Aug 30 13:11:02.758 INFO checking jec-rccow-0.1.0 against try#bc5a74802bb3ffc82f51ef04bca58d64220124c4 for pr-53699
Aug 30 13:11:02.758 INFO running: cargo +bc5a74802bb3ffc82f51ef04bca58d64220124c4-alt check --frozen --all --all-targets
Aug 30 13:11:02.759 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53699/try#bc5a74802bb3ffc82f51ef04bca58d64220124c4:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53699/worker-1/try#bc5a74802bb3ffc82f51ef04bca58d64220124c4:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +bc5a74802bb3ffc82f51ef04bca58d64220124c4-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 13:11:02.917 INFO blam! afbd5031bbea4593332ecd6be12e507394c3a2d4380ad7c148c29f493478d72b
Aug 30 13:11:02.919 INFO running `"docker" "start" "-a" "afbd5031bbea4593332ecd6be12e507394c3a2d4380ad7c148c29f493478d72b"`
Aug 30 13:11:03.777 INFO kablam!     Checking jec-rccow v0.1.0 (file:///source)
Aug 30 13:11:04.361 INFO kablam! warning: variable does not need to be mutable
Aug 30 13:11:04.361 INFO kablam!   --> src/lib.rs:73:13
Aug 30 13:11:04.361 INFO kablam!    |
Aug 30 13:11:04.361 INFO kablam! 73 |         let mut a = RcCow::new(5i32);
Aug 30 13:11:04.361 INFO kablam!    |             ----^
Aug 30 13:11:04.361 INFO kablam!    |             |
Aug 30 13:11:04.361 INFO kablam!    |             help: remove this `mut`
Aug 30 13:11:04.361 INFO kablam!    |
Aug 30 13:11:04.362 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 13:11:04.362 INFO kablam! 
Aug 30 13:11:04.362 INFO kablam! warning: variable does not need to be mutable
Aug 30 13:11:04.362 INFO kablam!   --> src/lib.rs:77:13
Aug 30 13:11:04.362 INFO kablam!    |
Aug 30 13:11:04.362 INFO kablam! 77 |         let mut c = b.clone();
Aug 30 13:11:04.362 INFO kablam!    |             ----^
Aug 30 13:11:04.362 INFO kablam!    |             |
Aug 30 13:11:04.362 INFO kablam!    |             help: remove this `mut`
Aug 30 13:11:04.362 INFO kablam! 
Aug 30 13:11:04.376 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
Aug 30 13:11:04.380 INFO kablam! su: No module specific data is present
Aug 30 13:11:04.834 INFO running `"docker" "rm" "-f" "afbd5031bbea4593332ecd6be12e507394c3a2d4380ad7c148c29f493478d72b"`
Aug 30 13:11:04.921 INFO blam! afbd5031bbea4593332ecd6be12e507394c3a2d4380ad7c148c29f493478d72b