Nov 28 09:14:02.606 INFO checking aschampion/test_image_jpeg against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 09:14:02.607 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-7/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 09:14:02.945 INFO [stdout] c7d4b5a2d8c3179a426a9246218e97377b4ffcbb9a68a9b937540cb562335336
Nov 28 09:14:02.950 INFO running `"docker" "start" "-a" "c7d4b5a2d8c3179a426a9246218e97377b4ffcbb9a68a9b937540cb562335336"`
Nov 28 09:14:04.005 INFO [stderr] usermod: no changes
Nov 28 09:14:04.140 INFO [stderr]     Checking test_image_jpeg v0.1.0 (/source)
Nov 28 09:14:06.837 INFO [stderr] warning: variable does not need to be mutable
Nov 28 09:14:06.837 INFO [stderr]   --> src/main.rs:24:13
Nov 28 09:14:06.837 INFO [stderr]    |
Nov 28 09:14:06.837 INFO [stderr] 24 |         let mut encoder = image::png::PNGEncoder::new(&mut writer);
Nov 28 09:14:06.837 INFO [stderr]    |             ----^^^^^^^
Nov 28 09:14:06.837 INFO [stderr]    |             |
Nov 28 09:14:06.837 INFO [stderr]    |             help: remove this `mut`
Nov 28 09:14:06.837 INFO [stderr]    |
Nov 28 09:14:06.837 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 09:14:06.837 INFO [stderr] 
Nov 28 09:14:06.973 INFO [stderr] warning: variable does not need to be mutable
Nov 28 09:14:06.973 INFO [stderr]   --> src/main.rs:24:13
Nov 28 09:14:06.973 INFO [stderr]    |
Nov 28 09:14:06.974 INFO [stderr] 24 |         let mut encoder = image::png::PNGEncoder::new(&mut writer);
Nov 28 09:14:06.974 INFO [stderr]    |             ----^^^^^^^
Nov 28 09:14:06.974 INFO [stderr]    |             |
Nov 28 09:14:06.974 INFO [stderr]    |             help: remove this `mut`
Nov 28 09:14:06.975 INFO [stderr]    |
Nov 28 09:14:06.975 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 09:14:06.975 INFO [stderr] 
Nov 28 09:14:07.012 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.95s
Nov 28 09:14:07.013 INFO [stderr] su: No module specific data is present
Nov 28 09:14:07.514 INFO running `"docker" "inspect" "c7d4b5a2d8c3179a426a9246218e97377b4ffcbb9a68a9b937540cb562335336"`
Nov 28 09:14:07.742 INFO running `"docker" "rm" "-f" "c7d4b5a2d8c3179a426a9246218e97377b4ffcbb9a68a9b937540cb562335336"`
Nov 28 09:14:08.121 INFO [stdout] c7d4b5a2d8c3179a426a9246218e97377b4ffcbb9a68a9b937540cb562335336