Nov 28 14:24:50.121 INFO checking Bkindmonk/RustPractice against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 14:24:50.121 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-3/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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 28 14:24:50.477 INFO [stdout] dff12936057613ba3f0a2a54b4bc6f1c199dbd106b63aef8557668e77c46e559
Nov 28 14:24:50.479 INFO running `"docker" "start" "-a" "dff12936057613ba3f0a2a54b4bc6f1c199dbd106b63aef8557668e77c46e559"`
Nov 28 14:24:52.539 INFO [stderr] usermod: no changes
Nov 28 14:24:52.628 INFO [stderr]     Checking mergesort v0.1.0 (/source)
Nov 28 14:24:53.173 INFO [stderr] warning: variable does not need to be mutable
Nov 28 14:24:53.173 INFO [stderr]   --> src/main.rs:91:13
Nov 28 14:24:53.173 INFO [stderr]    |
Nov 28 14:24:53.173 INFO [stderr] 91 |         let mut realhalves = (*real).split_at_mut(halflength);
Nov 28 14:24:53.173 INFO [stderr]    |             ----^^^^^^^^^^
Nov 28 14:24:53.173 INFO [stderr]    |             |
Nov 28 14:24:53.173 INFO [stderr]    |             help: remove this `mut`
Nov 28 14:24:53.173 INFO [stderr]    |
Nov 28 14:24:53.173 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 14:24:53.173 INFO [stderr] 
Nov 28 14:24:53.173 INFO [stderr] warning: variable does not need to be mutable
Nov 28 14:24:53.173 INFO [stderr]   --> src/main.rs:92:13
Nov 28 14:24:53.173 INFO [stderr]    |
Nov 28 14:24:53.173 INFO [stderr] 92 |         let mut scratchhalves = (*scratch).split_at_mut(halflength);
Nov 28 14:24:53.173 INFO [stderr]    |             ----^^^^^^^^^^^^^
Nov 28 14:24:53.173 INFO [stderr]    |             |
Nov 28 14:24:53.173 INFO [stderr]    |             help: remove this `mut`
Nov 28 14:24:53.173 INFO [stderr] 
Nov 28 14:24:53.559 INFO [stderr] warning: variable does not need to be mutable
Nov 28 14:24:53.559 INFO [stderr]   --> src/main.rs:91:13
Nov 28 14:24:53.559 INFO [stderr]    |
Nov 28 14:24:53.559 INFO [stderr] 91 |         let mut realhalves = (*real).split_at_mut(halflength);
Nov 28 14:24:53.559 INFO [stderr]    |             ----^^^^^^^^^^
Nov 28 14:24:53.559 INFO [stderr]    |             |
Nov 28 14:24:53.559 INFO [stderr]    |             help: remove this `mut`
Nov 28 14:24:53.559 INFO [stderr]    |
Nov 28 14:24:53.559 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 14:24:53.559 INFO [stderr] 
Nov 28 14:24:53.559 INFO [stderr] warning: variable does not need to be mutable
Nov 28 14:24:53.559 INFO [stderr]   --> src/main.rs:92:13
Nov 28 14:24:53.559 INFO [stderr]    |
Nov 28 14:24:53.559 INFO [stderr] 92 |         let mut scratchhalves = (*scratch).split_at_mut(halflength);
Nov 28 14:24:53.559 INFO [stderr]    |             ----^^^^^^^^^^^^^
Nov 28 14:24:53.559 INFO [stderr]    |             |
Nov 28 14:24:53.559 INFO [stderr]    |             help: remove this `mut`
Nov 28 14:24:53.559 INFO [stderr] 
Nov 28 14:24:53.600 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
Nov 28 14:24:53.600 INFO [stderr] su: No module specific data is present
Nov 28 14:24:54.138 INFO running `"docker" "inspect" "dff12936057613ba3f0a2a54b4bc6f1c199dbd106b63aef8557668e77c46e559"`
Nov 28 14:24:54.422 INFO running `"docker" "rm" "-f" "dff12936057613ba3f0a2a54b4bc6f1c199dbd106b63aef8557668e77c46e559"`
Nov 28 14:24:54.774 INFO [stdout] dff12936057613ba3f0a2a54b4bc6f1c199dbd106b63aef8557668e77c46e559