Dec 06 15:27:09.556 INFO testing Bkindmonk/RustPractice against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 06 15:27:09.556 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-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"`
Dec 06 15:27:10.193 INFO [stdout] 42afababbc56728999b4f310074e37ab67fed38c564c21d3ffeb2ea343c4d08f
Dec 06 15:27:10.195 INFO running `"docker" "start" "-a" "42afababbc56728999b4f310074e37ab67fed38c564c21d3ffeb2ea343c4d08f"`
Dec 06 15:27:11.684 INFO [stderr] usermod: no changes
Dec 06 15:27:11.728 INFO [stderr]    Compiling mergesort v0.1.0 (/source)
Dec 06 15:27:12.314 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:27:12.314 INFO [stderr]   --> src/main.rs:91:13
Dec 06 15:27:12.314 INFO [stderr]    |
Dec 06 15:27:12.314 INFO [stderr] 91 |         let mut realhalves = (*real).split_at_mut(halflength);
Dec 06 15:27:12.314 INFO [stderr]    |             ----^^^^^^^^^^
Dec 06 15:27:12.314 INFO [stderr]    |             |
Dec 06 15:27:12.314 INFO [stderr]    |             help: remove this `mut`
Dec 06 15:27:12.314 INFO [stderr]    |
Dec 06 15:27:12.315 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 15:27:12.315 INFO [stderr] 
Dec 06 15:27:12.315 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:27:12.315 INFO [stderr]   --> src/main.rs:92:13
Dec 06 15:27:12.315 INFO [stderr]    |
Dec 06 15:27:12.315 INFO [stderr] 92 |         let mut scratchhalves = (*scratch).split_at_mut(halflength);
Dec 06 15:27:12.315 INFO [stderr]    |             ----^^^^^^^^^^^^^
Dec 06 15:27:12.315 INFO [stderr]    |             |
Dec 06 15:27:12.315 INFO [stderr]    |             help: remove this `mut`
Dec 06 15:27:12.315 INFO [stderr] 
Dec 06 15:27:13.048 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
Dec 06 15:27:13.063 INFO [stderr] su: No module specific data is present
Dec 06 15:27:13.580 INFO running `"docker" "inspect" "42afababbc56728999b4f310074e37ab67fed38c564c21d3ffeb2ea343c4d08f"`
Dec 06 15:27:13.940 INFO running `"docker" "rm" "-f" "42afababbc56728999b4f310074e37ab67fed38c564c21d3ffeb2ea343c4d08f"`
Dec 06 15:27:14.208 INFO [stdout] 42afababbc56728999b4f310074e37ab67fed38c564c21d3ffeb2ea343c4d08f
Dec 06 15:27:14.220 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen --no-run" "-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"`
Dec 06 15:27:14.717 INFO [stdout] d13b44e9bab09d15e2b8e952df8e7d5867eee0298b58a84ecbfffd7086ad33e4
Dec 06 15:27:14.719 INFO running `"docker" "start" "-a" "d13b44e9bab09d15e2b8e952df8e7d5867eee0298b58a84ecbfffd7086ad33e4"`
Dec 06 15:27:16.356 INFO [stderr] usermod: no changes
Dec 06 15:27:16.424 INFO [stderr]    Compiling mergesort v0.1.0 (/source)
Dec 06 15:27:17.109 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:27:17.109 INFO [stderr]   --> src/main.rs:91:13
Dec 06 15:27:17.109 INFO [stderr]    |
Dec 06 15:27:17.109 INFO [stderr] 91 |         let mut realhalves = (*real).split_at_mut(halflength);
Dec 06 15:27:17.109 INFO [stderr]    |             ----^^^^^^^^^^
Dec 06 15:27:17.109 INFO [stderr]    |             |
Dec 06 15:27:17.109 INFO [stderr]    |             help: remove this `mut`
Dec 06 15:27:17.109 INFO [stderr]    |
Dec 06 15:27:17.109 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 06 15:27:17.109 INFO [stderr] 
Dec 06 15:27:17.109 INFO [stderr] warning: variable does not need to be mutable
Dec 06 15:27:17.109 INFO [stderr]   --> src/main.rs:92:13
Dec 06 15:27:17.109 INFO [stderr]    |
Dec 06 15:27:17.109 INFO [stderr] 92 |         let mut scratchhalves = (*scratch).split_at_mut(halflength);
Dec 06 15:27:17.109 INFO [stderr]    |             ----^^^^^^^^^^^^^
Dec 06 15:27:17.109 INFO [stderr]    |             |
Dec 06 15:27:17.109 INFO [stderr]    |             help: remove this `mut`
Dec 06 15:27:17.109 INFO [stderr] 
Dec 06 15:27:17.494 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
Dec 06 15:27:17.496 INFO [stderr] su: No module specific data is present
Dec 06 15:27:18.104 INFO running `"docker" "inspect" "d13b44e9bab09d15e2b8e952df8e7d5867eee0298b58a84ecbfffd7086ad33e4"`
Dec 06 15:27:18.382 INFO running `"docker" "rm" "-f" "d13b44e9bab09d15e2b8e952df8e7d5867eee0298b58a84ecbfffd7086ad33e4"`
Dec 06 15:27:18.720 INFO [stdout] d13b44e9bab09d15e2b8e952df8e7d5867eee0298b58a84ecbfffd7086ad33e4
Dec 06 15:27:18.724 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-2/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen" "-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"`
Dec 06 15:27:19.184 INFO [stdout] 69c5d3cf37c30459811743f541fa3914781bf69b0f55b2725bd2bbcc37056a4f
Dec 06 15:27:19.186 INFO running `"docker" "start" "-a" "69c5d3cf37c30459811743f541fa3914781bf69b0f55b2725bd2bbcc37056a4f"`
Dec 06 15:27:20.125 INFO [stderr] usermod: no changes
Dec 06 15:27:20.154 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 06 15:27:20.160 INFO [stderr]      Running /target/debug/deps/mergesort-593b6b904769bc2c
Dec 06 15:27:20.168 INFO [stdout] 
Dec 06 15:27:20.168 INFO [stdout] running 0 tests
Dec 06 15:27:20.168 INFO [stdout] 
Dec 06 15:27:20.168 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 06 15:27:20.168 INFO [stdout] 
Dec 06 15:27:20.176 INFO [stderr] su: No module specific data is present
Dec 06 15:27:20.657 INFO running `"docker" "inspect" "69c5d3cf37c30459811743f541fa3914781bf69b0f55b2725bd2bbcc37056a4f"`
Dec 06 15:27:20.766 INFO running `"docker" "rm" "-f" "69c5d3cf37c30459811743f541fa3914781bf69b0f55b2725bd2bbcc37056a4f"`
Dec 06 15:27:20.921 INFO [stdout] 69c5d3cf37c30459811743f541fa3914781bf69b0f55b2725bd2bbcc37056a4f