Dec 18 03:48:10.861 INFO checking aschampion/test_image_jpeg against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 03:48:10.861 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/aschampion/test_image_jpeg:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 03:48:11.092 INFO [stdout] e17c8e98464fa8f4d900c44eb25adeecb0a6afc19c86793d3d3f6c13a4c3ca05
Dec 18 03:48:11.098 INFO running `"docker" "start" "-a" "e17c8e98464fa8f4d900c44eb25adeecb0a6afc19c86793d3d3f6c13a4c3ca05"`
Dec 18 03:48:12.070 INFO [stderr]     Checking num-integer v0.1.36
Dec 18 03:48:12.088 INFO [stderr]     Checking jpeg-decoder v0.1.14
Dec 18 03:48:12.653 INFO [stderr]     Checking num-iter v0.1.35
Dec 18 03:48:12.654 INFO [stderr]     Checking num-rational v0.1.42
Dec 18 03:48:12.927 INFO [stderr]     Checking png v0.11.0
Dec 18 03:48:14.253 INFO [stderr]     Checking image v0.18.0
Dec 18 03:48:18.948 INFO [stderr]     Checking test_image_jpeg v0.1.0 (/opt/crater/workdir)
Dec 18 03:48:20.000 INFO [stderr] warning: variable does not need to be mutable
Dec 18 03:48:20.000 INFO [stderr]   --> src/main.rs:24:13
Dec 18 03:48:20.000 INFO [stderr]    |
Dec 18 03:48:20.000 INFO [stderr] 24 |         let mut encoder = image::png::PNGEncoder::new(&mut writer);
Dec 18 03:48:20.000 INFO [stderr]    |             ----^^^^^^^
Dec 18 03:48:20.000 INFO [stderr]    |             |
Dec 18 03:48:20.000 INFO [stderr]    |             help: remove this `mut`
Dec 18 03:48:20.000 INFO [stderr]    |
Dec 18 03:48:20.000 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 03:48:20.000 INFO [stderr] 
Dec 18 03:48:20.080 INFO [stderr] warning: variable does not need to be mutable
Dec 18 03:48:20.080 INFO [stderr]   --> src/main.rs:24:13
Dec 18 03:48:20.080 INFO [stderr]    |
Dec 18 03:48:20.080 INFO [stderr] 24 |         let mut encoder = image::png::PNGEncoder::new(&mut writer);
Dec 18 03:48:20.080 INFO [stderr]    |             ----^^^^^^^
Dec 18 03:48:20.080 INFO [stderr]    |             |
Dec 18 03:48:20.080 INFO [stderr]    |             help: remove this `mut`
Dec 18 03:48:20.080 INFO [stderr]    |
Dec 18 03:48:20.080 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 03:48:20.080 INFO [stderr] 
Dec 18 03:48:20.136 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.16s
Dec 18 03:48:21.301 INFO running `"docker" "inspect" "e17c8e98464fa8f4d900c44eb25adeecb0a6afc19c86793d3d3f6c13a4c3ca05"`
Dec 18 03:48:21.578 INFO running `"docker" "rm" "-f" "e17c8e98464fa8f4d900c44eb25adeecb0a6afc19c86793d3d3f6c13a4c3ca05"`
Dec 18 03:48:21.883 INFO [stdout] e17c8e98464fa8f4d900c44eb25adeecb0a6afc19c86793d3d3f6c13a4c3ca05