Sep 21 08:16:53.112 INFO checking jec-rccow-0.1.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 08:16:53.112 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 08:16:53.112 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-5/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-5/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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=1000" "-e" "CMD=cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 08:16:53.311 INFO blam! 46ef9e584040759c1ea16c5f4693008b68f35720b5137f4ba19a197f1dc5c530
Sep 21 08:16:53.313 INFO running `"docker" "start" "-a" "46ef9e584040759c1ea16c5f4693008b68f35720b5137f4ba19a197f1dc5c530"`
Sep 21 08:16:54.679 INFO kablam! usermod: no changes
Sep 21 08:16:54.726 INFO kablam!     Checking jec-rccow v0.1.0 (/source)
Sep 21 08:16:55.309 INFO kablam! warning: variable does not need to be mutable
Sep 21 08:16:55.309 INFO kablam!   --> src/lib.rs:73:13
Sep 21 08:16:55.309 INFO kablam!    |
Sep 21 08:16:55.309 INFO kablam! 73 |         let mut a = RcCow::new(5i32);
Sep 21 08:16:55.310 INFO kablam!    |             ----^
Sep 21 08:16:55.310 INFO kablam!    |             |
Sep 21 08:16:55.310 INFO kablam!    |             help: remove this `mut`
Sep 21 08:16:55.310 INFO kablam!    |
Sep 21 08:16:55.310 INFO kablam!    = note: #[warn(unused_mut)] on by default
Sep 21 08:16:55.310 INFO kablam! 
Sep 21 08:16:55.310 INFO kablam! warning: variable does not need to be mutable
Sep 21 08:16:55.310 INFO kablam!   --> src/lib.rs:77:13
Sep 21 08:16:55.310 INFO kablam!    |
Sep 21 08:16:55.310 INFO kablam! 77 |         let mut c = b.clone();
Sep 21 08:16:55.310 INFO kablam!    |             ----^
Sep 21 08:16:55.310 INFO kablam!    |             |
Sep 21 08:16:55.310 INFO kablam!    |             help: remove this `mut`
Sep 21 08:16:55.310 INFO kablam! 
Sep 21 08:16:55.338 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
Sep 21 08:16:55.340 INFO kablam! su: No module specific data is present
Sep 21 08:16:56.259 INFO running `"docker" "rm" "-f" "46ef9e584040759c1ea16c5f4693008b68f35720b5137f4ba19a197f1dc5c530"`
Sep 21 08:16:56.377 INFO blam! 46ef9e584040759c1ea16c5f4693008b68f35720b5137f4ba19a197f1dc5c530