[INFO] cloning repository https://github.com/sadilekivan/sudoku-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sadilekivan/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsadilekivan%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsadilekivan%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 164b6003bca0d74c2c6882af3f5e5948fc5011f2
[INFO] testing sadilekivan/sudoku-solver against beta-2025-09-21 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsadilekivan%2Fsudoku-solver" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sadilekivan/sudoku-solver
[INFO] finished tweaking git repo https://github.com/sadilekivan/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/sadilekivan/sudoku-solver written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sadilekivan/sudoku-solver on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sadilekivan/sudoku-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a16e042be83584ae74b53d4ff25a0bccfea402428c5d214cf273321ef0b3d12
[INFO] running `Command { std: "docker" "start" "-a" "0a16e042be83584ae74b53d4ff25a0bccfea402428c5d214cf273321ef0b3d12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a16e042be83584ae74b53d4ff25a0bccfea402428c5d214cf273321ef0b3d12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a16e042be83584ae74b53d4ff25a0bccfea402428c5d214cf273321ef0b3d12", kill_on_drop: false }`
[INFO] [stdout] 0a16e042be83584ae74b53d4ff25a0bccfea402428c5d214cf273321ef0b3d12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1092cbd3e841b3715e2778dbb17651a6b35a9b4a9210ccb421518b2b46102978
[INFO] running `Command { std: "docker" "start" "-a" "1092cbd3e841b3715e2778dbb17651a6b35a9b4a9210ccb421518b2b46102978", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Lrtb` is never constructed
[INFO] [stdout]   --> src/strategy/lrtb.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Lrtb;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid` is never used
[INFO] [stdout]   --> src/strategy/lrtb.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn is_valid(board: &mut impl SudokuBoard, row: usize, col: usize, n: u32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `solve_step` is never used
[INFO] [stdout]   --> src/strategy/lrtb.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Lrtb {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn solve_step(board: &mut impl SudokuBoard, row: usize, col: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lap` is never constructed
[INFO] [stdout]  --> src/strategy/lap.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Lap;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_valid_numbers` is never used
[INFO] [stdout]  --> src/strategy/lap.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn get_valid_numbers(board: &mut impl SudokuBoard, p: Point) -> Vec<u32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LowestValid` is never constructed
[INFO] [stdout]   --> src/strategy/lap.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct LowestValid {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/strategy/lap.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl LowestValid {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 37 |     fn new(p: Point, valid_moves: Vec<u32>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_lowest_valid` is never used
[INFO] [stdout]   --> src/strategy/lap.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn first_lowest_valid(board: &mut impl SudokuBoard) -> Option<LowestValid> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `solve_step` is never used
[INFO] [stdout]   --> src/strategy/lap.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl Lap {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 65 |     fn solve_step(board: &mut impl SudokuBoard) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LapMc` is never constructed
[INFO] [stdout]  --> src/strategy/lapmc.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct LapMc;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_valid_numbers` is never used
[INFO] [stdout]   --> src/strategy/lapmc.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn get_valid_numbers(board: &mut impl SudokuBoard, p: Point) -> Vec<u32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LowestValid` is never constructed
[INFO] [stdout]   --> src/strategy/lapmc.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct LowestValid {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/strategy/lapmc.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl LowestValid {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 39 |     fn new(p: Point, valid_moves: Vec<u32>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_lowest_valid` is never used
[INFO] [stdout]   --> src/strategy/lapmc.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn first_lowest_valid(board: &mut impl SudokuBoard) -> Option<LowestValid> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `solve_step` is never used
[INFO] [stdout]   --> src/strategy/lapmc.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl LapMc {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 67 |     fn solve_step(board: &mut impl SudokuBoard) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "1092cbd3e841b3715e2778dbb17651a6b35a9b4a9210ccb421518b2b46102978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1092cbd3e841b3715e2778dbb17651a6b35a9b4a9210ccb421518b2b46102978", kill_on_drop: false }`
[INFO] [stdout] 1092cbd3e841b3715e2778dbb17651a6b35a9b4a9210ccb421518b2b46102978
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 048b122eadb2bb11f2e2d6872efbb6bf5f795bd5341ed3a2405550032fcc4e8f
[INFO] running `Command { std: "docker" "start" "-a" "048b122eadb2bb11f2e2d6872efbb6bf5f795bd5341ed3a2405550032fcc4e8f", kill_on_drop: false }`
[INFO] [stdout] warning: struct `Lrtb` is never constructed
[INFO] [stdout]   --> src/strategy/lrtb.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Lrtb;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid` is never used
[INFO] [stdout]   --> src/strategy/lrtb.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn is_valid(board: &mut impl SudokuBoard, row: usize, col: usize, n: u32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `solve_step` is never used
[INFO] [stdout]   --> src/strategy/lrtb.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Lrtb {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn solve_step(board: &mut impl SudokuBoard, row: usize, col: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lap` is never constructed
[INFO] [stdout]  --> src/strategy/lap.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Lap;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_valid_numbers` is never used
[INFO] [stdout]  --> src/strategy/lap.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn get_valid_numbers(board: &mut impl SudokuBoard, p: Point) -> Vec<u32> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LowestValid` is never constructed
[INFO] [stdout]   --> src/strategy/lap.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct LowestValid {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/strategy/lap.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl LowestValid {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 37 |     fn new(p: Point, valid_moves: Vec<u32>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_lowest_valid` is never used
[INFO] [stdout]   --> src/strategy/lap.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn first_lowest_valid(board: &mut impl SudokuBoard) -> Option<LowestValid> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `solve_step` is never used
[INFO] [stdout]   --> src/strategy/lap.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl Lap {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] 65 |     fn solve_step(board: &mut impl SudokuBoard) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LapMc` is never constructed
[INFO] [stdout]  --> src/strategy/lapmc.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct LapMc;
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_valid_numbers` is never used
[INFO] [stdout]   --> src/strategy/lapmc.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn get_valid_numbers(board: &mut impl SudokuBoard, p: Point) -> Vec<u32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LowestValid` is never constructed
[INFO] [stdout]   --> src/strategy/lapmc.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct LowestValid {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/strategy/lapmc.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl LowestValid {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 39 |     fn new(p: Point, valid_moves: Vec<u32>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_lowest_valid` is never used
[INFO] [stdout]   --> src/strategy/lapmc.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn first_lowest_valid(board: &mut impl SudokuBoard) -> Option<LowestValid> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `solve_step` is never used
[INFO] [stdout]   --> src/strategy/lapmc.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl LapMc {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 67 |     fn solve_step(board: &mut impl SudokuBoard) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "048b122eadb2bb11f2e2d6872efbb6bf5f795bd5341ed3a2405550032fcc4e8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "048b122eadb2bb11f2e2d6872efbb6bf5f795bd5341ed3a2405550032fcc4e8f", kill_on_drop: false }`
[INFO] [stdout] 048b122eadb2bb11f2e2d6872efbb6bf5f795bd5341ed3a2405550032fcc4e8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 67764311915afffa2fe163bd8b053db3d66ad0d3115da2db6f218bc2d106f08d
[INFO] running `Command { std: "docker" "start" "-a" "67764311915afffa2fe163bd8b053db3d66ad0d3115da2db6f218bc2d106f08d", kill_on_drop: false }`
[INFO] [stderr] warning: struct `Lrtb` is never constructed
[INFO] [stderr]   --> src/strategy/lrtb.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 | struct Lrtb;
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_valid` is never used
[INFO] [stderr]   --> src/strategy/lrtb.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn is_valid(board: &mut impl SudokuBoard, row: usize, col: usize, n: u32) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `solve_step` is never used
[INFO] [stderr]   --> src/strategy/lrtb.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 44 | impl Lrtb {
[INFO] [stderr]    | --------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 48 |     fn solve_step(board: &mut impl SudokuBoard, row: usize, col: usize) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Lap` is never constructed
[INFO] [stderr]  --> src/strategy/lap.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Lap;
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_valid_numbers` is never used
[INFO] [stderr]  --> src/strategy/lap.rs:8:4
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn get_valid_numbers(board: &mut impl SudokuBoard, p: Point) -> Vec<u32> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `LowestValid` is never constructed
[INFO] [stderr]   --> src/strategy/lap.rs:31:8
[INFO] [stderr]    |
[INFO] [stderr] 31 | struct LowestValid {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/strategy/lap.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 36 | impl LowestValid {
[INFO] [stderr]    | ---------------- associated function in this implementation
[INFO] [stderr] 37 |     fn new(p: Point, valid_moves: Vec<u32>) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `first_lowest_valid` is never used
[INFO] [stderr]   --> src/strategy/lap.rs:43:4
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn first_lowest_valid(board: &mut impl SudokuBoard) -> Option<LowestValid> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `solve_step` is never used
[INFO] [stderr]   --> src/strategy/lap.rs:65:8
[INFO] [stderr]    |
[INFO] [stderr] 64 | impl Lap {
[INFO] [stderr]    | -------- associated function in this implementation
[INFO] [stderr] 65 |     fn solve_step(board: &mut impl SudokuBoard) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `LapMc` is never constructed
[INFO] [stderr]  --> src/strategy/lapmc.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct LapMc;
[INFO] [stderr]   |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `get_valid_numbers` is never used
[INFO] [stderr]   --> src/strategy/lapmc.rs:10:4
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn get_valid_numbers(board: &mut impl SudokuBoard, p: Point) -> Vec<u32> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `LowestValid` is never constructed
[INFO] [stderr]   --> src/strategy/lapmc.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 | struct LowestValid {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/strategy/lapmc.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | impl LowestValid {
[INFO] [stderr]    | ---------------- associated function in this implementation
[INFO] [stderr] 39 |     fn new(p: Point, valid_moves: Vec<u32>) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `first_lowest_valid` is never used
[INFO] [stderr]   --> src/strategy/lapmc.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn first_lowest_valid(board: &mut impl SudokuBoard) -> Option<LowestValid> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `solve_step` is never used
[INFO] [stderr]   --> src/strategy/lapmc.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 66 | impl LapMc {
[INFO] [stderr]    | ---------- associated function in this implementation
[INFO] [stderr] 67 |     fn solve_step(board: &mut impl SudokuBoard) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku-solver` (lib) generated 15 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sudoku_solver-30f7752785fb0ebf)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test strategy::lap::able_to_solve ... ok
[INFO] [stdout] test strategy::lapmc::able_to_solve ... ok
[INFO] [stdout] test strategy::lrtb::able_to_solve ... ok
[INFO] [stderr]      Running unittests src/bin/draw_board.rs (/opt/rustwide/target/debug/deps/draw_board-4e0898d6cc95defe)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sudoku_solver
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.85s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "67764311915afffa2fe163bd8b053db3d66ad0d3115da2db6f218bc2d106f08d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67764311915afffa2fe163bd8b053db3d66ad0d3115da2db6f218bc2d106f08d", kill_on_drop: false }`
[INFO] [stdout] 67764311915afffa2fe163bd8b053db3d66ad0d3115da2db6f218bc2d106f08d