[INFO] cloning repository https://github.com/nareshganduri/sudoku-solver-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nareshganduri/sudoku-solver-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnareshganduri%2Fsudoku-solver-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnareshganduri%2Fsudoku-solver-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebf9087b4385681872ff45b23a837486c10bc4a9
[INFO] testing nareshganduri/sudoku-solver-rs against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnareshganduri%2Fsudoku-solver-rs" "/workspace/builds/worker-116/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-116/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nareshganduri/sudoku-solver-rs on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nareshganduri/sudoku-solver-rs
[INFO] finished tweaking git repo https://github.com/nareshganduri/sudoku-solver-rs
[INFO] tweaked toml for git repo https://github.com/nareshganduri/sudoku-solver-rs written to /workspace/builds/worker-116/source/Cargo.toml
[INFO] crate git repo https://github.com/nareshganduri/sudoku-solver-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 241ded18af155f93467572f33469b729efc079e8b6ce411f464765156dcb118f
[INFO] running `Command { std: "docker" "start" "-a" "241ded18af155f93467572f33469b729efc079e8b6ce411f464765156dcb118f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "241ded18af155f93467572f33469b729efc079e8b6ce411f464765156dcb118f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "241ded18af155f93467572f33469b729efc079e8b6ce411f464765156dcb118f", kill_on_drop: false }`
[INFO] [stdout] 241ded18af155f93467572f33469b729efc079e8b6ce411f464765156dcb118f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb88a797edd2713a442fe73074d355ef41905071a6fc9d7b408c31e1ca3799b1
[INFO] running `Command { std: "docker" "start" "-a" "cb88a797edd2713a442fe73074d355ef41905071a6fc9d7b408c31e1ca3799b1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/graph.rs:43:57
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut grid: [Vertex; 81] = unsafe { std::mem::uninitialized() };
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `found`
[INFO] [stdout]  --> src/sudoku/parser.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Expected { found: u8, needed: u8 },
[INFO] [stdout]   |                ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `needed`
[INFO] [stdout]  --> src/sudoku/parser.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Expected { found: u8, needed: u8 },
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `line_no`
[INFO] [stdout]   --> src/sudoku/parser.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     line_no: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pos`
[INFO] [stdout]   --> src/sudoku/parser.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pos: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]   --> src/sudoku/parser.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     kind: ErrorKind,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.91s
[INFO] running `Command { std: "docker" "inspect" "cb88a797edd2713a442fe73074d355ef41905071a6fc9d7b408c31e1ca3799b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb88a797edd2713a442fe73074d355ef41905071a6fc9d7b408c31e1ca3799b1", kill_on_drop: false }`
[INFO] [stdout] cb88a797edd2713a442fe73074d355ef41905071a6fc9d7b408c31e1ca3799b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8aae572f261578365f3313ad92513518415fed8edf1fee7cef363bdcab0ecbb3
[INFO] running `Command { std: "docker" "start" "-a" "8aae572f261578365f3313ad92513518415fed8edf1fee7cef363bdcab0ecbb3", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/graph.rs:43:57
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut grid: [Vertex; 81] = unsafe { std::mem::uninitialized() };
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `found`
[INFO] [stdout]  --> src/sudoku/parser.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Expected { found: u8, needed: u8 },
[INFO] [stdout]   |                ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `needed`
[INFO] [stdout]  --> src/sudoku/parser.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Expected { found: u8, needed: u8 },
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `line_no`
[INFO] [stdout]   --> src/sudoku/parser.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     line_no: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pos`
[INFO] [stdout]   --> src/sudoku/parser.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pos: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]   --> src/sudoku/parser.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     kind: ErrorKind,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/graph.rs:43:57
[INFO] [stdout]    |
[INFO] [stdout] 43 |         let mut grid: [Vertex; 81] = unsafe { std::mem::uninitialized() };
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `found`
[INFO] [stdout]  --> src/sudoku/parser.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Expected { found: u8, needed: u8 },
[INFO] [stdout]   |                ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `needed`
[INFO] [stdout]  --> src/sudoku/parser.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Expected { found: u8, needed: u8 },
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `line_no`
[INFO] [stdout]   --> src/sudoku/parser.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     line_no: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pos`
[INFO] [stdout]   --> src/sudoku/parser.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pos: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `kind`
[INFO] [stdout]   --> src/sudoku/parser.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     kind: ErrorKind,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "8aae572f261578365f3313ad92513518415fed8edf1fee7cef363bdcab0ecbb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8aae572f261578365f3313ad92513518415fed8edf1fee7cef363bdcab0ecbb3", kill_on_drop: false }`
[INFO] [stdout] 8aae572f261578365f3313ad92513518415fed8edf1fee7cef363bdcab0ecbb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2333233c57cfb702016d3c163aa05f0c077635815d36711fccb794438713eb1f
[INFO] running `Command { std: "docker" "start" "-a" "2333233c57cfb702016d3c163aa05f0c077635815d36711fccb794438713eb1f", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/graph.rs:43:57
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let mut grid: [Vertex; 81] = unsafe { std::mem::uninitialized() };
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `found`
[INFO] [stderr]  --> src/sudoku/parser.rs:6:16
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Expected { found: u8, needed: u8 },
[INFO] [stderr]   |                ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `needed`
[INFO] [stderr]  --> src/sudoku/parser.rs:6:27
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Expected { found: u8, needed: u8 },
[INFO] [stderr]   |                           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `line_no`
[INFO] [stderr]   --> src/sudoku/parser.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     line_no: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pos`
[INFO] [stderr]   --> src/sudoku/parser.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pos: usize,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `kind`
[INFO] [stderr]   --> src/sudoku/parser.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     kind: ErrorKind,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku-solver` (lib) generated 6 warnings
[INFO] [stderr] warning: `sudoku-solver` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_solver-d5c89e64ae7960ae)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test sudoku::tests::test_parse ... ok
[INFO] [stdout] test tests::test_solve ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_solver-921dadcb67af04c8)
[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] [stderr]    Doc-tests sudoku-solver
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - solve (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2333233c57cfb702016d3c163aa05f0c077635815d36711fccb794438713eb1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2333233c57cfb702016d3c163aa05f0c077635815d36711fccb794438713eb1f", kill_on_drop: false }`
[INFO] [stdout] 2333233c57cfb702016d3c163aa05f0c077635815d36711fccb794438713eb1f