[INFO] cloning repository https://github.com/debasish-raychawdhuri/sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/debasish-raychawdhuri/sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebasish-raychawdhuri%2Fsudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebasish-raychawdhuri%2Fsudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8228e49c70a66a01128ec2ef3dd9166dc6e8877d
[INFO] checking debasish-raychawdhuri/sudoku against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdebasish-raychawdhuri%2Fsudoku" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/debasish-raychawdhuri/sudoku
[INFO] finished tweaking git repo https://github.com/debasish-raychawdhuri/sudoku
[INFO] tweaked toml for git repo https://github.com/debasish-raychawdhuri/sudoku written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/debasish-raychawdhuri/sudoku on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/debasish-raychawdhuri/sudoku 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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded z3 v0.12.1
[INFO] [stderr]   Downloaded bindgen v0.66.1
[INFO] [stderr]   Downloaded z3-sys v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cc80d7bd854f54176ca21bda48d87e375c9571e5d89ba5db763d6d4f6496700
[INFO] running `Command { std: "docker" "start" "-a" "8cc80d7bd854f54176ca21bda48d87e375c9571e5d89ba5db763d6d4f6496700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cc80d7bd854f54176ca21bda48d87e375c9571e5d89ba5db763d6d4f6496700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cc80d7bd854f54176ca21bda48d87e375c9571e5d89ba5db763d6d4f6496700", kill_on_drop: false }`
[INFO] [stdout] 8cc80d7bd854f54176ca21bda48d87e375c9571e5d89ba5db763d6d4f6496700
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7729f304734bb30af26d720ee7b52191c304473559ea06c46a7fd7f39dcc677d
[INFO] running `Command { std: "docker" "start" "-a" "7729f304734bb30af26d720ee7b52191c304473559ea06c46a7fd7f39dcc677d", kill_on_drop: false }`
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling bindgen v0.66.1
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]    Compiling libloading v0.8.6
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling z3-sys v0.8.1
[INFO] [stderr]     Checking z3 v0.12.1
[INFO] [stderr]     Checking sudoku v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]  --> src/naive_solver.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn solve(sudoku_problem: &[Vec<i32>]) -> Result<Vec<Vec<i32>>, &'static str> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_sudoku` is never used
[INFO] [stdout]   --> src/naive_solver.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn solve_sudoku(sudoku_problem: &[[i32; 9]; 9]) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_next_empty` is never used
[INFO] [stdout]   --> src/naive_solver.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn find_next_empty(sudoku: &[Vec<i32>]) -> (usize, usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_move` is never used
[INFO] [stdout]   --> src/naive_solver.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn is_valid_move(sudoku: &[Vec<i32>], row: usize, col: usize, num: i32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]  --> src/naive_solver.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn solve(sudoku_problem: &[Vec<i32>]) -> Result<Vec<Vec<i32>>, &'static str> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_sudoku` is never used
[INFO] [stdout]   --> src/naive_solver.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn solve_sudoku(sudoku_problem: &[[i32; 9]; 9]) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_next_empty` is never used
[INFO] [stdout]   --> src/naive_solver.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn find_next_empty(sudoku: &[Vec<i32>]) -> (usize, usize) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_move` is never used
[INFO] [stdout]   --> src/naive_solver.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn is_valid_move(sudoku: &[Vec<i32>], row: usize, col: usize, num: i32) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 31.65s
[INFO] running `Command { std: "docker" "inspect" "7729f304734bb30af26d720ee7b52191c304473559ea06c46a7fd7f39dcc677d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7729f304734bb30af26d720ee7b52191c304473559ea06c46a7fd7f39dcc677d", kill_on_drop: false }`
[INFO] [stdout] 7729f304734bb30af26d720ee7b52191c304473559ea06c46a7fd7f39dcc677d
