Nov 02 17:59:13.211 INFO checking aschampion/test_image_jpeg against try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7 for pr-55517
Nov 02 17:59:13.212 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55517/worker-3/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-55517/try#dc8b02d6f1e93f212fc39844ea688b634b4a03c7:/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 +dc8b02d6f1e93f212fc39844ea688b634b4a03c7-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 02 17:59:13.512 INFO blam! 92bfb56f6af5ed5574fa52930940bdd65b563f714cc9085476a14295b0942b2e
Nov 02 17:59:13.514 INFO running `"docker" "start" "-a" "92bfb56f6af5ed5574fa52930940bdd65b563f714cc9085476a14295b0942b2e"`
Nov 02 17:59:14.072 INFO kablam! usermod: no changes
Nov 02 17:59:14.167 INFO kablam!     Checking test_image_jpeg v0.1.0 (/source)
Nov 02 17:59:16.692 INFO kablam! warning: variable does not need to be mutable
Nov 02 17:59:16.692 INFO kablam!   --> src/main.rs:24:13
Nov 02 17:59:16.692 INFO kablam!    |
Nov 02 17:59:16.692 INFO kablam! 24 |         let mut encoder = image::png::PNGEncoder::new(&mut writer);
Nov 02 17:59:16.692 INFO kablam!    |             ----^^^^^^^
Nov 02 17:59:16.692 INFO kablam!    |             |
Nov 02 17:59:16.692 INFO kablam!    |             help: remove this `mut`
Nov 02 17:59:16.692 INFO kablam!    |
Nov 02 17:59:16.692 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 02 17:59:16.692 INFO kablam! 
Nov 02 17:59:16.840 INFO kablam! warning: variable does not need to be mutable
Nov 02 17:59:16.840 INFO kablam!   --> src/main.rs:24:13
Nov 02 17:59:16.840 INFO kablam!    |
Nov 02 17:59:16.840 INFO kablam! 24 |         let mut encoder = image::png::PNGEncoder::new(&mut writer);
Nov 02 17:59:16.840 INFO kablam!    |             ----^^^^^^^
Nov 02 17:59:16.840 INFO kablam!    |             |
Nov 02 17:59:16.840 INFO kablam!    |             help: remove this `mut`
Nov 02 17:59:16.840 INFO kablam!    |
Nov 02 17:59:16.840 INFO kablam!    = note: #[warn(unused_mut)] on by default
Nov 02 17:59:16.840 INFO kablam! 
Nov 02 17:59:16.889 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.80s
Nov 02 17:59:16.904 INFO kablam! su: No module specific data is present
Nov 02 17:59:17.683 INFO running `"docker" "rm" "-f" "92bfb56f6af5ed5574fa52930940bdd65b563f714cc9085476a14295b0942b2e"`
Nov 02 17:59:17.861 INFO blam! 92bfb56f6af5ed5574fa52930940bdd65b563f714cc9085476a14295b0942b2e