Oct 13 13:13:30.903 INFO checking jec-rccow-0.1.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 13:13:30.904 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 13 13:13:31.117 INFO blam! 472d98a1db1ca00a5ff13569779d7c4fb4aee1274d8bef040cfecab5d5b0377c
Oct 13 13:13:31.124 INFO running `"docker" "start" "-a" "472d98a1db1ca00a5ff13569779d7c4fb4aee1274d8bef040cfecab5d5b0377c"`
Oct 13 13:13:31.596 INFO kablam! usermod: no changes
Oct 13 13:13:31.641 INFO kablam!     Checking jec-rccow v0.1.0 (/source)
Oct 13 13:13:32.420 INFO kablam! warning: variable does not need to be mutable
Oct 13 13:13:32.420 INFO kablam!   --> src/lib.rs:73:13
Oct 13 13:13:32.420 INFO kablam!    |
Oct 13 13:13:32.420 INFO kablam! 73 |         let mut a = RcCow::new(5i32);
Oct 13 13:13:32.420 INFO kablam!    |             ----^
Oct 13 13:13:32.420 INFO kablam!    |             |
Oct 13 13:13:32.420 INFO kablam!    |             help: remove this `mut`
Oct 13 13:13:32.420 INFO kablam!    |
Oct 13 13:13:32.420 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 13:13:32.420 INFO kablam! 
Oct 13 13:13:32.420 INFO kablam! warning: variable does not need to be mutable
Oct 13 13:13:32.420 INFO kablam!   --> src/lib.rs:77:13
Oct 13 13:13:32.420 INFO kablam!    |
Oct 13 13:13:32.420 INFO kablam! 77 |         let mut c = b.clone();
Oct 13 13:13:32.420 INFO kablam!    |             ----^
Oct 13 13:13:32.420 INFO kablam!    |             |
Oct 13 13:13:32.420 INFO kablam!    |             help: remove this `mut`
Oct 13 13:13:32.420 INFO kablam! 
Oct 13 13:13:32.444 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
Oct 13 13:13:32.446 INFO kablam! su: No module specific data is present
Oct 13 13:13:32.776 INFO running `"docker" "rm" "-f" "472d98a1db1ca00a5ff13569779d7c4fb4aee1274d8bef040cfecab5d5b0377c"`
Oct 13 13:13:32.880 INFO blam! 472d98a1db1ca00a5ff13569779d7c4fb4aee1274d8bef040cfecab5d5b0377c