Oct 27 12:36:05.743 INFO checking Bkindmonk/RustPractice against try#19f01b935b91481fd445b16b533d2f87661bf12e for pr-55192-2
Oct 27 12:36:05.743 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-55192-2/worker-4/try#19f01b935b91481fd445b16b533d2f87661bf12e:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-4/pr-55192-2/try#19f01b935b91481fd445b16b533d2f87661bf12e:/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 +19f01b935b91481fd445b16b533d2f87661bf12e-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 27 12:36:06.155 INFO blam! 2605cc82f62a5720ae07f19a1d0898c81e70235423f0c58b3c77b31e914519ab
Oct 27 12:36:06.161 INFO running `"docker" "start" "-a" "2605cc82f62a5720ae07f19a1d0898c81e70235423f0c58b3c77b31e914519ab"`
Oct 27 12:36:08.387 INFO kablam! usermod: no changes
Oct 27 12:36:08.467 INFO kablam!     Checking mergesort v0.1.0 (/source)
Oct 27 12:36:09.583 INFO kablam! warning: variable does not need to be mutable
Oct 27 12:36:09.583 INFO kablam!   --> src/main.rs:91:13
Oct 27 12:36:09.583 INFO kablam!    |
Oct 27 12:36:09.583 INFO kablam! 91 |         let mut realhalves = (*real).split_at_mut(halflength);
Oct 27 12:36:09.583 INFO kablam!    |             ----^^^^^^^^^^
Oct 27 12:36:09.583 INFO kablam!    |             |
Oct 27 12:36:09.583 INFO kablam!    |             help: remove this `mut`
Oct 27 12:36:09.583 INFO kablam!    |
Oct 27 12:36:09.583 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 27 12:36:09.583 INFO kablam! 
Oct 27 12:36:09.583 INFO kablam! warning: variable does not need to be mutable
Oct 27 12:36:09.583 INFO kablam!   --> src/main.rs:92:13
Oct 27 12:36:09.583 INFO kablam!    |
Oct 27 12:36:09.583 INFO kablam! 92 |         let mut scratchhalves = (*scratch).split_at_mut(halflength);
Oct 27 12:36:09.583 INFO kablam!    |             ----^^^^^^^^^^^^^
Oct 27 12:36:09.583 INFO kablam!    |             |
Oct 27 12:36:09.583 INFO kablam!    |             help: remove this `mut`
Oct 27 12:36:09.583 INFO kablam! 
Oct 27 12:36:09.791 INFO kablam! warning: variable does not need to be mutable
Oct 27 12:36:09.791 INFO kablam!   --> src/main.rs:91:13
Oct 27 12:36:09.791 INFO kablam!    |
Oct 27 12:36:09.791 INFO kablam! 91 |         let mut realhalves = (*real).split_at_mut(halflength);
Oct 27 12:36:09.791 INFO kablam!    |             ----^^^^^^^^^^
Oct 27 12:36:09.791 INFO kablam!    |             |
Oct 27 12:36:09.791 INFO kablam!    |             help: remove this `mut`
Oct 27 12:36:09.791 INFO kablam!    |
Oct 27 12:36:09.791 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 27 12:36:09.791 INFO kablam! 
Oct 27 12:36:09.791 INFO kablam! warning: variable does not need to be mutable
Oct 27 12:36:09.791 INFO kablam!   --> src/main.rs:92:13
Oct 27 12:36:09.791 INFO kablam!    |
Oct 27 12:36:09.791 INFO kablam! 92 |         let mut scratchhalves = (*scratch).split_at_mut(halflength);
Oct 27 12:36:09.791 INFO kablam!    |             ----^^^^^^^^^^^^^
Oct 27 12:36:09.791 INFO kablam!    |             |
Oct 27 12:36:09.791 INFO kablam!    |             help: remove this `mut`
Oct 27 12:36:09.791 INFO kablam! 
Oct 27 12:36:09.836 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
Oct 27 12:36:09.839 INFO kablam! su: No module specific data is present
Oct 27 12:36:10.674 INFO running `"docker" "rm" "-f" "2605cc82f62a5720ae07f19a1d0898c81e70235423f0c58b3c77b31e914519ab"`
Oct 27 12:36:10.935 INFO blam! 2605cc82f62a5720ae07f19a1d0898c81e70235423f0c58b3c77b31e914519ab