Dec 17 13:18:09.361 INFO checking tomvidm/rust-sudoku-solver against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 13:18:09.361 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/tomvidm/rust-sudoku-solver:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 13:18:09.848 INFO [stdout] b1c036d3bec6f7418f5edc541c46e2e0f4bc67c9029e8bc36a27a8f4754a987d
Dec 17 13:18:09.850 INFO running `"docker" "start" "-a" "b1c036d3bec6f7418f5edc541c46e2e0f4bc67c9029e8bc36a27a8f4754a987d"`
Dec 17 13:18:12.570 INFO [stderr]    Compiling ryu v0.2.4
Dec 17 13:18:12.576 INFO [stderr]    Compiling serde v1.0.73
Dec 17 13:18:12.597 INFO [stderr]    Compiling syn v0.14.9
Dec 17 13:18:28.642 INFO [stderr]    Compiling serde_derive v1.0.73
Dec 17 13:18:37.966 INFO [stderr]     Checking serde_json v1.0.26
Dec 17 13:18:47.959 INFO [stderr]     Checking sudoku v0.1.0 (/opt/crater/workdir)
Dec 17 13:18:48.540 INFO [stderr] warning: unused variable: `board`
Dec 17 13:18:48.540 INFO [stderr]   --> src/main.rs:10:9
Dec 17 13:18:48.540 INFO [stderr]    |
Dec 17 13:18:48.540 INFO [stderr] 10 |     let board = su::Board::new();
Dec 17 13:18:48.540 INFO [stderr]    |         ^^^^^ help: consider using `_board` instead
Dec 17 13:18:48.540 INFO [stderr]    |
Dec 17 13:18:48.540 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.541 INFO [stderr] warning: unused variable: `coord`
Dec 17 13:18:48.541 INFO [stderr]   --> src/su/board.rs:80:21
Dec 17 13:18:48.541 INFO [stderr]    |
Dec 17 13:18:48.541 INFO [stderr] 80 |                 let coord = Coord::new(r, c);
Dec 17 13:18:48.541 INFO [stderr]    |                     ^^^^^ help: consider using `_coord` instead
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.541 INFO [stderr] warning: unused variable: `old_entry`
Dec 17 13:18:48.541 INFO [stderr]    --> src/su/board.rs:174:17
Dec 17 13:18:48.541 INFO [stderr]     |
Dec 17 13:18:48.541 INFO [stderr] 174 |             let old_entry = Move::new_from_coord_and_value(coord, old_value);
Dec 17 13:18:48.541 INFO [stderr]     |                 ^^^^^^^^^ help: consider using `_old_entry` instead
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.541 INFO [stderr] warning: unused variable: `raw_board_struct`
Dec 17 13:18:48.541 INFO [stderr]   --> src/su/sugame.rs:31:13
Dec 17 13:18:48.541 INFO [stderr]    |
Dec 17 13:18:48.541 INFO [stderr] 31 |         let raw_board_struct = raw_board.clone();
Dec 17 13:18:48.541 INFO [stderr]    |             ^^^^^^^^^^^^^^^^ help: consider using `_raw_board_struct` instead
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.541 INFO [stderr] warning: unused variable: `board`
Dec 17 13:18:48.541 INFO [stderr]   --> src/main.rs:10:9
Dec 17 13:18:48.541 INFO [stderr]    |
Dec 17 13:18:48.541 INFO [stderr] 10 |     let board = su::Board::new();
Dec 17 13:18:48.541 INFO [stderr]    |         ^^^^^ help: consider using `_board` instead
Dec 17 13:18:48.541 INFO [stderr]    |
Dec 17 13:18:48.541 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.541 INFO [stderr] warning: unused variable: `board`
Dec 17 13:18:48.541 INFO [stderr]    --> src/su/board.rs:205:13
Dec 17 13:18:48.541 INFO [stderr]     |
Dec 17 13:18:48.541 INFO [stderr] 205 |     let mut board = Board::new_from_array(valid_raw_board);
Dec 17 13:18:48.541 INFO [stderr]     |             ^^^^^ help: consider using `_board` instead
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.541 INFO [stderr] warning: unused variable: `game`
Dec 17 13:18:48.541 INFO [stderr]   --> src/su/sugame.rs:49:9
Dec 17 13:18:48.541 INFO [stderr]    |
Dec 17 13:18:48.541 INFO [stderr] 49 |     let game = Game::test_game();
Dec 17 13:18:48.541 INFO [stderr]    |         ^^^^ help: consider using `_game` instead
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.541 INFO [stderr] warning: unused variable: `coord`
Dec 17 13:18:48.541 INFO [stderr]   --> src/su/board.rs:80:21
Dec 17 13:18:48.541 INFO [stderr]    |
Dec 17 13:18:48.541 INFO [stderr] 80 |                 let coord = Coord::new(r, c);
Dec 17 13:18:48.541 INFO [stderr]    |                     ^^^^^ help: consider using `_coord` instead
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.541 INFO [stderr] warning: unused variable: `old_entry`
Dec 17 13:18:48.541 INFO [stderr]    --> src/su/board.rs:174:17
Dec 17 13:18:48.541 INFO [stderr]     |
Dec 17 13:18:48.541 INFO [stderr] 174 |             let old_entry = Move::new_from_coord_and_value(coord, old_value);
Dec 17 13:18:48.541 INFO [stderr]     |                 ^^^^^^^^^ help: consider using `_old_entry` instead
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.541 INFO [stderr] warning: unused variable: `raw_board_struct`
Dec 17 13:18:48.541 INFO [stderr]   --> src/su/sugame.rs:31:13
Dec 17 13:18:48.541 INFO [stderr]    |
Dec 17 13:18:48.541 INFO [stderr] 31 |         let raw_board_struct = raw_board.clone();
Dec 17 13:18:48.541 INFO [stderr]    |             ^^^^^^^^^^^^^^^^ help: consider using `_raw_board_struct` instead
Dec 17 13:18:48.541 INFO [stderr] 
Dec 17 13:18:48.552 INFO [stderr] warning: variable does not need to be mutable
Dec 17 13:18:48.552 INFO [stderr]    --> src/su/board.rs:205:9
Dec 17 13:18:48.552 INFO [stderr]     |
Dec 17 13:18:48.552 INFO [stderr] 205 |     let mut board = Board::new_from_array(valid_raw_board);
Dec 17 13:18:48.552 INFO [stderr]     |         ----^^^^^
Dec 17 13:18:48.552 INFO [stderr]     |         |
Dec 17 13:18:48.552 INFO [stderr]     |         help: remove this `mut`
Dec 17 13:18:48.552 INFO [stderr]     |
Dec 17 13:18:48.552 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 13:18:48.552 INFO [stderr] 
Dec 17 13:18:48.600 INFO [stderr] warning: field is never used: `data`
Dec 17 13:18:48.600 INFO [stderr]  --> src/su/sugame.rs:9:5
Dec 17 13:18:48.600 INFO [stderr]   |
Dec 17 13:18:48.600 INFO [stderr] 9 |     data: [[i8; 9]; 9]
Dec 17 13:18:48.600 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 17 13:18:48.600 INFO [stderr]   |
Dec 17 13:18:48.600 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 13:18:48.600 INFO [stderr] 
Dec 17 13:18:48.600 INFO [stderr] warning: field is never used: `board`
Dec 17 13:18:48.600 INFO [stderr]   --> src/su/sugame.rs:13:5
Dec 17 13:18:48.600 INFO [stderr]    |
Dec 17 13:18:48.600 INFO [stderr] 13 |     board: Board,
Dec 17 13:18:48.600 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 17 13:18:48.600 INFO [stderr] 
Dec 17 13:18:48.616 INFO [stderr] warning: field is never used: `data`
Dec 17 13:18:48.616 INFO [stderr]  --> src/su/sugame.rs:9:5
Dec 17 13:18:48.616 INFO [stderr]   |
Dec 17 13:18:48.616 INFO [stderr] 9 |     data: [[i8; 9]; 9]
Dec 17 13:18:48.616 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 17 13:18:48.616 INFO [stderr]   |
Dec 17 13:18:48.616 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 13:18:48.616 INFO [stderr] 
Dec 17 13:18:48.616 INFO [stderr] warning: struct is never constructed: `Game`
Dec 17 13:18:48.616 INFO [stderr]   --> src/su/sugame.rs:12:1
Dec 17 13:18:48.616 INFO [stderr]    |
Dec 17 13:18:48.616 INFO [stderr] 12 | pub struct Game {
Dec 17 13:18:48.616 INFO [stderr]    | ^^^^^^^^^^^^^^^
Dec 17 13:18:48.616 INFO [stderr] 
Dec 17 13:18:48.616 INFO [stderr] warning: method is never used: `test_game`
Dec 17 13:18:48.616 INFO [stderr]   --> src/su/sugame.rs:17:5
Dec 17 13:18:48.616 INFO [stderr]    |
Dec 17 13:18:48.616 INFO [stderr] 17 |     fn test_game() -> Option<Game> {
Dec 17 13:18:48.616 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 13:18:48.616 INFO [stderr] 
Dec 17 13:18:48.652 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.16s
Dec 17 13:18:49.652 INFO running `"docker" "inspect" "b1c036d3bec6f7418f5edc541c46e2e0f4bc67c9029e8bc36a27a8f4754a987d"`
Dec 17 13:18:49.964 INFO running `"docker" "rm" "-f" "b1c036d3bec6f7418f5edc541c46e2e0f4bc67c9029e8bc36a27a8f4754a987d"`
Dec 17 13:18:50.262 INFO [stdout] b1c036d3bec6f7418f5edc541c46e2e0f4bc67c9029e8bc36a27a8f4754a987d