not need to be mutable
Dec 18 10:55:38.480 INFO [stderr]    --> src/lib.rs:326:13
Dec 18 10:55:38.480 INFO [stderr]     |
Dec 18 10:55:38.480 INFO [stderr] 326 |         let mut assertion = self;
Dec 18 10:55:38.480 INFO [stderr]     |             ----^^^^^^^^^
Dec 18 10:55:38.480 INFO [stderr]     |             |
Dec 18 10:55:38.480 INFO [stderr]     |             help: remove this `mut`
Dec 18 10:55:38.480 INFO [stderr] 
Dec 18 10:55:38.828 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.25s
Dec 18 10:55:40.201 INFO running `"docker" "inspect" "111bbc736f9d88d024d2f372a89e574223c530343cd41ecb3302943008de08f5"`
Dec 18 10:55:40.602 INFO running `"docker" "rm" "-f" "111bbc736f9d88d024d2f372a89e574223c530343cd41ecb3302943008de08f5"`
Dec 18 10:55:40.932 INFO [stdout] 111bbc736f9d88d024d2f372a89e574223c530343cd41ecb3302943008de08f5