[INFO] cloning repository https://github.com/khoda81/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/khoda81/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhoda81%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhoda81%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 962092ba296d8d8c44b7c017e7768bcc010c5371
[INFO] testing khoda81/sudoku-solver against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkhoda81%2Fsudoku-solver" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/khoda81/sudoku-solver
[INFO] finished tweaking git repo https://github.com/khoda81/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/khoda81/sudoku-solver written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/khoda81/sudoku-solver on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/khoda81/sudoku-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db2467492ec07ce35dbffdc75bcf5222bcd1f56f7243abeab59ab9229b3dd49e
[INFO] running `Command { std: "docker" "start" "-a" "db2467492ec07ce35dbffdc75bcf5222bcd1f56f7243abeab59ab9229b3dd49e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db2467492ec07ce35dbffdc75bcf5222bcd1f56f7243abeab59ab9229b3dd49e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2467492ec07ce35dbffdc75bcf5222bcd1f56f7243abeab59ab9229b3dd49e", kill_on_drop: false }`
[INFO] [stdout] db2467492ec07ce35dbffdc75bcf5222bcd1f56f7243abeab59ab9229b3dd49e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1793961baf52b1b861c3c7b91c4550fea6168555fd1a498eb7361f859e213fe3
[INFO] running `Command { std: "docker" "start" "-a" "1793961baf52b1b861c3c7b91c4550fea6168555fd1a498eb7361f859e213fe3", kill_on_drop: false }`
[INFO] [stderr]    Compiling sudoku_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `io::Write`
[INFO] [stdout]  --> src/binary_sudoku.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Display, io::Write};
[INFO] [stdout]   |                         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_options`
[INFO] [stdout]    --> src/binary_sudoku.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let num_options = self.masks[i][j].count_ones();
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_options`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `fmt::Display`, and `self`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fmt::Display,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 3 |     time::{self, Duration, Instant},
[INFO] [stdout]   |            ^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntegerSudoku`
[INFO] [stdout]  --> src/main.rs:6:35
[INFO] [stdout]   |
[INFO] [stdout] 6 | use sudoku_solver::{BinarySudoku, IntegerSudoku, SudokuSolver};
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "1793961baf52b1b861c3c7b91c4550fea6168555fd1a498eb7361f859e213fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1793961baf52b1b861c3c7b91c4550fea6168555fd1a498eb7361f859e213fe3", kill_on_drop: false }`
[INFO] [stdout] 1793961baf52b1b861c3c7b91c4550fea6168555fd1a498eb7361f859e213fe3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da644228faf788600f6f59e4102b67668a2309d89856c9a8fd7cf7602856f780
[INFO] running `Command { std: "docker" "start" "-a" "da644228faf788600f6f59e4102b67668a2309d89856c9a8fd7cf7602856f780", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `io::Write`
[INFO] [stdout]  --> src/binary_sudoku.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Display, io::Write};
[INFO] [stdout]   |                         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_options`
[INFO] [stdout]    --> src/binary_sudoku.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let num_options = self.masks[i][j].count_ones();
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_options`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sudoku_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Duration`, `fmt::Display`, and `self`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fmt::Display,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 3 |     time::{self, Duration, Instant},
[INFO] [stdout]   |            ^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IntegerSudoku`
[INFO] [stdout]  --> src/main.rs:6:35
[INFO] [stdout]   |
[INFO] [stdout] 6 | use sudoku_solver::{BinarySudoku, IntegerSudoku, SudokuSolver};
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::Write`
[INFO] [stdout]  --> src/binary_sudoku.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Display, io::Write};
[INFO] [stdout]   |                         ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_options`
[INFO] [stdout]    --> src/binary_sudoku.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let num_options = self.masks[i][j].count_ones();
[INFO] [stdout]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_options`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "da644228faf788600f6f59e4102b67668a2309d89856c9a8fd7cf7602856f780", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da644228faf788600f6f59e4102b67668a2309d89856c9a8fd7cf7602856f780", kill_on_drop: false }`
[INFO] [stdout] da644228faf788600f6f59e4102b67668a2309d89856c9a8fd7cf7602856f780
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 357eb582d622e8ae8e32662c24da6f5c762fa1a6c2b970bb190166ac5a1f6031
[INFO] running `Command { std: "docker" "start" "-a" "357eb582d622e8ae8e32662c24da6f5c762fa1a6c2b970bb190166ac5a1f6031", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `io::Write`
[INFO] [stderr]  --> src/binary_sudoku.rs:1:25
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{fmt::Display, io::Write};
[INFO] [stderr]   |                         ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `num_options`
[INFO] [stderr]    --> src/binary_sudoku.rs:130:13
[INFO] [stderr]     |
[INFO] [stderr] 130 |         let num_options = self.masks[i][j].count_ones();
[INFO] [stderr]     |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_options`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku_solver` (lib) generated 2 warnings
[INFO] [stderr] warning: unused imports: `Duration`, `fmt::Display`, and `self`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     fmt::Display,
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 3 |     time::{self, Duration, Instant},
[INFO] [stderr]   |            ^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `IntegerSudoku`
[INFO] [stderr]  --> src/main.rs:6:35
[INFO] [stderr]   |
[INFO] [stderr] 6 | use sudoku_solver::{BinarySudoku, IntegerSudoku, SudokuSolver};
[INFO] [stderr]   |                                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `sudoku_solver` (bin "sudoku_solver" test) generated 2 warnings (run `cargo fix --bin "sudoku_solver" --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `sudoku_solver` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sudoku_solver-1d5ae3011124d68b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sudoku_solver-6c002123a9c24924)
[INFO] [stdout] test result: ok. 0 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] [stderr]    Doc-tests sudoku_solver
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/int_sudoku.rs - int_sudoku::IntegerSudoku::new (line 88) ... FAILED
[INFO] [stdout] test src/int_sudoku.rs - int_sudoku::IntegerSudoku::solve_cell (line 19) ... FAILED
[INFO] [stdout] test src/binary_sudoku.rs - binary_sudoku::BinarySudoku::find_best_cell (line 43) ... FAILED
[INFO] [stdout] test src/int_sudoku.rs - int_sudoku::IntegerSudoku::is_valid (line 55) ... FAILED
[INFO] [stdout] test src/binary_sudoku.rs - binary_sudoku::BinarySudoku::new (line 86) ... FAILED
[INFO] [stdout] test src/int_sudoku.rs - int_sudoku::IntegerSudoku::fmt (line 113) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/int_sudoku.rs - int_sudoku::IntegerSudoku::new (line 88) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `sudoku`
[INFO] [stdout]  --> src/int_sudoku.rs:89:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sudoku::IntegerSudoku;
[INFO] [stdout]   |     ^^^^^^ use of unresolved module or unlinked crate `sudoku`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file src/sudoku.rs, use `mod sudoku` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 2 + mod sudoku;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/int_sudoku.rs - int_sudoku::IntegerSudoku::solve_cell (line 19) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `IntegerSudoku`
[INFO] [stdout]  --> src/int_sudoku.rs:20:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut board = IntegerSudoku::new([[0; 9]; 9]);
[INFO] [stdout]   |                 ^^^^^^^^^^^^^ use of undeclared type `IntegerSudoku`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 + use sudoku_solver::IntegerSudoku;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/binary_sudoku.rs - binary_sudoku::BinarySudoku::find_best_cell (line 43) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `sudoku`
[INFO] [stdout]  --> src/binary_sudoku.rs:44:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sudoku::Sudoku;
[INFO] [stdout]   |     ^^^^^^ use of unresolved module or unlinked crate `sudoku`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file src/sudoku.rs, use `mod sudoku` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 2 + mod sudoku;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/int_sudoku.rs - int_sudoku::IntegerSudoku::is_valid (line 55) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Board`
[INFO] [stdout]  --> src/int_sudoku.rs:56:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut board = Board::new();
[INFO] [stdout]   |                 ^^^^^ use of undeclared type `Board`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/binary_sudoku.rs - binary_sudoku::BinarySudoku::new (line 86) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `sudoku`
[INFO] [stdout]  --> src/binary_sudoku.rs:87:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sudoku::BinarySudoku;
[INFO] [stdout]   |     ^^^^^^ use of unresolved module or unlinked crate `sudoku`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file src/sudoku.rs, use `mod sudoku` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 2 + mod sudoku;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/int_sudoku.rs - int_sudoku::IntegerSudoku::fmt (line 113) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `sudoku`
[INFO] [stdout]  --> src/int_sudoku.rs:114:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sudoku::Sudoku;
[INFO] [stdout]   |     ^^^^^^ use of unresolved module or unlinked crate `sudoku`
[INFO] [stdout]   |
[INFO] [stdout] help: to make use of source file src/sudoku.rs, use `mod sudoku` in this file to declare the module
[INFO] [stdout]   |
[INFO] [stdout] 2 + mod sudoku;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/binary_sudoku.rs - binary_sudoku::BinarySudoku::find_best_cell (line 43)
[INFO] [stdout]     src/binary_sudoku.rs - binary_sudoku::BinarySudoku::new (line 86)
[INFO] [stdout]     src/int_sudoku.rs - int_sudoku::IntegerSudoku::fmt (line 113)
[INFO] [stdout]     src/int_sudoku.rs - int_sudoku::IntegerSudoku::is_valid (line 55)
[INFO] [stdout]     src/int_sudoku.rs - int_sudoku::IntegerSudoku::new (line 88)
[INFO] [stdout]     src/int_sudoku.rs - int_sudoku::IntegerSudoku::solve_cell (line 19)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.36s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "357eb582d622e8ae8e32662c24da6f5c762fa1a6c2b970bb190166ac5a1f6031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "357eb582d622e8ae8e32662c24da6f5c762fa1a6c2b970bb190166ac5a1f6031", kill_on_drop: false }`
[INFO] [stdout] 357eb582d622e8ae8e32662c24da6f5c762fa1a6c2b970bb190166ac5a1f6031