[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 master#404c8471aba60c2d837fa728e7c729a0f52d5830 for pr-87041-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnareshganduri%2Fsudoku-solver-rs" "/workspace/builds/worker-34/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-34/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nareshganduri/sudoku-solver-rs on toolchain 404c8471aba60c2d837fa728e7c729a0f52d5830
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "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-34/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" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50c7fbbb9349c686eff9e055e09522d790c46588f1732d95602980bb16b0d1bb
[INFO] running `Command { std: "docker" "start" "-a" "50c7fbbb9349c686eff9e055e09522d790c46588f1732d95602980bb16b0d1bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50c7fbbb9349c686eff9e055e09522d790c46588f1732d95602980bb16b0d1bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50c7fbbb9349c686eff9e055e09522d790c46588f1732d95602980bb16b0d1bb", kill_on_drop: false }`
[INFO] [stdout] 50c7fbbb9349c686eff9e055e09522d790c46588f1732d95602980bb16b0d1bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cee3b0f7b6258572732a7f9136b2af07ece1d9e5571216766b4411b879206661
[INFO] running `Command { std: "docker" "start" "-a" "cee3b0f7b6258572732a7f9136b2af07ece1d9e5571216766b4411b879206661", 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 4.20s
[INFO] running `Command { std: "docker" "inspect" "cee3b0f7b6258572732a7f9136b2af07ece1d9e5571216766b4411b879206661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cee3b0f7b6258572732a7f9136b2af07ece1d9e5571216766b4411b879206661", kill_on_drop: false }`
[INFO] [stdout] cee3b0f7b6258572732a7f9136b2af07ece1d9e5571216766b4411b879206661
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ac36f1c0dcaa979cef7f6008cac268c52cc6ede204d92e0b48b9df9a6e8f5cf
[INFO] running `Command { std: "docker" "start" "-a" "6ac36f1c0dcaa979cef7f6008cac268c52cc6ede204d92e0b48b9df9a6e8f5cf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 1.41s
[INFO] running `Command { std: "docker" "inspect" "6ac36f1c0dcaa979cef7f6008cac268c52cc6ede204d92e0b48b9df9a6e8f5cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ac36f1c0dcaa979cef7f6008cac268c52cc6ede204d92e0b48b9df9a6e8f5cf", kill_on_drop: false }`
[INFO] [stdout] 6ac36f1c0dcaa979cef7f6008cac268c52cc6ede204d92e0b48b9df9a6e8f5cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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:a429bb59b7a3b4e7270a4b4c243bb115fc561d8f62ec34ef63a0a36cabf65dfd" "/opt/rustwide/cargo-home/bin/cargo" "+404c8471aba60c2d837fa728e7c729a0f52d5830" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c17205bbf47854bf723fdd8d55b1a702455f425d6bbbc26e8f56b0ee156de1ea
[INFO] running `Command { std: "docker" "start" "-a" "c17205bbf47854bf723fdd8d55b1a702455f425d6bbbc26e8f56b0ee156de1ea", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_solver-abf938028159496f)
[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 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sudoku_solver-89a80049d5041cad)
[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 0.50s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c17205bbf47854bf723fdd8d55b1a702455f425d6bbbc26e8f56b0ee156de1ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c17205bbf47854bf723fdd8d55b1a702455f425d6bbbc26e8f56b0ee156de1ea", kill_on_drop: false }`
[INFO] [stdout] c17205bbf47854bf723fdd8d55b1a702455f425d6bbbc26e8f56b0ee156de1ea