[INFO] fetching crate hudoku 0.0.1...
[INFO] testing hudoku-0.0.1 against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] extracting crate hudoku 0.0.1 into /workspace/builds/worker-5-tc1/source
[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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hudoku 0.0.1 on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 96 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.8.2)
[INFO] [stderr]       Adding itertools v0.13.0 (available: v0.14.0)
[INFO] [stderr]       Adding toml v0.8.23 (available: v1.1.0+spec-1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memory_units v0.4.0
[INFO] [stderr]   Downloaded wasm-bindgen-test-macro v0.3.65
[INFO] [stderr]   Downloaded wasm-bindgen-test-shared v0.2.115
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[INFO] [stderr]   Downloaded minicov v0.3.8
[INFO] [stderr]   Downloaded wee_alloc v0.4.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] baa65f11e37e1031e14826e6966c170e4ac6d6e1eb6ce2d6457d0f27a574cc89
[INFO] running `Command { std: "docker" "start" "-a" "baa65f11e37e1031e14826e6966c170e4ac6d6e1eb6ce2d6457d0f27a574cc89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "baa65f11e37e1031e14826e6966c170e4ac6d6e1eb6ce2d6457d0f27a574cc89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baa65f11e37e1031e14826e6966c170e4ac6d6e1eb6ce2d6457d0f27a574cc89", kill_on_drop: false }`
[INFO] [stdout] baa65f11e37e1031e14826e6966c170e4ac6d6e1eb6ce2d6457d0f27a574cc89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b76dafcc8767038119c4417e17f7a88e863400db36a543052c6fb46679eae0dd
[INFO] running `Command { std: "docker" "start" "-a" "b76dafcc8767038119c4417e17f7a88e863400db36a543052c6fb46679eae0dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.115
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling bumpalo v3.20.2
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling wasm-bindgen v0.2.115
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.115
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.115
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) 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: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]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[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: `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] 
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/utils/cellset.rs:90:17
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn iter(&self) -> Copied<std::slice::Iter<CellIndex>> {
[INFO] [stdout]    |                 ^^^^^            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn iter(&self) -> Copied<std::slice::Iter<'_, CellIndex>> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.46s
[INFO] running `Command { std: "docker" "inspect" "b76dafcc8767038119c4417e17f7a88e863400db36a543052c6fb46679eae0dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b76dafcc8767038119c4417e17f7a88e863400db36a543052c6fb46679eae0dd", kill_on_drop: false }`
[INFO] [stdout] b76dafcc8767038119c4417e17f7a88e863400db36a543052c6fb46679eae0dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 446fcd2feb20f8485e4cc16d60763a58fd722b013509e7d7907c9bd495693a37
[INFO] running `Command { std: "docker" "start" "-a" "446fcd2feb20f8485e4cc16d60763a58fd722b013509e7d7907c9bd495693a37", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling libm v0.2.16
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling zerocopy-derive v0.8.48
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling pin-project-lite v0.2.17
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling wasm-bindgen v0.2.115
[INFO] [stderr]    Compiling anstyle v1.0.14
[INFO] [stderr]    Compiling clap_lex v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.16.1
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling toml_write v0.1.2
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling winnow v0.7.15
[INFO] [stderr]    Compiling is-terminal v0.4.17
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling clap_builder v4.6.0
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.65
[INFO] [stderr]    Compiling nu-ansi-term v0.50.3
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling wasm-bindgen-test-shared v0.2.115
[INFO] [stderr]    Compiling indexmap v2.13.0
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling clap v4.6.0
[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: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]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[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: `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] 
[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] [stderr]    Compiling js-sys v0.3.92
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/utils/cellset.rs:90:17
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn iter(&self) -> Copied<std::slice::Iter<CellIndex>> {
[INFO] [stdout]    |                 ^^^^^            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn iter(&self) -> Copied<std::slice::Iter<'_, CellIndex>> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling toml v0.8.23
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.65
[INFO] [stderr]    Compiling wasm-bindgen-test v0.3.65
[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)]` (part of `#[warn(unused)]`) 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: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]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[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: `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] 
[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)]` (part of `#[warn(unused)]`) on by default
[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: 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: 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)]` (part of `#[warn(unused)]`) 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/utils/cellset.rs:90:17
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn iter(&self) -> Copied<std::slice::Iter<CellIndex>> {
[INFO] [stdout]    |                 ^^^^^            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn iter(&self) -> Copied<std::slice::Iter<'_, CellIndex>> {
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 36.77s
[INFO] running `Command { std: "docker" "inspect" "446fcd2feb20f8485e4cc16d60763a58fd722b013509e7d7907c9bd495693a37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "446fcd2feb20f8485e4cc16d60763a58fd722b013509e7d7907c9bd495693a37", kill_on_drop: false }`
[INFO] [stdout] 446fcd2feb20f8485e4cc16d60763a58fd722b013509e7d7907c9bd495693a37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6588b2315d56e082980ad5656ce2b30e2a56629bb276eb4cbbee79a83b0ba7e4
[INFO] running `Command { std: "docker" "start" "-a" "6588b2315d56e082980ad5656ce2b30e2a56629bb276eb4cbbee79a83b0ba7e4", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `comb`
[INFO] [stderr]  --> src/solver/single_digit_patterns/rectangle_elimination.rs:3:20
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::{comb, NamedCellSet};
[INFO] [stderr]   |                    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `itertools::Itertools`
[INFO] [stderr]   --> src/solver/fish/mutant_fish.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use itertools::Itertools;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos`
[INFO] [stderr]   --> src/solver/fish/mutant_fish.rs:82:38
[INFO] [stderr]    |
[INFO] [stderr] 82 |         let ref mut on_unselected = |pos: usize, element: usize| {
[INFO] [stderr]    |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `element`
[INFO] [stderr]   --> src/solver/fish/mutant_fish.rs:82:50
[INFO] [stderr]    |
[INFO] [stderr] 82 |         let ref mut on_unselected = |pos: usize, element: usize| {
[INFO] [stderr]    |                                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_element`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos`
[INFO] [stderr]   --> src/solver/fish/mutant_fish.rs:44:34
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let ref mut on_unselected = |pos: usize, element: usize| {
[INFO] [stderr]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cols`
[INFO] [stderr]   --> src/solver/single_digit_patterns/rectangle_elimination.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     cols: &[NamedCellSet],
[INFO] [stderr]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_cols`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `skip_unselected` is never read
[INFO] [stderr]    --> src/utils/combination_generator.rs:100:17
[INFO] [stderr]     |
[INFO] [stderr] 100 |                 skip_unselected = false;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `candidate_cells_in_blocks` is never used
[INFO] [stderr]    --> src/solver.rs:153:19
[INFO] [stderr]     |
[INFO] [stderr]  43 | impl SudokuSolver {
[INFO] [stderr]     | ----------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 153 |     pub(crate) fn candidate_cells_in_blocks(&self, value: CellValue) -> &[NamedCellSet] {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]    --> src/sudoku.rs:281:19
[INFO] [stderr]     |
[INFO] [stderr] 280 | impl StepPosition {
[INFO] [stderr]     | ----------------- associated function in this implementation
[INFO] [stderr] 281 |     pub(crate) fn new(reason: String, cell_index: CellIndex, value: CellValue) -> Self {
[INFO] [stderr]     |                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/utils/cellset.rs:90:17
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn iter(&self) -> Copied<std::slice::Iter<CellIndex>> {
[INFO] [stderr]    |                 ^^^^^            ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn iter(&self) -> Copied<std::slice::Iter<'_, CellIndex>> {
[INFO] [stderr]    |                                                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: `hudoku` (lib) generated 10 warnings (run `cargo fix --lib -p hudoku` to apply 6 suggestions)
[INFO] [stderr] warning: unused variable: `pos`
[INFO] [stderr]    --> src/utils/combination_generator.rs:157:46
[INFO] [stderr]     |
[INFO] [stderr] 157 |         let ref mut on_element_unselected = |pos, element| {
[INFO] [stderr]     |                                              ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos`
[INFO] [stderr]    --> src/utils/combination_generator.rs:150:44
[INFO] [stderr]     |
[INFO] [stderr] 150 |         let ref mut on_element_selected = |pos, element| {
[INFO] [stderr]     |                                            ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: `hudoku` (lib test) generated 12 warnings (10 duplicates) (run `cargo fix --lib -p hudoku --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sudoku_solver-c45047a8283553d0)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test utils::cellset::tests::test_cellset ... ok
[INFO] [stdout] test utils::combination_generator::tests::test_combination_iterator ... ok
[INFO] [stdout] test utils::combination_generator::tests::test_combination_iterator_options ... ok
[INFO] [stdout] test utils::combination_generator2::tests::test_combination_generator ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sudoku_solver
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6588b2315d56e082980ad5656ce2b30e2a56629bb276eb4cbbee79a83b0ba7e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6588b2315d56e082980ad5656ce2b30e2a56629bb276eb4cbbee79a83b0ba7e4", kill_on_drop: false }`
[INFO] [stdout] 6588b2315d56e082980ad5656ce2b30e2a56629bb276eb4cbbee79a83b0ba7e4
