[INFO] cloning repository https://github.com/tvolk131/sudoku_solver [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tvolk131/sudoku_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvolk131%2Fsudoku_solver", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvolk131%2Fsudoku_solver'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ff57a004761f3729545ff9082df12a2397b5835c [INFO] checking tvolk131/sudoku_solver against master#bb89df6903539e7014b8db29bccd6a9ee9553122 for pr-121072 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvolk131%2Fsudoku_solver" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tvolk131/sudoku_solver on toolchain bb89df6903539e7014b8db29bccd6a9ee9553122 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bb89df6903539e7014b8db29bccd6a9ee9553122" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/tvolk131/sudoku_solver [INFO] finished tweaking git repo https://github.com/tvolk131/sudoku_solver [INFO] tweaked toml for git repo https://github.com/tvolk131/sudoku_solver written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/tvolk131/sudoku_solver 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" "+bb89df6903539e7014b8db29bccd6a9ee9553122" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] checking tvolk131/sudoku_solver against try#e2d5da3bc6e298ce5f33ab9bd4e47f6a307ec8d0 for pr-121072 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftvolk131%2Fsudoku_solver" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tvolk131/sudoku_solver on toolchain e2d5da3bc6e298ce5f33ab9bd4e47f6a307ec8d0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e2d5da3bc6e298ce5f33ab9bd4e47f6a307ec8d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/tvolk131/sudoku_solver [INFO] finished tweaking git repo https://github.com/tvolk131/sudoku_solver [INFO] tweaked toml for git repo https://github.com/tvolk131/sudoku_solver written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/tvolk131/sudoku_solver 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" "+e2d5da3bc6e298ce5f33ab9bd4e47f6a307ec8d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+e2d5da3bc6e298ce5f33ab9bd4e47f6a307ec8d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3303dfcfe09c040c7f16d1e9ecc13122e47d6b100514c5a81c91d28798c9ec9d [INFO] running `Command { std: "docker" "start" "-a" "3303dfcfe09c040c7f16d1e9ecc13122e47d6b100514c5a81c91d28798c9ec9d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3303dfcfe09c040c7f16d1e9ecc13122e47d6b100514c5a81c91d28798c9ec9d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3303dfcfe09c040c7f16d1e9ecc13122e47d6b100514c5a81c91d28798c9ec9d", kill_on_drop: false }` [INFO] [stdout] 3303dfcfe09c040c7f16d1e9ecc13122e47d6b100514c5a81c91d28798c9ec9d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+e2d5da3bc6e298ce5f33ab9bd4e47f6a307ec8d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a78c7ddc6aab3d44470bf3392efcbac30c3d74650cd5d1f0cdcd97534de6c955 [INFO] running `Command { std: "docker" "start" "-a" "a78c7ddc6aab3d44470bf3392efcbac30c3d74650cd5d1f0cdcd97534de6c955", kill_on_drop: false }` [INFO] [stderr] Checking sudoku_solver v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/puzzle.rs:235:21 [INFO] [stdout] | [INFO] [stdout] 235 | for i in 0..self.get_width() + self.get_block_width() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/puzzle.rs:258:13 [INFO] [stdout] | [INFO] [stdout] 258 | for i in 0..self.get_width() + 2 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/puzzle.rs:235:21 [INFO] [stdout] | [INFO] [stdout] 235 | for i in 0..self.get_width() + self.get_block_width() { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> src/puzzle.rs:258:13 [INFO] [stdout] | [INFO] [stdout] 258 | for i in 0..self.get_width() + 2 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_column` is never used [INFO] [stdout] --> src/puzzle.rs:187:12 [INFO] [stdout] | [INFO] [stdout] 5 | impl SudokuPuzzle { [INFO] [stdout] | ----------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 187 | pub fn get_column(&self, mut column_index: usize) -> Vec<&SudokuPuzzleCell> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_block_column` is never used [INFO] [stdout] --> src/puzzle.rs:341:8 [INFO] [stdout] | [INFO] [stdout] 271 | impl SudokuPuzzleBlock { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 341 | fn get_block_column(&self, column_index: usize) -> Vec<&SudokuPuzzleCell> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_expert_puzzle_1` is never used [INFO] [stdout] --> src/sample_puzzles.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn get_expert_puzzle_1() -> SudokuPuzzle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_insane_puzzle_1` is never used [INFO] [stdout] --> src/sample_puzzles.rs:31:8 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn get_insane_puzzle_1() -> SudokuPuzzle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/puzzle.rs:136:34 [INFO] [stdout] | [INFO] [stdout] 136 | for horizontal_blocks in self.block_rows.get_mut(block_index) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(for_loops_over_fallibles)]` on by default [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 136 | while let Some(horizontal_blocks) = self.block_rows.get_mut(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 136 | if let Some(horizontal_blocks) = self.block_rows.get_mut(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/puzzle.rs:157:34 [INFO] [stdout] | [INFO] [stdout] 157 | for horizontal_blocks in self.block_rows.get(block_index) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 157 | while let Some(horizontal_blocks) = self.block_rows.get(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 157 | if let Some(horizontal_blocks) = self.block_rows.get(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_column` is never used [INFO] [stdout] --> src/puzzle.rs:187:12 [INFO] [stdout] | [INFO] [stdout] 5 | impl SudokuPuzzle { [INFO] [stdout] | ----------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 187 | pub fn get_column(&self, mut column_index: usize) -> Vec<&SudokuPuzzleCell> { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_block_column` is never used [INFO] [stdout] --> src/puzzle.rs:341:8 [INFO] [stdout] | [INFO] [stdout] 271 | impl SudokuPuzzleBlock { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 341 | fn get_block_column(&self, column_index: usize) -> Vec<&SudokuPuzzleCell> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_expert_puzzle_1` is never used [INFO] [stdout] --> src/sample_puzzles.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn get_expert_puzzle_1() -> SudokuPuzzle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_insane_puzzle_1` is never used [INFO] [stdout] --> src/sample_puzzles.rs:31:8 [INFO] [stdout] | [INFO] [stdout] 31 | pub fn get_insane_puzzle_1() -> SudokuPuzzle { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/puzzle.rs:136:34 [INFO] [stdout] | [INFO] [stdout] 136 | for horizontal_blocks in self.block_rows.get_mut(block_index) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(for_loops_over_fallibles)]` on by default [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 136 | while let Some(horizontal_blocks) = self.block_rows.get_mut(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 136 | if let Some(horizontal_blocks) = self.block_rows.get_mut(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: for loop over an `Option`. This is more readably written as an `if let` statement [INFO] [stdout] --> src/puzzle.rs:157:34 [INFO] [stdout] | [INFO] [stdout] 157 | for horizontal_blocks in self.block_rows.get(block_index) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: to check pattern in a loop use `while let` [INFO] [stdout] | [INFO] [stdout] 157 | while let Some(horizontal_blocks) = self.block_rows.get(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~~~~ ~~~ [INFO] [stdout] help: consider using `if let` to clear intent [INFO] [stdout] | [INFO] [stdout] 157 | if let Some(horizontal_blocks) = self.block_rows.get(block_index) { [INFO] [stdout] | ~~~~~~~~~~~~ ~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s [INFO] running `Command { std: "docker" "inspect" "a78c7ddc6aab3d44470bf3392efcbac30c3d74650cd5d1f0cdcd97534de6c955", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a78c7ddc6aab3d44470bf3392efcbac30c3d74650cd5d1f0cdcd97534de6c955", kill_on_drop: false }` [INFO] [stdout] a78c7ddc6aab3d44470bf3392efcbac30c3d74650cd5d1f0cdcd97534de6c955