Dec 11 19:55:34.397 INFO checking ddefrenne/battleship against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 19:55:34.397 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 19:55:34.898 INFO [stdout] bd2d4bd4805f987a24fc8e173b7b7c1a4841b032e60089f62055afc3c05df4de
Dec 11 19:55:34.902 INFO running `"docker" "start" "-a" "bd2d4bd4805f987a24fc8e173b7b7c1a4841b032e60089f62055afc3c05df4de"`
Dec 11 19:55:35.596 INFO [stderr] usermod: no changes
Dec 11 19:55:35.660 INFO [stderr]     Checking battleship v0.1.0 (/source)
Dec 11 19:55:36.092 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 11 19:55:36.092 INFO [stderr]   --> src/main.rs:19:19
Dec 11 19:55:36.092 INFO [stderr]    |
Dec 11 19:55:36.092 INFO [stderr] 19 |     for column in (1..amount_of_columns + 1) {
Dec 11 19:55:36.092 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 11 19:55:36.092 INFO [stderr]    |
Dec 11 19:55:36.092 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 11 19:55:36.092 INFO [stderr] 
Dec 11 19:55:36.116 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 11 19:55:36.116 INFO [stderr]   --> src/main.rs:19:19
Dec 11 19:55:36.116 INFO [stderr]    |
Dec 11 19:55:36.116 INFO [stderr] 19 |     for column in (1..amount_of_columns + 1) {
Dec 11 19:55:36.116 INFO [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 11 19:55:36.116 INFO [stderr]    |
Dec 11 19:55:36.116 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 11 19:55:36.116 INFO [stderr] 
Dec 11 19:55:36.128 INFO [stderr] warning: unused variable: `grid`
Dec 11 19:55:36.128 INFO [stderr]  --> src/main.rs:5:9
Dec 11 19:55:36.128 INFO [stderr]   |
Dec 11 19:55:36.128 INFO [stderr] 5 |     let grid = build_grid(&rows, amount_of_columns);
Dec 11 19:55:36.128 INFO [stderr]   |         ^^^^ help: consider using `_grid` instead
Dec 11 19:55:36.128 INFO [stderr]   |
Dec 11 19:55:36.128 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 11 19:55:36.128 INFO [stderr] 
Dec 11 19:55:36.128 INFO [stderr] warning: unused variable: `rows`
Dec 11 19:55:36.128 INFO [stderr]  --> src/main.rs:8:15
Dec 11 19:55:36.128 INFO [stderr]   |
Dec 11 19:55:36.128 INFO [stderr] 8 | fn build_grid(rows: &[char; 10], amount_of_columns: i32) {
Dec 11 19:55:36.129 INFO [stderr]   |               ^^^^ help: consider using `_rows` instead
Dec 11 19:55:36.129 INFO [stderr] 
Dec 11 19:55:36.144 INFO [stderr] warning: unused variable: `grid`
Dec 11 19:55:36.144 INFO [stderr]  --> src/main.rs:5:9
Dec 11 19:55:36.144 INFO [stderr]   |
Dec 11 19:55:36.144 INFO [stderr] 5 |     let grid = build_grid(&rows, amount_of_columns);
Dec 11 19:55:36.144 INFO [stderr]   |         ^^^^ help: consider using `_grid` instead
Dec 11 19:55:36.144 INFO [stderr]   |
Dec 11 19:55:36.144 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 11 19:55:36.144 INFO [stderr] 
Dec 11 19:55:36.144 INFO [stderr] warning: unused variable: `rows`
Dec 11 19:55:36.144 INFO [stderr]  --> src/main.rs:8:15
Dec 11 19:55:36.144 INFO [stderr]   |
Dec 11 19:55:36.144 INFO [stderr] 8 | fn build_grid(rows: &[char; 10], amount_of_columns: i32) {
Dec 11 19:55:36.144 INFO [stderr]   |               ^^^^ help: consider using `_rows` instead
Dec 11 19:55:36.144 INFO [stderr] 
Dec 11 19:55:36.172 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
Dec 11 19:55:36.179 INFO [stderr] su: No module specific data is present
Dec 11 19:55:36.505 INFO running `"docker" "inspect" "bd2d4bd4805f987a24fc8e173b7b7c1a4841b032e60089f62055afc3c05df4de"`
Dec 11 19:55:36.630 INFO running `"docker" "rm" "-f" "bd2d4bd4805f987a24fc8e173b7b7c1a4841b032e60089f62055afc3c05df4de"`
Dec 11 19:55:36.736 INFO [stdout] bd2d4bd4805f987a24fc8e173b7b7c1a4841b032e60089f62055afc3c05df4de