[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] checking TorsteinTenstad/sudoku-solver against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTorsteinTenstad%2Fsudoku-solver" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TorsteinTenstad/sudoku-solver on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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-4-tc1/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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5ed38f85700e614c63679e95b51ee327e9f2174db5ae060f00ad76b9a1a0120b
[INFO] running `Command { std: "docker" "start" "-a" "5ed38f85700e614c63679e95b51ee327e9f2174db5ae060f00ad76b9a1a0120b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ed38f85700e614c63679e95b51ee327e9f2174db5ae060f00ad76b9a1a0120b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ed38f85700e614c63679e95b51ee327e9f2174db5ae060f00ad76b9a1a0120b", kill_on_drop: false }`
[INFO] [stdout] 5ed38f85700e614c63679e95b51ee327e9f2174db5ae060f00ad76b9a1a0120b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 963222fa4c72253f482d78922948cd178ab35cccbd3eed501a8bcb6c1d1f11a5
[INFO] running `Command { std: "docker" "start" "-a" "963222fa4c72253f482d78922948cd178ab35cccbd3eed501a8bcb6c1d1f11a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.81
[INFO] [stderr]    Compiling rustversion v1.0.15
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking anstyle v1.0.6
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking anstyle-query v1.0.2
[INFO] [stderr]     Checking strsim v0.11.1
[INFO] [stderr]     Checking clap_lex v0.7.0
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling anyhow v1.0.82
[INFO] [stderr]     Checking either v1.11.0
[INFO] [stderr]     Checking colored v2.1.0
[INFO] [stderr]     Checking anstyle-parse v0.2.3
[INFO] [stderr]     Checking anstream v0.6.13
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking clap_builder v4.5.2
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.60
[INFO] [stderr]    Compiling clap_derive v4.5.4
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]     Checking strum v0.25.0
[INFO] [stderr]     Checking clap v4.5.4
[INFO] [stderr]     Checking 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.68s
[INFO] running `Command { std: "docker" "inspect" "963222fa4c72253f482d78922948cd178ab35cccbd3eed501a8bcb6c1d1f11a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "963222fa4c72253f482d78922948cd178ab35cccbd3eed501a8bcb6c1d1f11a5", kill_on_drop: false }`
[INFO] [stdout] 963222fa4c72253f482d78922948cd178ab35cccbd3eed501a8bcb6c1d1f11a5