[INFO] fetching crate hudoku 0.0.1...
[INFO] testing hudoku-0.0.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate hudoku 0.0.1 into /workspace/builds/worker-2-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-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate hudoku 0.0.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 87 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[INFO] [stderr]       Adding itertools v0.13.0 (available: v0.14.0)
[INFO] [stderr]       Adding toml v0.8.23 (available: v0.9.8)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce151eb2c950bf0253994665fcbe15d69d9d5f7b1fc9733ef1b1d529732473d1
[INFO] running `Command { std: "docker" "start" "-a" "ce151eb2c950bf0253994665fcbe15d69d9d5f7b1fc9733ef1b1d529732473d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce151eb2c950bf0253994665fcbe15d69d9d5f7b1fc9733ef1b1d529732473d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce151eb2c950bf0253994665fcbe15d69d9d5f7b1fc9733ef1b1d529732473d1", kill_on_drop: false }`
[INFO] [stdout] ce151eb2c950bf0253994665fcbe15d69d9d5f7b1fc9733ef1b1d529732473d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86a477c3a5f6ad54a9c68813d3a7d1a9a5e682e5cdcfa9eccd3d732ff829dff7
[INFO] running `Command { std: "docker" "start" "-a" "86a477c3a5f6ad54a9c68813d3a7d1a9a5e682e5cdcfa9eccd3d732ff829dff7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.105
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling bumpalo v3.19.0
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.105
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.105
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.105
[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 11.99s
[INFO] running `Command { std: "docker" "inspect" "86a477c3a5f6ad54a9c68813d3a7d1a9a5e682e5cdcfa9eccd3d732ff829dff7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86a477c3a5f6ad54a9c68813d3a7d1a9a5e682e5cdcfa9eccd3d732ff829dff7", kill_on_drop: false }`
[INFO] [stdout] 86a477c3a5f6ad54a9c68813d3a7d1a9a5e682e5cdcfa9eccd3d732ff829dff7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b17d433218f49e7605eca813071006d27f441440b7f3f5431d514ed82fc24eb2
[INFO] running `Command { std: "docker" "start" "-a" "b17d433218f49e7605eca813071006d27f441440b7f3f5431d514ed82fc24eb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling hashbrown v0.16.0
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling clap_lex v0.7.6
[INFO] [stderr]    Compiling wasm-bindgen v0.2.105
[INFO] [stderr]    Compiling anstyle v1.0.13
[INFO] [stderr]    Compiling indexmap v2.12.0
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling winnow v0.7.13
[INFO] [stderr]    Compiling toml_write v0.1.2
[INFO] [stderr]    Compiling clap_builder v4.5.51
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.55
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling js-sys v0.3.82
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.7
[INFO] [stderr]    Compiling regex-automata v0.4.13
[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 clap v4.5.51
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling is-terminal v0.4.17
[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]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.4.55
[INFO] [stderr]    Compiling wasm-bindgen-test v0.3.55
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling toml v0.8.23
[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 29.87s
[INFO] running `Command { std: "docker" "inspect" "b17d433218f49e7605eca813071006d27f441440b7f3f5431d514ed82fc24eb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b17d433218f49e7605eca813071006d27f441440b7f3f5431d514ed82fc24eb2", kill_on_drop: false }`
[INFO] [stdout] b17d433218f49e7605eca813071006d27f441440b7f3f5431d514ed82fc24eb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6946f570ed4dfbcdb6a6db3da0b64960138ed4143a127c2e9b6ceb65925b4746
[INFO] running `Command { std: "docker" "start" "-a" "6946f570ed4dfbcdb6a6db3da0b64960138ed4143a127c2e9b6ceb65925b4746", 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 0.15s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sudoku_solver-04e29072d03630ab)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test utils::combination_generator::tests::test_combination_iterator ... ok
[INFO] [stdout] test utils::combination_generator::tests::test_combination_iterator_options ... ok
[INFO] [stderr]    Doc-tests sudoku_solver
[INFO] [stdout] test utils::cellset::tests::test_cellset ... 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 0.00s
[INFO] [stdout] 
[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" "6946f570ed4dfbcdb6a6db3da0b64960138ed4143a127c2e9b6ceb65925b4746", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6946f570ed4dfbcdb6a6db3da0b64960138ed4143a127c2e9b6ceb65925b4746", kill_on_drop: false }`
[INFO] [stdout] 6946f570ed4dfbcdb6a6db3da0b64960138ed4143a127c2e9b6ceb65925b4746
