Nov 27 19:32:12.469 INFO checking suelz/chapter_4 against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 27 19:32:12.469 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-2/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/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 27 19:32:12.842 INFO [stdout] 7e5aef5b90ce629e2326df1a2a63d1369569871397efa34e7da0a235ef23e6e9
Nov 27 19:32:12.846 INFO running `"docker" "start" "-a" "7e5aef5b90ce629e2326df1a2a63d1369569871397efa34e7da0a235ef23e6e9"`
Nov 27 19:32:14.055 INFO [stderr] usermod: no changes
Nov 27 19:32:14.112 INFO [stderr]     Checking ch4 v0.1.0 (/source)
Nov 27 19:32:14.373 INFO [stderr] warning: unused variable: `word`
Nov 27 19:32:14.373 INFO [stderr]   --> src/main.rs:28:9
Nov 27 19:32:14.373 INFO [stderr]    |
Nov 27 19:32:14.374 INFO [stderr] 28 |     let word = first_word(&x);
Nov 27 19:32:14.374 INFO [stderr]    |         ^^^^ help: consider using `_word` instead
Nov 27 19:32:14.374 INFO [stderr]    |
Nov 27 19:32:14.374 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 27 19:32:14.375 INFO [stderr] 
Nov 27 19:32:14.389 INFO [stderr] warning: variable does not need to be mutable
Nov 27 19:32:14.389 INFO [stderr]   --> src/main.rs:26:9
Nov 27 19:32:14.389 INFO [stderr]    |
Nov 27 19:32:14.390 INFO [stderr] 26 |     let mut x = String::from("Conor Kennedy");
Nov 27 19:32:14.390 INFO [stderr]    |         ----^
Nov 27 19:32:14.390 INFO [stderr]    |         |
Nov 27 19:32:14.390 INFO [stderr]    |         help: remove this `mut`
Nov 27 19:32:14.391 INFO [stderr]    |
Nov 27 19:32:14.391 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 27 19:32:14.391 INFO [stderr] 
Nov 27 19:32:14.525 INFO [stderr] warning: unused variable: `word`
Nov 27 19:32:14.525 INFO [stderr]   --> src/main.rs:28:9
Nov 27 19:32:14.525 INFO [stderr]    |
Nov 27 19:32:14.526 INFO [stderr] 28 |     let word = first_word(&x);
Nov 27 19:32:14.526 INFO [stderr]    |         ^^^^ help: consider using `_word` instead
Nov 27 19:32:14.526 INFO [stderr]    |
Nov 27 19:32:14.527 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 27 19:32:14.527 INFO [stderr] 
Nov 27 19:32:14.537 INFO [stderr] warning: variable does not need to be mutable
Nov 27 19:32:14.537 INFO [stderr]   --> src/main.rs:26:9
Nov 27 19:32:14.537 INFO [stderr]    |
Nov 27 19:32:14.538 INFO [stderr] 26 |     let mut x = String::from("Conor Kennedy");
Nov 27 19:32:14.538 INFO [stderr]    |         ----^
Nov 27 19:32:14.538 INFO [stderr]    |         |
Nov 27 19:32:14.539 INFO [stderr]    |         help: remove this `mut`
Nov 27 19:32:14.539 INFO [stderr]    |
Nov 27 19:32:14.539 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 27 19:32:14.539 INFO [stderr] 
Nov 27 19:32:14.560 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
Nov 27 19:32:14.562 INFO [stderr] su: No module specific data is present
Nov 27 19:32:15.450 INFO running `"docker" "inspect" "7e5aef5b90ce629e2326df1a2a63d1369569871397efa34e7da0a235ef23e6e9"`
Nov 27 19:32:15.833 INFO running `"docker" "rm" "-f" "7e5aef5b90ce629e2326df1a2a63d1369569871397efa34e7da0a235ef23e6e9"`
Nov 27 19:32:16.209 INFO [stdout] 7e5aef5b90ce629e2326df1a2a63d1369569871397efa34e7da0a235ef23e6e9