Aug 31 23:56:54.518 INFO checking jec-rccow-0.1.0 against try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b for pr-53578
Aug 31 23:56:54.518 INFO running: cargo +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets
Aug 31 23:56:54.519 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53578/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-3/try#a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b:/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 +a5b9f2cc0cdaca8edf23a89c649279de2c91cd3b-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 23:56:54.702 INFO blam! aef93cd550829b18b1c1efee1d27b8d0d5a2db2ef681d616f5481a5f11bbaeb9
Aug 31 23:56:54.704 INFO running `"docker" "start" "-a" "aef93cd550829b18b1c1efee1d27b8d0d5a2db2ef681d616f5481a5f11bbaeb9"`
Aug 31 23:56:55.465 INFO kablam!     Checking jec-rccow v0.1.0 (file:///source)
Aug 31 23:56:56.106 INFO kablam! warning: variable does not need to be mutable
Aug 31 23:56:56.106 INFO kablam!   --> src/lib.rs:73:13
Aug 31 23:56:56.106 INFO kablam!    |
Aug 31 23:56:56.107 INFO kablam! 73 |         let mut a = RcCow::new(5i32);
Aug 31 23:56:56.107 INFO kablam!    |             ----^
Aug 31 23:56:56.107 INFO kablam!    |             |
Aug 31 23:56:56.107 INFO kablam!    |             help: remove this `mut`
Aug 31 23:56:56.107 INFO kablam!    |
Aug 31 23:56:56.107 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 31 23:56:56.107 INFO kablam! 
Aug 31 23:56:56.107 INFO kablam! warning: variable does not need to be mutable
Aug 31 23:56:56.107 INFO kablam!   --> src/lib.rs:77:13
Aug 31 23:56:56.107 INFO kablam!    |
Aug 31 23:56:56.107 INFO kablam! 77 |         let mut c = b.clone();
Aug 31 23:56:56.107 INFO kablam!    |             ----^
Aug 31 23:56:56.107 INFO kablam!    |             |
Aug 31 23:56:56.107 INFO kablam!    |             help: remove this `mut`
Aug 31 23:56:56.107 INFO kablam! 
Aug 31 23:56:56.121 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
Aug 31 23:56:56.123 INFO kablam! su: No module specific data is present
Aug 31 23:56:56.593 INFO running `"docker" "rm" "-f" "aef93cd550829b18b1c1efee1d27b8d0d5a2db2ef681d616f5481a5f11bbaeb9"`
Aug 31 23:56:56.692 INFO blam! aef93cd550829b18b1c1efee1d27b8d0d5a2db2ef681d616f5481a5f11bbaeb9