Aug 30 13:37:47.451 INFO checking jec-rccow-0.1.0 against master#ede55518431154bc761f7b2438cce9078c162700 for pr-53707
Aug 30 13:37:47.451 INFO running: cargo +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets
Aug 30 13:37:47.451 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53707/master#ede55518431154bc761f7b2438cce9078c162700:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53707/worker-2/master#ede55518431154bc761f7b2438cce9078c162700:/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 +ede55518431154bc761f7b2438cce9078c162700-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 30 13:37:47.594 INFO blam! e9b39ed5cd90da1793c82d1725576f5405fd2e6a578d177dc80558f922c79af6
Aug 30 13:37:47.596 INFO running `"docker" "start" "-a" "e9b39ed5cd90da1793c82d1725576f5405fd2e6a578d177dc80558f922c79af6"`
Aug 30 13:37:48.315 INFO kablam!     Checking jec-rccow v0.1.0 (file:///source)
Aug 30 13:37:48.866 INFO kablam! warning: variable does not need to be mutable
Aug 30 13:37:48.866 INFO kablam!   --> src/lib.rs:73:13
Aug 30 13:37:48.866 INFO kablam!    |
Aug 30 13:37:48.866 INFO kablam! 73 |         let mut a = RcCow::new(5i32);
Aug 30 13:37:48.866 INFO kablam!    |             ----^
Aug 30 13:37:48.866 INFO kablam!    |             |
Aug 30 13:37:48.866 INFO kablam!    |             help: remove this `mut`
Aug 30 13:37:48.866 INFO kablam!    |
Aug 30 13:37:48.866 INFO kablam!    = note: #[warn(unused_mut)] on by default
Aug 30 13:37:48.866 INFO kablam! 
Aug 30 13:37:48.866 INFO kablam! warning: variable does not need to be mutable
Aug 30 13:37:48.866 INFO kablam!   --> src/lib.rs:77:13
Aug 30 13:37:48.867 INFO kablam!    |
Aug 30 13:37:48.867 INFO kablam! 77 |         let mut c = b.clone();
Aug 30 13:37:48.867 INFO kablam!    |             ----^
Aug 30 13:37:48.867 INFO kablam!    |             |
Aug 30 13:37:48.867 INFO kablam!    |             help: remove this `mut`
Aug 30 13:37:48.867 INFO kablam! 
Aug 30 13:37:48.878 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Aug 30 13:37:48.880 INFO kablam! su: No module specific data is present
Aug 30 13:37:49.317 INFO running `"docker" "rm" "-f" "e9b39ed5cd90da1793c82d1725576f5405fd2e6a578d177dc80558f922c79af6"`
Aug 30 13:37:49.457 INFO blam! e9b39ed5cd90da1793c82d1725576f5405fd2e6a578d177dc80558f922c79af6