[INFO] cloning repository https://github.com/perryqh/sudoku-solver-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/perryqh/sudoku-solver-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperryqh%2Fsudoku-solver-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperryqh%2Fsudoku-solver-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 836453dcff39c26dae658817272f2357f855d9bb
[INFO] testing perryqh/sudoku-solver-rust against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperryqh%2Fsudoku-solver-rust" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/perryqh/sudoku-solver-rust on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/perryqh/sudoku-solver-rust
[INFO] finished tweaking git repo https://github.com/perryqh/sudoku-solver-rust
[INFO] tweaked toml for git repo https://github.com/perryqh/sudoku-solver-rust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/perryqh/sudoku-solver-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a9006424276fe985a60a1c7fcd930a9e5f79896f43965274dcc2565a683b83cf
[INFO] running `Command { std: "docker" "start" "-a" "a9006424276fe985a60a1c7fcd930a9e5f79896f43965274dcc2565a683b83cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9006424276fe985a60a1c7fcd930a9e5f79896f43965274dcc2565a683b83cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9006424276fe985a60a1c7fcd930a9e5f79896f43965274dcc2565a683b83cf", kill_on_drop: false }`
[INFO] [stdout] a9006424276fe985a60a1c7fcd930a9e5f79896f43965274dcc2565a683b83cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 566320e8e8b7696add3516179166c36191e6e808c8cc6b682997edacfa4b923a
[INFO] running `Command { std: "docker" "start" "-a" "566320e8e8b7696add3516179166c36191e6e808c8cc6b682997edacfa4b923a", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `test_board`
[INFO] [stdout]   --> src/solver.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn test_board() -> [[i8; 9]; 9] {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `almost_solved_test_board`
[INFO] [stdout]   --> src/solver.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn almost_solved_test_board() -> [[i8; 9]; 9] {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `Command { std: "docker" "inspect" "566320e8e8b7696add3516179166c36191e6e808c8cc6b682997edacfa4b923a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "566320e8e8b7696add3516179166c36191e6e808c8cc6b682997edacfa4b923a", kill_on_drop: false }`
[INFO] [stdout] 566320e8e8b7696add3516179166c36191e6e808c8cc6b682997edacfa4b923a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5cd4859964839f847b3796bcae14712ded6c86e0fc7bdf8a27e297a340f5895
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b5cd4859964839f847b3796bcae14712ded6c86e0fc7bdf8a27e297a340f5895", kill_on_drop: false }`
[INFO] [stdout] warning: function is never used: `test_board`
[INFO] [stdout]   --> src/solver.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn test_board() -> [[i8; 9]; 9] {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `almost_solved_test_board`
[INFO] [stdout]   --> src/solver.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn almost_solved_test_board() -> [[i8; 9]; 9] {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "b5cd4859964839f847b3796bcae14712ded6c86e0fc7bdf8a27e297a340f5895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5cd4859964839f847b3796bcae14712ded6c86e0fc7bdf8a27e297a340f5895", kill_on_drop: false }`
[INFO] [stdout] b5cd4859964839f847b3796bcae14712ded6c86e0fc7bdf8a27e297a340f5895
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 32261f314335ff7e8f556162b563efd56c03ac6111cce4ab1f58f533ab599860
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "32261f314335ff7e8f556162b563efd56c03ac6111cce4ab1f58f533ab599860", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `test_board`
[INFO] [stderr]   --> src/solver.rs:79:4
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn test_board() -> [[i8; 9]; 9] {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `almost_solved_test_board`
[INFO] [stderr]   --> src/solver.rs:93:4
[INFO] [stderr]    |
[INFO] [stderr] 93 | fn almost_solved_test_board() -> [[i8; 9]; 9] {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku-solver` (lib) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_solver-abf938028159496f)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test solver::returns_invalid_for_8_6_1 ... ok
[INFO] [stdout] test solver::returns_invalid_for_another_dupe_in_column_and_three_by_three ... ok
[INFO] [stdout] test solver::returns_invalid_for_dupe_in_column ... ok
[INFO] [stdout] test solver::returns_board_easy ... ok
[INFO] [stdout] test solver::returns_invalid_for_dupe_in_column_and_last_three_by_three ... ok
[INFO] [stdout] test solver::returns_invalid_for_dupe_in_column_and_three_by_three ... ok
[INFO] [stdout] test solver::returns_invalid_for_dupe_in_row ... ok
[INFO] [stdout] test solver::returns_invalid_for_dupe_in_three_by_three ... ok
[INFO] [stdout] test solver::returns_valid_for_0_3_2 ... ok
[INFO] [stdout] test solver::returns_solved_board ... ok
[INFO] [stdout] test solver::returns_invalid_for_dupe_in_column_and_row ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_solver-89a80049d5041cad)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sudoku-solver
[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" "32261f314335ff7e8f556162b563efd56c03ac6111cce4ab1f58f533ab599860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32261f314335ff7e8f556162b563efd56c03ac6111cce4ab1f58f533ab599860", kill_on_drop: false }`
[INFO] [stdout] 32261f314335ff7e8f556162b563efd56c03ac6111cce4ab1f58f533ab599860