[INFO] fetching crate sudoku_lib 0.2.9...
[INFO] testing sudoku_lib-0.2.9 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sudoku_lib 0.2.9 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate sudoku_lib 0.2.9
[INFO] finished tweaking crates.io crate sudoku_lib 0.2.9
[INFO] tweaked toml for crates.io crate sudoku_lib 0.2.9 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sudoku_lib 0.2.9 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 11 packages to latest compatible versions
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 28dfca6d361e8241bfa1138fda937fe4ba7fb9c3ea8d334233d2238ae1de9c08
[INFO] running `Command { std: "docker" "start" "-a" "28dfca6d361e8241bfa1138fda937fe4ba7fb9c3ea8d334233d2238ae1de9c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28dfca6d361e8241bfa1138fda937fe4ba7fb9c3ea8d334233d2238ae1de9c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28dfca6d361e8241bfa1138fda937fe4ba7fb9c3ea8d334233d2238ae1de9c08", kill_on_drop: false }`
[INFO] [stdout] 28dfca6d361e8241bfa1138fda937fe4ba7fb9c3ea8d334233d2238ae1de9c08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 49fabd8212b70275dd77fbbd269ae8ee6256ddc2fb77c26449b7e261ebd3c774
[INFO] running `Command { std: "docker" "start" "-a" "49fabd8212b70275dd77fbbd269ae8ee6256ddc2fb77c26449b7e261ebd3c774", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling sudoku_lib v0.2.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "49fabd8212b70275dd77fbbd269ae8ee6256ddc2fb77c26449b7e261ebd3c774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49fabd8212b70275dd77fbbd269ae8ee6256ddc2fb77c26449b7e261ebd3c774", kill_on_drop: false }`
[INFO] [stdout] 49fabd8212b70275dd77fbbd269ae8ee6256ddc2fb77c26449b7e261ebd3c774
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7b398085555f237b6badd2d3ed2eb10d488cebed9ef2be8bd9c3f2c8d2c84c6a
[INFO] running `Command { std: "docker" "start" "-a" "7b398085555f237b6badd2d3ed2eb10d488cebed9ef2be8bd9c3f2c8d2c84c6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku_lib v0.2.9 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "7b398085555f237b6badd2d3ed2eb10d488cebed9ef2be8bd9c3f2c8d2c84c6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b398085555f237b6badd2d3ed2eb10d488cebed9ef2be8bd9c3f2c8d2c84c6a", kill_on_drop: false }`
[INFO] [stdout] 7b398085555f237b6badd2d3ed2eb10d488cebed9ef2be8bd9c3f2c8d2c84c6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2e26fff9df1ff06c31d02d5411d59a6c6c7d30857652ae883f4de857623a6a5d
[INFO] running `Command { std: "docker" "start" "-a" "2e26fff9df1ff06c31d02d5411d59a6c6c7d30857652ae883f4de857623a6a5d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sudoku_lib-26132053584e47f4)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test board::tests::get_block ... ok
[INFO] [stdout] test board::tests::get_column ... ok
[INFO] [stdout] test board::tests::has_correct_display_format ... ok
[INFO] [stdout] test board::tests::is_not_valid ... ok
[INFO] [stdout] test value::tests::serialized_format ... ok
[INFO] [stdout] test value::tests::value_option_format ... ok
[INFO] [stdout] test board::tests::is_valid ... ok
[INFO] [stdout] test board::tests::get_row ... ok
[INFO] [stdout] test chunk::tests::chunk_has_repetitions ... ok
[INFO] [stdout] test board::tests::set_column ... ok
[INFO] [stdout] test board::tests::set_row ... ok
[INFO] [stdout] test board::tests::set_block ... ok
[INFO] [stdout] test chunk::tests::chunk_has_no_repetitions ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sudoku_lib
[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" "2e26fff9df1ff06c31d02d5411d59a6c6c7d30857652ae883f4de857623a6a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e26fff9df1ff06c31d02d5411d59a6c6c7d30857652ae883f4de857623a6a5d", kill_on_drop: false }`
[INFO] [stdout] 2e26fff9df1ff06c31d02d5411d59a6c6c7d30857652ae883f4de857623a6a5d
