Nov 30 23:01:31.446 INFO checking file_diff-1.0.0 against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 23:01:31.446 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-2/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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"`
Nov 30 23:01:31.602 INFO [stdout] 7b11a1719b80d03f511a9a6dbb51efc191fae13db5f0c0d6364e307cc445b28d
Nov 30 23:01:31.606 INFO running `"docker" "start" "-a" "7b11a1719b80d03f511a9a6dbb51efc191fae13db5f0c0d6364e307cc445b28d"`
Nov 30 23:01:32.488 INFO [stderr] usermod: no changes
Nov 30 23:01:32.528 INFO [stderr]     Checking file_diff v1.0.0 (/source)
Nov 30 23:01:33.049 INFO [stderr] warning: variable does not need to be mutable
Nov 30 23:01:33.049 INFO [stderr]   --> src/lib.rs:49:9
Nov 30 23:01:33.049 INFO [stderr]    |
Nov 30 23:01:33.049 INFO [stderr] 49 |     let mut buff1 : &mut [u8] = &mut [0; 1024];
Nov 30 23:01:33.049 INFO [stderr]    |         ----^^^^^
Nov 30 23:01:33.049 INFO [stderr]    |         |
Nov 30 23:01:33.049 INFO [stderr]    |         help: remove this `mut`
Nov 30 23:01:33.049 INFO [stderr]    |
Nov 30 23:01:33.049 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 23:01:33.049 INFO [stderr] 
Nov 30 23:01:33.049 INFO [stderr] warning: variable does not need to be mutable
Nov 30 23:01:33.049 INFO [stderr]   --> src/lib.rs:50:9
Nov 30 23:01:33.049 INFO [stderr]    |
Nov 30 23:01:33.049 INFO [stderr] 50 |     let mut buff2 : &mut [u8] = &mut [0; 1024];
Nov 30 23:01:33.049 INFO [stderr]    |         ----^^^^^
Nov 30 23:01:33.049 INFO [stderr]    |         |
Nov 30 23:01:33.049 INFO [stderr]    |         help: remove this `mut`
Nov 30 23:01:33.050 INFO [stderr] 
Nov 30 23:01:33.194 INFO [stderr] warning: variable does not need to be mutable
Nov 30 23:01:33.194 INFO [stderr]   --> src/lib.rs:49:9
Nov 30 23:01:33.194 INFO [stderr]    |
Nov 30 23:01:33.194 INFO [stderr] 49 |     let mut buff1 : &mut [u8] = &mut [0; 1024];
Nov 30 23:01:33.194 INFO [stderr]    |         ----^^^^^
Nov 30 23:01:33.194 INFO [stderr]    |         |
Nov 30 23:01:33.194 INFO [stderr]    |         help: remove this `mut`
Nov 30 23:01:33.194 INFO [stderr]    |
Nov 30 23:01:33.194 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 23:01:33.194 INFO [stderr] 
Nov 30 23:01:33.194 INFO [stderr] warning: variable does not need to be mutable
Nov 30 23:01:33.195 INFO [stderr]   --> src/lib.rs:50:9
Nov 30 23:01:33.195 INFO [stderr]    |
Nov 30 23:01:33.195 INFO [stderr] 50 |     let mut buff2 : &mut [u8] = &mut [0; 1024];
Nov 30 23:01:33.195 INFO [stderr]    |         ----^^^^^
Nov 30 23:01:33.195 INFO [stderr]    |         |
Nov 30 23:01:33.195 INFO [stderr]    |         help: remove this `mut`
Nov 30 23:01:33.195 INFO [stderr] 
Nov 30 23:01:33.214 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Nov 30 23:01:33.214 INFO [stderr] su: No module specific data is present
Nov 30 23:01:33.590 INFO running `"docker" "inspect" "7b11a1719b80d03f511a9a6dbb51efc191fae13db5f0c0d6364e307cc445b28d"`
Nov 30 23:01:33.804 INFO running `"docker" "rm" "-f" "7b11a1719b80d03f511a9a6dbb51efc191fae13db5f0c0d6364e307cc445b28d"`
Nov 30 23:01:34.089 INFO [stdout] 7b11a1719b80d03f511a9a6dbb51efc191fae13db5f0c0d6364e307cc445b28d