[INFO] cloning repository https://github.com/TorsteinTenstad/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/TorsteinTenstad/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorsteinTenstad%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorsteinTenstad%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41a5ff874207850fb28180259734d3a7fe940baa
[INFO] testing TorsteinTenstad/sudoku-solver against beta-2025-04-13 for beta-1.87-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorsteinTenstad%2Fsudoku-solver" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TorsteinTenstad/sudoku-solver on toolchain beta-2025-04-13
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-04-13" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TorsteinTenstad/sudoku-solver
[INFO] finished tweaking git repo https://github.com/TorsteinTenstad/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/TorsteinTenstad/sudoku-solver written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TorsteinTenstad/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-2025-04-13" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e85f6c798800e6335d6fd0c2aa1b0aff9ce8b2897b7edb3e6f3dcd79931e271
[INFO] running `Command { std: "docker" "start" "-a" "4e85f6c798800e6335d6fd0c2aa1b0aff9ce8b2897b7edb3e6f3dcd79931e271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e85f6c798800e6335d6fd0c2aa1b0aff9ce8b2897b7edb3e6f3dcd79931e271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e85f6c798800e6335d6fd0c2aa1b0aff9ce8b2897b7edb3e6f3dcd79931e271", kill_on_drop: false }`
[INFO] [stdout] 4e85f6c798800e6335d6fd0c2aa1b0aff9ce8b2897b7edb3e6f3dcd79931e271
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fba45975dc69b13072a4b2118c7d1a0c73d06af125ff8f3f47b619a238f05e94
[INFO] running `Command { std: "docker" "start" "-a" "fba45975dc69b13072a4b2118c7d1a0c73d06af125ff8f3f47b619a238f05e94", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.81
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling rustversion v1.0.15
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle v1.0.6
[INFO] [stderr]    Compiling anstyle-query v1.0.2
[INFO] [stderr]    Compiling clap_lex v0.7.0
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.3
[INFO] [stderr]    Compiling colored v2.1.0
[INFO] [stderr]    Compiling anstream v0.6.13
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling clap_builder v4.5.2
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.60
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]    Compiling clap_derive v4.5.4
[INFO] [stderr]    Compiling strum v0.25.0
[INFO] [stderr]    Compiling clap v4.5.4
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `number_of_solved_squares` and `iterations` are never read
[INFO] [stdout]   --> src/solver.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct SolveResult {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 15 |     pub exit_condition: SolveExitCondition,
[INFO] [stdout] 16 |     pub number_of_solved_squares: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 17 |     pub unsolved_metric: usize,
[INFO] [stdout] 18 |     pub iterations: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.23s
[INFO] running `Command { std: "docker" "inspect" "fba45975dc69b13072a4b2118c7d1a0c73d06af125ff8f3f47b619a238f05e94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fba45975dc69b13072a4b2118c7d1a0c73d06af125ff8f3f47b619a238f05e94", kill_on_drop: false }`
[INFO] [stdout] fba45975dc69b13072a4b2118c7d1a0c73d06af125ff8f3f47b619a238f05e94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e55418ce831ac635f33958563e26832ff25026dcf260924ce848021bf9583b74
[INFO] running `Command { std: "docker" "start" "-a" "e55418ce831ac635f33958563e26832ff25026dcf260924ce848021bf9583b74", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `number_of_solved_squares` and `iterations` are never read
[INFO] [stdout]   --> src/solver.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct SolveResult {
[INFO] [stdout]    |            ----------- fields in this struct
[INFO] [stdout] 15 |     pub exit_condition: SolveExitCondition,
[INFO] [stdout] 16 |     pub number_of_solved_squares: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 17 |     pub unsolved_metric: usize,
[INFO] [stdout] 18 |     pub iterations: usize,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "e55418ce831ac635f33958563e26832ff25026dcf260924ce848021bf9583b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e55418ce831ac635f33958563e26832ff25026dcf260924ce848021bf9583b74", kill_on_drop: false }`
[INFO] [stdout] e55418ce831ac635f33958563e26832ff25026dcf260924ce848021bf9583b74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-04-13" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c14527bb71ef1e33943c484aaba2320ad957216b3a945ea82f4ea1dc52b3e52e
[INFO] running `Command { std: "docker" "start" "-a" "c14527bb71ef1e33943c484aaba2320ad957216b3a945ea82f4ea1dc52b3e52e", kill_on_drop: false }`
[INFO] [stderr] warning: fields `number_of_solved_squares` and `iterations` are never read
[INFO] [stderr]   --> src/solver.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct SolveResult {
[INFO] [stderr]    |            ----------- fields in this struct
[INFO] [stderr] 15 |     pub exit_condition: SolveExitCondition,
[INFO] [stderr] 16 |     pub number_of_solved_squares: usize,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 17 |     pub unsolved_metric: usize,
[INFO] [stderr] 18 |     pub iterations: usize,
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku-solver` (bin "sudoku-solver" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sudoku_solver-8ccd0a24a59d0bc4)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test number_set_tests::tests::test_contains ... ok
[INFO] [stdout] test number_set_tests::tests::test_into_iter ... ok
[INFO] [stdout] test number_set_tests::tests::test_first ... ok
[INFO] [stdout] test number_set_tests::tests::test_new ... ok
[INFO] [stdout] test number_set_tests::tests::test_remove ... ok
[INFO] [stdout] test number_set_tests::tests::test_single_is_none ... ok
[INFO] [stdout] test number_set_tests::tests::test_single_is_none_too_many ... ok
[INFO] [stdout] test number_set_tests::tests::test_single_is_some ... ok
[INFO] [stdout] test number_set_tests::tests::test_without ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c14527bb71ef1e33943c484aaba2320ad957216b3a945ea82f4ea1dc52b3e52e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c14527bb71ef1e33943c484aaba2320ad957216b3a945ea82f4ea1dc52b3e52e", kill_on_drop: false }`
[INFO] [stdout] c14527bb71ef1e33943c484aaba2320ad957216b3a945ea82f4ea1dc52b3e52e