Oct 13 15:20:34.420 INFO checking file_diff-1.0.0 against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 13 15:20:34.422 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-5/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-5/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 15:20:34.816 INFO blam! 7050aef3692c6f0776d72b9a9d95663eb42e58ac535f916f6f40f065d1452774
Oct 13 15:20:34.832 INFO running `"docker" "start" "-a" "7050aef3692c6f0776d72b9a9d95663eb42e58ac535f916f6f40f065d1452774"`
Oct 13 15:20:35.448 INFO kablam! usermod: no changes
Oct 13 15:20:35.501 INFO kablam!     Checking file_diff v1.0.0 (/source)
Oct 13 15:20:36.074 INFO kablam! warning: variable does not need to be mutable
Oct 13 15:20:36.074 INFO kablam!   --> src/lib.rs:49:9
Oct 13 15:20:36.074 INFO kablam!    |
Oct 13 15:20:36.074 INFO kablam! 49 |     let mut buff1 : &mut [u8] = &mut [0; 1024];
Oct 13 15:20:36.074 INFO kablam!    |         ----^^^^^
Oct 13 15:20:36.074 INFO kablam!    |         |
Oct 13 15:20:36.074 INFO kablam!    |         help: remove this `mut`
Oct 13 15:20:36.074 INFO kablam!    |
Oct 13 15:20:36.074 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 15:20:36.074 INFO kablam! 
Oct 13 15:20:36.074 INFO kablam! warning: variable does not need to be mutable
Oct 13 15:20:36.074 INFO kablam!   --> src/lib.rs:50:9
Oct 13 15:20:36.074 INFO kablam!    |
Oct 13 15:20:36.074 INFO kablam! 50 |     let mut buff2 : &mut [u8] = &mut [0; 1024];
Oct 13 15:20:36.074 INFO kablam!    |         ----^^^^^
Oct 13 15:20:36.074 INFO kablam!    |         |
Oct 13 15:20:36.074 INFO kablam!    |         help: remove this `mut`
Oct 13 15:20:36.074 INFO kablam! 
Oct 13 15:20:36.479 INFO kablam! warning: variable does not need to be mutable
Oct 13 15:20:36.479 INFO kablam!   --> src/lib.rs:49:9
Oct 13 15:20:36.479 INFO kablam!    |
Oct 13 15:20:36.479 INFO kablam! 49 |     let mut buff1 : &mut [u8] = &mut [0; 1024];
Oct 13 15:20:36.479 INFO kablam!    |         ----^^^^^
Oct 13 15:20:36.479 INFO kablam!    |         |
Oct 13 15:20:36.479 INFO kablam!    |         help: remove this `mut`
Oct 13 15:20:36.479 INFO kablam!    |
Oct 13 15:20:36.479 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 13 15:20:36.479 INFO kablam! 
Oct 13 15:20:36.479 INFO kablam! warning: variable does not need to be mutable
Oct 13 15:20:36.479 INFO kablam!   --> src/lib.rs:50:9
Oct 13 15:20:36.479 INFO kablam!    |
Oct 13 15:20:36.479 INFO kablam! 50 |     let mut buff2 : &mut [u8] = &mut [0; 1024];
Oct 13 15:20:36.479 INFO kablam!    |         ----^^^^^
Oct 13 15:20:36.479 INFO kablam!    |         |
Oct 13 15:20:36.479 INFO kablam!    |         help: remove this `mut`
Oct 13 15:20:36.479 INFO kablam! 
Oct 13 15:20:36.502 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
Oct 13 15:20:36.508 INFO kablam! su: No module specific data is present
Oct 13 15:20:37.000 INFO running `"docker" "rm" "-f" "7050aef3692c6f0776d72b9a9d95663eb42e58ac535f916f6f40f065d1452774"`
Oct 13 15:20:37.088 INFO blam! 7050aef3692c6f0776d72b9a9d95663eb42e58ac535f916f6f40f065d1452774