[INFO] cloning repository https://github.com/luna7111/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/luna7111/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34079008b4c5cec75058b8205368d69ac66203b0
[INFO] testing luna7111/sudoku-solver against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Fsudoku-solver" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/luna7111/sudoku-solver
[INFO] finished tweaking git repo https://github.com/luna7111/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/luna7111/sudoku-solver written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luna7111/sudoku-solver on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luna7111/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-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0d239a9332806d0f102fc4e7da79bfb360d61719cce4b2f70b245017998cb5f
[INFO] running `Command { std: "docker" "start" "-a" "f0d239a9332806d0f102fc4e7da79bfb360d61719cce4b2f70b245017998cb5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0d239a9332806d0f102fc4e7da79bfb360d61719cce4b2f70b245017998cb5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0d239a9332806d0f102fc4e7da79bfb360d61719cce4b2f70b245017998cb5f", kill_on_drop: false }`
[INFO] [stdout] f0d239a9332806d0f102fc4e7da79bfb360d61719cce4b2f70b245017998cb5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15c99c53b8c22b5d419c5243a0e3582d985ed19f75c6c0ac9ad9b86f95b5da2b
[INFO] running `Command { std: "docker" "start" "-a" "15c99c53b8c22b5d419c5243a0e3582d985ed19f75c6c0ac9ad9b86f95b5da2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/main.rs:37:24
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn evaluate_constrains(board: &mut Board) {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_4x4` should have an upper case name
[INFO] [stdout]    --> src/main.rs:150:7
[INFO] [stdout]     |
[INFO] [stdout] 150 | const BASE_4x4: &str = "1234";
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 150 - const BASE_4x4: &str = "1234";
[INFO] [stdout] 150 + const BASE_4X4: &str = "1234";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_9x9` should have an upper case name
[INFO] [stdout]    --> src/main.rs:151:7
[INFO] [stdout]     |
[INFO] [stdout] 151 | const BASE_9x9: &str = "123456789";
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 151 - const BASE_9x9: &str = "123456789";
[INFO] [stdout] 151 + const BASE_9X9: &str = "123456789";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_16x16` should have an upper case name
[INFO] [stdout]    --> src/main.rs:152:7
[INFO] [stdout]     |
[INFO] [stdout] 152 | const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stdout]     |       ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 152 - const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stdout] 152 + const BASE_16X16: &str = "0123456789abcdef";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "15c99c53b8c22b5d419c5243a0e3582d985ed19f75c6c0ac9ad9b86f95b5da2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15c99c53b8c22b5d419c5243a0e3582d985ed19f75c6c0ac9ad9b86f95b5da2b", kill_on_drop: false }`
[INFO] [stdout] 15c99c53b8c22b5d419c5243a0e3582d985ed19f75c6c0ac9ad9b86f95b5da2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1822cd7b700a3ceaae32f16f6a383e22213ba37aa0604aead528a6d71059580
[INFO] running `Command { std: "docker" "start" "-a" "d1822cd7b700a3ceaae32f16f6a383e22213ba37aa0604aead528a6d71059580", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/main.rs:37:24
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn evaluate_constrains(board: &mut Board) {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_4x4` should have an upper case name
[INFO] [stdout]    --> src/main.rs:150:7
[INFO] [stdout]     |
[INFO] [stdout] 150 | const BASE_4x4: &str = "1234";
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 150 - const BASE_4x4: &str = "1234";
[INFO] [stdout] 150 + const BASE_4X4: &str = "1234";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_9x9` should have an upper case name
[INFO] [stdout]    --> src/main.rs:151:7
[INFO] [stdout]     |
[INFO] [stdout] 151 | const BASE_9x9: &str = "123456789";
[INFO] [stdout]     |       ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 151 - const BASE_9x9: &str = "123456789";
[INFO] [stdout] 151 + const BASE_9X9: &str = "123456789";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BASE_16x16` should have an upper case name
[INFO] [stdout]    --> src/main.rs:152:7
[INFO] [stdout]     |
[INFO] [stdout] 152 | const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stdout]     |       ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stdout]     |
[INFO] [stdout] 152 - const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stdout] 152 + const BASE_16X16: &str = "0123456789abcdef";
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "d1822cd7b700a3ceaae32f16f6a383e22213ba37aa0604aead528a6d71059580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1822cd7b700a3ceaae32f16f6a383e22213ba37aa0604aead528a6d71059580", kill_on_drop: false }`
[INFO] [stdout] d1822cd7b700a3ceaae32f16f6a383e22213ba37aa0604aead528a6d71059580
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2ec30bb1e27a79799b8685f45ac27d063d65eeee4fc3005a278891de60940dac
[INFO] running `Command { std: "docker" "start" "-a" "2ec30bb1e27a79799b8685f45ac27d063d65eeee4fc3005a278891de60940dac", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `board`
[INFO] [stderr]   --> src/main.rs:37:24
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn evaluate_constrains(board: &mut Board) {
[INFO] [stderr]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BASE_4x4` should have an upper case name
[INFO] [stderr]    --> src/main.rs:150:7
[INFO] [stderr]     |
[INFO] [stderr] 150 | const BASE_4x4: &str = "1234";
[INFO] [stderr]     |       ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stderr]     |
[INFO] [stderr] 150 - const BASE_4x4: &str = "1234";
[INFO] [stderr] 150 + const BASE_4X4: &str = "1234";
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BASE_9x9` should have an upper case name
[INFO] [stderr]    --> src/main.rs:151:7
[INFO] [stderr]     |
[INFO] [stderr] 151 | const BASE_9x9: &str = "123456789";
[INFO] [stderr]     |       ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stderr]     |
[INFO] [stderr] 151 - const BASE_9x9: &str = "123456789";
[INFO] [stderr] 151 + const BASE_9X9: &str = "123456789";
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BASE_16x16` should have an upper case name
[INFO] [stderr]    --> src/main.rs:152:7
[INFO] [stderr]     |
[INFO] [stderr] 152 | const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stderr]     |       ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: convert the identifier to upper case (notice the capitalization)
[INFO] [stderr]     |
[INFO] [stderr] 152 - const BASE_16x16: &str = "0123456789abcdef";
[INFO] [stderr] 152 + const BASE_16X16: &str = "0123456789abcdef";
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku-solver` (bin "sudoku-solver" test) generated 4 warnings (run `cargo fix --bin "sudoku-solver" -p sudoku-solver --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sudoku_solver-b7daeb83d4c3805d)
[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" "2ec30bb1e27a79799b8685f45ac27d063d65eeee4fc3005a278891de60940dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ec30bb1e27a79799b8685f45ac27d063d65eeee4fc3005a278891de60940dac", kill_on_drop: false }`
[INFO] [stdout] 2ec30bb1e27a79799b8685f45ac27d063d65eeee4fc3005a278891de60940dac
