[INFO] cloning repository https://github.com/Ti-Mo98/SudokuSolver_Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ti-Mo98/SudokuSolver_Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTi-Mo98%2FSudokuSolver_Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTi-Mo98%2FSudokuSolver_Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98a55286d7389775a113d85d25f6d98fce05ec45
[INFO] checking Ti-Mo98/SudokuSolver_Rust against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTi-Mo98%2FSudokuSolver_Rust" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ti-Mo98/SudokuSolver_Rust on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ti-Mo98/SudokuSolver_Rust
[INFO] finished tweaking git repo https://github.com/Ti-Mo98/SudokuSolver_Rust
[INFO] tweaked toml for git repo https://github.com/Ti-Mo98/SudokuSolver_Rust written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Ti-Mo98/SudokuSolver_Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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] 78eaec358702ebaea5e2e8b314778cd8e953b04d3cbe39ebd453113c4b3c59d4
[INFO] running `Command { std: "docker" "start" "-a" "78eaec358702ebaea5e2e8b314778cd8e953b04d3cbe39ebd453113c4b3c59d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78eaec358702ebaea5e2e8b314778cd8e953b04d3cbe39ebd453113c4b3c59d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78eaec358702ebaea5e2e8b314778cd8e953b04d3cbe39ebd453113c4b3c59d4", kill_on_drop: false }`
[INFO] [stdout] 78eaec358702ebaea5e2e8b314778cd8e953b04d3cbe39ebd453113c4b3c59d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a55206cb7c03f6d9cbf7bf9859f316a5fdb2baf750a95036acf5e85d687d7e3a
[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" "a55206cb7c03f6d9cbf7bf9859f316a5fdb2baf750a95036acf5e85d687d7e3a", kill_on_drop: false }`
[INFO] [stderr]     Checking SudokuSolver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `new`
[INFO] [stdout]  --> src/sudoku.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn new() -> Sudoku {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]   --> src/sudoku.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn solve(sudoku: Sudoku) -> Sudoku {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_valid`
[INFO] [stdout]   --> src/sudoku.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn number_valid(sudoku: &Sudoku, x: i8, y: i8, number: i8) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_valid_for_row`
[INFO] [stdout]   --> src/sudoku.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn number_valid_for_row(sudoku: &Sudoku, row: usize, number: i8) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_valid_for_col`
[INFO] [stdout]   --> src/sudoku.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn number_valid_for_col(sudoku: &Sudoku, col: usize, number: i8) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_valid_for_area`
[INFO] [stdout]   --> src/sudoku.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn number_valid_for_area(sudoku: &Sudoku, x: usize, y: usize, number: i8) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `SudokuSolver` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `sudoku_solver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new`
[INFO] [stdout]  --> src/sudoku.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn new() -> Sudoku {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]   --> src/sudoku.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn solve(sudoku: Sudoku) -> Sudoku {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_valid`
[INFO] [stdout]   --> src/sudoku.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn number_valid(sudoku: &Sudoku, x: i8, y: i8, number: i8) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_valid_for_row`
[INFO] [stdout]   --> src/sudoku.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn number_valid_for_row(sudoku: &Sudoku, row: usize, number: i8) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_valid_for_col`
[INFO] [stdout]   --> src/sudoku.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn number_valid_for_col(sudoku: &Sudoku, col: usize, number: i8) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_valid_for_area`
[INFO] [stdout]   --> src/sudoku.rs:50:4
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn number_valid_for_area(sudoku: &Sudoku, x: usize, y: usize, number: i8) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `SudokuSolver` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `sudoku_solver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "a55206cb7c03f6d9cbf7bf9859f316a5fdb2baf750a95036acf5e85d687d7e3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a55206cb7c03f6d9cbf7bf9859f316a5fdb2baf750a95036acf5e85d687d7e3a", kill_on_drop: false }`
[INFO] [stdout] a55206cb7c03f6d9cbf7bf9859f316a5fdb2baf750a95036acf5e85d687d7e3a