Dec 04 20:04:37.916 INFO checking ddefrenne/battleship against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 20:04:37.916 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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"`
Dec 04 20:04:38.277 INFO [stdout] 3be56a07abdc3875c9b68aee65a894710e758675d225d911f7d0af407afbcc68
Dec 04 20:04:38.280 INFO running `"docker" "start" "-a" "3be56a07abdc3875c9b68aee65a894710e758675d225d911f7d0af407afbcc68"`
Dec 04 20:04:38.681 INFO [stderr] usermod: no changes
Dec 04 20:04:38.714 INFO [stderr]     Checking battleship v0.1.0 (/source)
Dec 04 20:04:38.953 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 04 20:04:38.953 INFO [stderr]   --> src/main.rs:19:19
Dec 04 20:04:38.953 INFO [stderr]    |
Dec 04 20:04:38.953 INFO [stderr] 19 |     for column in (1..amount_of_columns + 1) {
Dec 04 20:04:38.953 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 04 20:04:38.953 INFO [stderr]    |
Dec 04 20:04:38.953 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 04 20:04:38.953 INFO [stderr] 
Dec 04 20:04:38.984 INFO [stderr] warning: unused variable: `grid`
Dec 04 20:04:38.984 INFO [stderr]  --> src/main.rs:5:9
Dec 04 20:04:38.984 INFO [stderr]   |
Dec 04 20:04:38.984 INFO [stderr] 5 |     let grid = build_grid(&rows, amount_of_columns);
Dec 04 20:04:38.985 INFO [stderr]   |         ^^^^ help: consider using `_grid` instead
Dec 04 20:04:38.985 INFO [stderr]   |
Dec 04 20:04:38.985 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 04 20:04:38.985 INFO [stderr] 
Dec 04 20:04:38.986 INFO [stderr] warning: unused variable: `rows`
Dec 04 20:04:38.986 INFO [stderr]  --> src/main.rs:8:15
Dec 04 20:04:38.986 INFO [stderr]   |
Dec 04 20:04:38.986 INFO [stderr] 8 | fn build_grid(rows: &[char; 10], amount_of_columns: i32) {
Dec 04 20:04:38.986 INFO [stderr]   |               ^^^^ help: consider using `_rows` instead
Dec 04 20:04:38.991 INFO [stderr] 
Dec 04 20:04:39.061 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 04 20:04:39.061 INFO [stderr]   --> src/main.rs:19:19
Dec 04 20:04:39.061 INFO [stderr]    |
Dec 04 20:04:39.061 INFO [stderr] 19 |     for column in (1..amount_of_columns + 1) {
Dec 04 20:04:39.061 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 04 20:04:39.061 INFO [stderr]    |
Dec 04 20:04:39.061 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 04 20:04:39.061 INFO [stderr] 
Dec 04 20:04:39.093 INFO [stderr] warning: unused variable: `grid`
Dec 04 20:04:39.093 INFO [stderr]  --> src/main.rs:5:9
Dec 04 20:04:39.093 INFO [stderr]   |
Dec 04 20:04:39.093 INFO [stderr] 5 |     let grid = build_grid(&rows, amount_of_columns);
Dec 04 20:04:39.093 INFO [stderr]   |         ^^^^ help: consider using `_grid` instead
Dec 04 20:04:39.093 INFO [stderr]   |
Dec 04 20:04:39.093 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 04 20:04:39.093 INFO [stderr] 
Dec 04 20:04:39.093 INFO [stderr] warning: unused variable: `rows`
Dec 04 20:04:39.093 INFO [stderr]  --> src/main.rs:8:15
Dec 04 20:04:39.093 INFO [stderr]   |
Dec 04 20:04:39.093 INFO [stderr] 8 | fn build_grid(rows: &[char; 10], amount_of_columns: i32) {
Dec 04 20:04:39.093 INFO [stderr]   |               ^^^^ help: consider using `_rows` instead
Dec 04 20:04:39.093 INFO [stderr] 
Dec 04 20:04:39.119 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Dec 04 20:04:39.121 INFO [stderr] su: No module specific data is present
Dec 04 20:04:39.400 INFO running `"docker" "inspect" "3be56a07abdc3875c9b68aee65a894710e758675d225d911f7d0af407afbcc68"`
Dec 04 20:04:39.496 INFO running `"docker" "rm" "-f" "3be56a07abdc3875c9b68aee65a894710e758675d225d911f7d0af407afbcc68"`
Dec 04 20:04:39.619 INFO [stdout] 3be56a07abdc3875c9b68aee65a894710e758675d225d911f7d0af407afbcc68