Nov 28 20:14:07.773 INFO checking puzzle-solver-0.4.1 against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 20:14:07.775 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-7/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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 20:14:08.265 INFO [stdout] 3238ca7dedde2576514c72cb88a4b75940dae82cd5b8df7dcd42b71dbf4e5bb9
Nov 28 20:14:08.268 INFO running `"docker" "start" "-a" "3238ca7dedde2576514c72cb88a4b75940dae82cd5b8df7dcd42b71dbf4e5bb9"`
Nov 28 20:14:09.180 INFO [stderr] usermod: no changes
Nov 28 20:14:09.312 INFO [stderr]     Checking num-rational v0.1.42
Nov 28 20:14:10.188 INFO [stderr]     Checking puzzle-solver v0.4.1 (/source)
Nov 28 20:14:11.213 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:14:11.213 INFO [stderr]    --> src/puzzle.rs:898:21
Nov 28 20:14:11.213 INFO [stderr]     |
Nov 28 20:14:11.214 INFO [stderr] 898 |         let (mut l, mut r) = slice.split_at_mut(b);
Nov 28 20:14:11.214 INFO [stderr]     |                     ----^
Nov 28 20:14:11.214 INFO [stderr]     |                     |
Nov 28 20:14:11.214 INFO [stderr]     |                     help: remove this `mut`
Nov 28 20:14:11.214 INFO [stderr]     |
Nov 28 20:14:11.214 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 20:14:11.215 INFO [stderr] 
Nov 28 20:14:11.215 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:14:11.215 INFO [stderr]    --> src/puzzle.rs:898:14
Nov 28 20:14:11.215 INFO [stderr]     |
Nov 28 20:14:11.216 INFO [stderr] 898 |         let (mut l, mut r) = slice.split_at_mut(b);
Nov 28 20:14:11.217 INFO [stderr]     |              ----^
Nov 28 20:14:11.217 INFO [stderr]     |              |
Nov 28 20:14:11.217 INFO [stderr]     |              help: remove this `mut`
Nov 28 20:14:11.217 INFO [stderr] 
Nov 28 20:14:11.806 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:14:11.806 INFO [stderr]    --> src/puzzle.rs:898:21
Nov 28 20:14:11.807 INFO [stderr]     |
Nov 28 20:14:11.807 INFO [stderr] 898 |         let (mut l, mut r) = slice.split_at_mut(b);
Nov 28 20:14:11.807 INFO [stderr]     |                     ----^
Nov 28 20:14:11.818 INFO [stderr]     |                     |
Nov 28 20:14:11.818 INFO [stderr]     |                     help: remove this `mut`
Nov 28 20:14:11.819 INFO [stderr]     |
Nov 28 20:14:11.819 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 20:14:11.819 INFO [stderr] 
Nov 28 20:14:11.820 INFO [stderr] warning: variable does not need to be mutable
Nov 28 20:14:11.820 INFO [stderr]    --> src/puzzle.rs:898:14
Nov 28 20:14:11.820 INFO [stderr]     |
Nov 28 20:14:11.821 INFO [stderr] 898 |         let (mut l, mut r) = slice.split_at_mut(b);
Nov 28 20:14:11.821 INFO [stderr]     |              ----^
Nov 28 20:14:11.821 INFO [stderr]     |              |
Nov 28 20:14:11.822 INFO [stderr]     |              help: remove this `mut`
Nov 28 20:14:11.822 INFO [stderr] 
Nov 28 20:14:17.561 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.35s
Nov 28 20:14:17.569 INFO [stderr] su: No module specific data is present
Nov 28 20:14:18.086 INFO running `"docker" "inspect" "3238ca7dedde2576514c72cb88a4b75940dae82cd5b8df7dcd42b71dbf4e5bb9"`
Nov 28 20:14:18.470 INFO running `"docker" "rm" "-f" "3238ca7dedde2576514c72cb88a4b75940dae82cd5b8df7dcd42b71dbf4e5bb9"`
Nov 28 20:14:18.934 INFO [stdout] 3238ca7dedde2576514c72cb88a4b75940dae82cd5b8df7dcd42b71dbf4e5bb9