[INFO] cloning repository https://github.com/m-squared96/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/m-squared96/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-squared96%2Fsudoku-solver", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-squared96%2Fsudoku-solver'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4360ead5e4fef6703cf47734ccd01c25220c75a1 [INFO] building m-squared96/sudoku-solver against master#222c5724ecc922fe67815f428c19f82c129d9386 for pr-97334 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-squared96%2Fsudoku-solver" "/workspace/builds/worker-16/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-16/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/m-squared96/sudoku-solver on toolchain 222c5724ecc922fe67815f428c19f82c129d9386 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/m-squared96/sudoku-solver [INFO] finished tweaking git repo https://github.com/m-squared96/sudoku-solver [INFO] tweaked toml for git repo https://github.com/m-squared96/sudoku-solver written to /workspace/builds/worker-16/source/Cargo.toml [INFO] crate git repo https://github.com/m-squared96/sudoku-solver already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded libc v0.2.60 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9d316041ffcdc253a6e76a22acf79667d7afe22cb8cd62ff6dfdefa812c8e21b [INFO] running `Command { std: "docker" "start" "-a" "9d316041ffcdc253a6e76a22acf79667d7afe22cb8cd62ff6dfdefa812c8e21b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9d316041ffcdc253a6e76a22acf79667d7afe22cb8cd62ff6dfdefa812c8e21b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d316041ffcdc253a6e76a22acf79667d7afe22cb8cd62ff6dfdefa812c8e21b", kill_on_drop: false }` [INFO] [stdout] 9d316041ffcdc253a6e76a22acf79667d7afe22cb8cd62ff6dfdefa812c8e21b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fe5a36d651282652fff57e190976d77e3dac4b5af7673b40672fc9de428e2dcd [INFO] running `Command { std: "docker" "start" "-a" "fe5a36d651282652fff57e190976d77e3dac4b5af7673b40672fc9de428e2dcd", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.60 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling rand v0.3.23 [INFO] [stderr] Compiling sudoku_solver_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `filepath` is never read [INFO] [stdout] --> src/main.rs:377:13 [INFO] [stdout] | [INFO] [stdout] 377 | let mut filepath: Option = Some(String::new()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `command_flag` is never read [INFO] [stdout] --> src/main.rs:535:13 [INFO] [stdout] | [INFO] [stdout] 535 | let mut command_flag = String::new(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `board` is never read [INFO] [stdout] --> src/main.rs:544:13 [INFO] [stdout] | [INFO] [stdout] 544 | let mut board: Option>> = Some(Vec::new()); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:464:9 [INFO] [stdout] | [INFO] [stdout] 464 | let mut output_file = fs::File::create(filepath.as_str()).unwrap(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `output_puzzle` [INFO] [stdout] --> src/main.rs:449:4 [INFO] [stdout] | [INFO] [stdout] 449 | fn output_puzzle(args: Vec) -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:475:9 [INFO] [stdout] | [INFO] [stdout] 475 | write!(&mut writer, "{}", line_string); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.06s [INFO] running `Command { std: "docker" "inspect" "fe5a36d651282652fff57e190976d77e3dac4b5af7673b40672fc9de428e2dcd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fe5a36d651282652fff57e190976d77e3dac4b5af7673b40672fc9de428e2dcd", kill_on_drop: false }` [INFO] [stdout] fe5a36d651282652fff57e190976d77e3dac4b5af7673b40672fc9de428e2dcd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4f18cd0aaf7f9e623487c9aaca127f51b15e5a4583be7d0c585e6ccfabe1de3f [INFO] running `Command { std: "docker" "start" "-a" "4f18cd0aaf7f9e623487c9aaca127f51b15e5a4583be7d0c585e6ccfabe1de3f", kill_on_drop: false }` [INFO] [stderr] Compiling sudoku_solver_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `filepath` is never read [INFO] [stdout] --> src/main.rs:377:13 [INFO] [stdout] | [INFO] [stdout] 377 | let mut filepath: Option = Some(String::new()); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `command_flag` is never read [INFO] [stdout] --> src/main.rs:535:13 [INFO] [stdout] | [INFO] [stdout] 535 | let mut command_flag = String::new(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `board` is never read [INFO] [stdout] --> src/main.rs:544:13 [INFO] [stdout] | [INFO] [stdout] 544 | let mut board: Option>> = Some(Vec::new()); [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:464:9 [INFO] [stdout] | [INFO] [stdout] 464 | let mut output_file = fs::File::create(filepath.as_str()).unwrap(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `output_puzzle` [INFO] [stdout] --> src/main.rs:449:4 [INFO] [stdout] | [INFO] [stdout] 449 | fn output_puzzle(args: Vec) -> Vec> { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:475:9 [INFO] [stdout] | [INFO] [stdout] 475 | write!(&mut writer, "{}", line_string); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.70s [INFO] [stderr] Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/sudoku_solver_rust-c1be2e4417759a43) [INFO] running `Command { std: "docker" "inspect" "4f18cd0aaf7f9e623487c9aaca127f51b15e5a4583be7d0c585e6ccfabe1de3f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4f18cd0aaf7f9e623487c9aaca127f51b15e5a4583be7d0c585e6ccfabe1de3f", kill_on_drop: false }` [INFO] [stdout] 4f18cd0aaf7f9e623487c9aaca127f51b15e5a4583be7d0c585e6ccfabe1de3f