[INFO] fetching crate hudoku 0.0.1...
[INFO] checking hudoku-0.0.1 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate hudoku 0.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate hudoku 0.0.1 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hudoku 0.0.1
[INFO] finished tweaking crates.io crate hudoku 0.0.1
[INFO] tweaked toml for crates.io crate hudoku 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 94 packages to latest compatible versions
[INFO] [stderr]       Adding anes v0.1.6 (latest: v0.2.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.13.0)
[INFO] [stderr]       Adding windows-sys v0.52.0 (latest: v0.59.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52269d29135164599ce046a9ddad2c7358b5497c73bbf4f1a3d5663e33b511db
[INFO] running `Command { std: "docker" "start" "-a" "52269d29135164599ce046a9ddad2c7358b5497c73bbf4f1a3d5663e33b511db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52269d29135164599ce046a9ddad2c7358b5497c73bbf4f1a3d5663e33b511db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52269d29135164599ce046a9ddad2c7358b5497c73bbf4f1a3d5663e33b511db", kill_on_drop: false }`
[INFO] [stdout] 52269d29135164599ce046a9ddad2c7358b5497c73bbf4f1a3d5663e33b511db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc42ac8041e2f9df5505c8e39c9e6559386c42a450407dfe12cc1d5324d45a37
[INFO] running `Command { std: "docker" "start" "-a" "bc42ac8041e2f9df5505c8e39c9e6559386c42a450407dfe12cc1d5324d45a37", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.93
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling wasm-bindgen v0.2.93
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling serde_json v1.0.127
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[INFO] [stderr]     Checking oorandom v11.1.4
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.93
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.43
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.93
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.93
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking js-sys v0.3.70
[INFO] [stderr]     Checking hudoku v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `comb`
[INFO] [stdout]  --> src/solver/single_digit_patterns/rectangle_elimination.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::utils::{comb, NamedCellSet};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]   --> src/solver/fish/mutant_fish.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use itertools::Itertools;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/solver/fish/mutant_fish.rs:44:34
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let ref mut on_unselected = |pos: usize, element: usize| {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/solver/fish/mutant_fish.rs:82:38
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let ref mut on_unselected = |pos: usize, element: usize| {
[INFO] [stdout]    |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `element`
[INFO] [stdout]   --> src/solver/fish/mutant_fish.rs:82:50
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let ref mut on_unselected = |pos: usize, element: usize| {
[INFO] [stdout]    |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_element`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cols`
[INFO] [stdout]   --> src/solver/single_digit_patterns/rectangle_elimination.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     cols: &[NamedCellSet],
[INFO] [stdout]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_cols`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `skip_unselected` is never read
[INFO] [stdout]    --> src/utils/combination_generator.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 skip_unselected = false;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `candidate_cells_in_blocks` is never used
[INFO] [stdout]    --> src/solver.rs:153:19
[INFO] [stdout]     |
[INFO] [stdout] 43  | impl SudokuSolver {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 153 |     pub(crate) fn candidate_cells_in_blocks(&self, value: CellValue) -> &[NamedCellSet] {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/sudoku.rs:281:19
[INFO] [stdout]     |
[INFO] [stdout] 280 | impl StepPosition {
[INFO] [stdout]     | ----------------- associated function in this implementation
[INFO] [stdout] 281 |     pub(crate) fn new(reason: String, cell_index: CellIndex, value: CellValue) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking serde_spanned v0.6.7
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.43
[INFO] [stderr]     Checking toml_edit v0.22.20
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.43
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]     Checking toml v0.8.19
[INFO] [stdout] warning: unused import: `comb`
[INFO] [stdout]  --> src/solver/single_digit_patterns/rectangle_elimination.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::utils::{comb, NamedCellSet};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]   --> src/solver/fish/mutant_fish.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use itertools::Itertools;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/solver/fish/mutant_fish.rs:44:34
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let ref mut on_unselected = |pos: usize, element: usize| {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]   --> src/solver/fish/mutant_fish.rs:82:38
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let ref mut on_unselected = |pos: usize, element: usize| {
[INFO] [stdout]    |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `element`
[INFO] [stdout]   --> src/solver/fish/mutant_fish.rs:82:50
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let ref mut on_unselected = |pos: usize, element: usize| {
[INFO] [stdout]    |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_element`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cols`
[INFO] [stdout]   --> src/solver/single_digit_patterns/rectangle_elimination.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     cols: &[NamedCellSet],
[INFO] [stdout]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_cols`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `skip_unselected` is never read
[INFO] [stdout]    --> src/utils/combination_generator.rs:100:17
[INFO] [stdout]     |
[INFO] [stdout] 100 |                 skip_unselected = false;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/utils/combination_generator.rs:150:44
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let ref mut on_element_selected = |pos, element| {
[INFO] [stdout]     |                                            ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/utils/combination_generator.rs:157:46
[INFO] [stdout]     |
[INFO] [stdout] 157 |         let ref mut on_element_unselected = |pos, element| {
[INFO] [stdout]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `candidate_cells_in_blocks` is never used
[INFO] [stdout]    --> src/solver.rs:153:19
[INFO] [stdout]     |
[INFO] [stdout] 43  | impl SudokuSolver {
[INFO] [stdout]     | ----------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 153 |     pub(crate) fn candidate_cells_in_blocks(&self, value: CellValue) -> &[NamedCellSet] {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/sudoku.rs:281:19
[INFO] [stdout]     |
[INFO] [stdout] 280 | impl StepPosition {
[INFO] [stdout]     | ----------------- associated function in this implementation
[INFO] [stdout] 281 |     pub(crate) fn new(reason: String, cell_index: CellIndex, value: CellValue) -> Self {
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.75s
[INFO] running `Command { std: "docker" "inspect" "bc42ac8041e2f9df5505c8e39c9e6559386c42a450407dfe12cc1d5324d45a37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc42ac8041e2f9df5505c8e39c9e6559386c42a450407dfe12cc1d5324d45a37", kill_on_drop: false }`
[INFO] [stdout] bc42ac8041e2f9df5505c8e39c9e6559386c42a450407dfe12cc1d5324d45a37