[INFO] updating cached repository ChristianPomales/ai_homework
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ChristianPomales/ai_homework
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ChristianPomales/ai_homework" "work/ex/clippy-test-run/sources/stable/gh/ChristianPomales/ai_homework"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/ChristianPomales/ai_homework'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ChristianPomales/ai_homework" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ChristianPomales/ai_homework"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ChristianPomales/ai_homework'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d63eab064b2d2b5e0d9e178982b11b2397480cd0
[INFO] sha for GitHub repo ChristianPomales/ai_homework: d63eab064b2d2b5e0d9e178982b11b2397480cd0
[INFO] validating manifest of ChristianPomales/ai_homework on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ChristianPomales/ai_homework on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ChristianPomales/ai_homework
[INFO] finished frobbing ChristianPomales/ai_homework
[INFO] frobbed toml for ChristianPomales/ai_homework written to work/ex/clippy-test-run/sources/stable/gh/ChristianPomales/ai_homework/Cargo.toml
[INFO] started frobbing ChristianPomales/ai_homework
[INFO] finished frobbing ChristianPomales/ai_homework
[INFO] frobbed toml for ChristianPomales/ai_homework written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/ChristianPomales/ai_homework/Cargo.toml
[INFO] crate ChristianPomales/ai_homework has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting ChristianPomales/ai_homework against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/ChristianPomales/ai_homework:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3775623315bb85daacbec2728642a1618350a996bde78e8c4fe0c508089c17a8
[INFO] running `"docker" "start" "-a" "3775623315bb85daacbec2728642a1618350a996bde78e8c4fe0c508089c17a8"`
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking ai_homework v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]   --> src/main.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |             print!("\n")
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:632:17
[INFO] [stderr]     |
[INFO] [stderr] 632 |                 initial_state: initial_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `initial_state`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:633:17
[INFO] [stderr]     |
[INFO] [stderr] 633 |                 goal_state: goal_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `goal_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:640:17
[INFO] [stderr]     |
[INFO] [stderr] 640 |                 initial_state: initial_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `initial_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:641:17
[INFO] [stderr]     |
[INFO] [stderr] 641 |                 goal_state: goal_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `goal_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:648:17
[INFO] [stderr]     |
[INFO] [stderr] 648 |                 initial_state: initial_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `initial_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:649:17
[INFO] [stderr]     |
[INFO] [stderr] 649 |                 goal_state: goal_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `goal_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:660:5
[INFO] [stderr]     |
[INFO] [stderr] 660 |     println!("");
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:666:5
[INFO] [stderr]     |
[INFO] [stderr] 666 |     println!("");
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:709:9
[INFO] [stderr]     |
[INFO] [stderr] 709 |         println!("");
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `print!()` with a format string that ends in a single newline, consider using `println!()` instead
[INFO] [stderr]   --> src/main.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |             print!("\n")
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::print_with_newline)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:632:17
[INFO] [stderr]     |
[INFO] [stderr] 632 |                 initial_state: initial_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `initial_state`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:633:17
[INFO] [stderr]     |
[INFO] [stderr] 633 |                 goal_state: goal_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `goal_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:640:17
[INFO] [stderr]     |
[INFO] [stderr] 640 |                 initial_state: initial_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `initial_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:641:17
[INFO] [stderr]     |
[INFO] [stderr] 641 |                 goal_state: goal_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `goal_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:648:17
[INFO] [stderr]     |
[INFO] [stderr] 648 |                 initial_state: initial_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `initial_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:649:17
[INFO] [stderr]     |
[INFO] [stderr] 649 |                 goal_state: goal_state,
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `goal_state`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:660:5
[INFO] [stderr]     |
[INFO] [stderr] 660 |     println!("");
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:666:5
[INFO] [stderr]     |
[INFO] [stderr] 666 |     println!("");
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]    --> src/main.rs:709:9
[INFO] [stderr]     |
[INFO] [stderr] 709 |         println!("");
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         return new_puzzle;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_puzzle`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         return new_puzzle;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_puzzle`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:117:9
[INFO] [stderr]     |
[INFO] [stderr] 117 |         return new_puzzle;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_puzzle`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |         return new_puzzle;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_puzzle`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:391:5
[INFO] [stderr]     |
[INFO] [stderr] 391 |     return new_nodes;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_nodes`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:407:5
[INFO] [stderr]     |
[INFO] [stderr] 407 |     return (return_node, lowest_cost.0);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(return_node, lowest_cost.0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:412:5
[INFO] [stderr]     |
[INFO] [stderr] 412 |     return 0;
[INFO] [stderr]     |     ^^^^^^^^^ help: remove `return` as shown: `0`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:430:5
[INFO] [stderr]     |
[INFO] [stderr] 430 |     return count;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `count`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:459:5
[INFO] [stderr]     |
[INFO] [stderr] 459 |     return total_distance as u64;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `total_distance as u64`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:519:5
[INFO] [stderr]     |
[INFO] [stderr] 519 |     return abcd;
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: remove `return` as shown: `abcd`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:557:13
[INFO] [stderr]     |
[INFO] [stderr] 557 |             return trivial;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: remove `return` as shown: `trivial`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:561:13
[INFO] [stderr]     |
[INFO] [stderr] 561 |             return very_easy;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `very_easy`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:565:13
[INFO] [stderr]     |
[INFO] [stderr] 565 |             return easy;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: remove `return` as shown: `easy`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:569:13
[INFO] [stderr]     |
[INFO] [stderr] 569 |             return doable;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: remove `return` as shown: `doable`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:573:13
[INFO] [stderr]     |
[INFO] [stderr] 573 |             return oh_boy;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: remove `return` as shown: `oh_boy`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:577:13
[INFO] [stderr]     |
[INFO] [stderr] 577 |             return impossible;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `impossible`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:609:5
[INFO] [stderr]     |
[INFO] [stderr] 609 |     return eight_puzzle
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `eight_puzzle`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded `()`
[INFO] [stderr]    --> src/main.rs:654:20
[INFO] [stderr]     |
[INFO] [stderr] 654 |             return ();
[INFO] [stderr]     |                    ^^ help: remove the `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded `()`
[INFO] [stderr]    --> src/main.rs:678:20
[INFO] [stderr]     |
[INFO] [stderr] 678 |             return ();
[INFO] [stderr]     |                    ^^ help: remove the `()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded `()`
[INFO] [stderr]    --> src/main.rs:695:24
[INFO] [stderr]     |
[INFO] [stderr] 695 |                 return ();
[INFO] [stderr]     |                        ^^ help: remove the `()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         return new_puzzle;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_puzzle`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 |         return new_puzzle;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_puzzle`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:117:9
[INFO] [stderr]     |
[INFO] [stderr] 117 |         return new_puzzle;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_puzzle`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:144:9
[INFO] [stderr]     |
[INFO] [stderr] 144 |         return new_puzzle;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_puzzle`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:391:5
[INFO] [stderr]     |
[INFO] [stderr] 391 |     return new_nodes;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `new_nodes`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:407:5
[INFO] [stderr]     |
[INFO] [stderr] 407 |     return (return_node, lowest_cost.0);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(return_node, lowest_cost.0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:412:5
[INFO] [stderr]     |
[INFO] [stderr] 412 |     return 0;
[INFO] [stderr]     |     ^^^^^^^^^ help: remove `return` as shown: `0`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:430:5
[INFO] [stderr]     |
[INFO] [stderr] 430 |     return count;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `count`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:459:5
[INFO] [stderr]     |
[INFO] [stderr] 459 |     return total_distance as u64;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `total_distance as u64`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:519:5
[INFO] [stderr]     |
[INFO] [stderr] 519 |     return abcd;
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: remove `return` as shown: `abcd`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:557:13
[INFO] [stderr]     |
[INFO] [stderr] 557 |             return trivial;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^ help: remove `return` as shown: `trivial`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:561:13
[INFO] [stderr]     |
[INFO] [stderr] 561 |             return very_easy;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `very_easy`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:565:13
[INFO] [stderr]     |
[INFO] [stderr] 565 |             return easy;
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: remove `return` as shown: `easy`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:569:13
[INFO] [stderr]     |
[INFO] [stderr] 569 |             return doable;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: remove `return` as shown: `doable`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:573:13
[INFO] [stderr]     |
[INFO] [stderr] 573 |             return oh_boy;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: remove `return` as shown: `oh_boy`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:577:13
[INFO] [stderr]     |
[INFO] [stderr] 577 |             return impossible;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `impossible`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:609:5
[INFO] [stderr]     |
[INFO] [stderr] 609 |     return eight_puzzle
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `eight_puzzle`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded `()`
[INFO] [stderr]    --> src/main.rs:654:20
[INFO] [stderr]     |
[INFO] [stderr] 654 |             return ();
[INFO] [stderr]     |                    ^^ help: remove the `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded `()`
[INFO] [stderr]    --> src/main.rs:678:20
[INFO] [stderr]     |
[INFO] [stderr] 678 |             return ();
[INFO] [stderr]     |                    ^^ help: remove the `()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded `()`
[INFO] [stderr]    --> src/main.rs:695:24
[INFO] [stderr]     |
[INFO] [stderr] 695 |                 return ();
[INFO] [stderr]     |                        ^^ help: remove the `()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 | /             match retult {
[INFO] [stderr] 46 | |                 Some(col) => {
[INFO] [stderr] 47 | |                     index.row = row;
[INFO] [stderr] 48 | |                     index.col = col;
[INFO] [stderr] 49 | |                 }
[INFO] [stderr] 50 | |                 None => {}
[INFO] [stderr] 51 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 45 |             if let Some(col) = retult {
[INFO] [stderr] 46 |     index.row = row;
[INFO] [stderr] 47 |     index.col = col;
[INFO] [stderr] 48 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:55:20
[INFO] [stderr]    |
[INFO] [stderr] 55 |             return self.clone();
[INFO] [stderr]    |                    ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:58:30
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let mut new_puzzle = self.clone();
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             match retult {
[INFO] [stderr] 73 | |                 Some(col) => {
[INFO] [stderr] 74 | |                     index.row = row;
[INFO] [stderr] 75 | |                     index.col = col;
[INFO] [stderr] 76 | |                 }
[INFO] [stderr] 77 | |                 None => {}
[INFO] [stderr] 78 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 72 |             if let Some(col) = retult {
[INFO] [stderr] 73 |     index.row = row;
[INFO] [stderr] 74 |     index.col = col;
[INFO] [stderr] 75 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:82:20
[INFO] [stderr]    |
[INFO] [stderr] 82 |             return self.clone();
[INFO] [stderr]    |                    ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:85:30
[INFO] [stderr]    |
[INFO] [stderr] 85 |         let mut new_puzzle = self.clone();
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:99:13
[INFO] [stderr]     |
[INFO] [stderr] 99  | /             match retult {
[INFO] [stderr] 100 | |                 Some(col) => {
[INFO] [stderr] 101 | |                     index.row = row;
[INFO] [stderr] 102 | |                     index.col = col;
[INFO] [stderr] 103 | |                 }
[INFO] [stderr] 104 | |                 None => {}
[INFO] [stderr] 105 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 99  |             if let Some(col) = retult {
[INFO] [stderr] 100 |     index.row = row;
[INFO] [stderr] 101 |     index.col = col;
[INFO] [stderr] 102 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:109:20
[INFO] [stderr]     |
[INFO] [stderr] 109 |             return self.clone();
[INFO] [stderr]     |                    ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:112:30
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut new_puzzle = self.clone();
[INFO] [stderr]     |                              ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:126:13
[INFO] [stderr]     |
[INFO] [stderr] 126 | /             match retult {
[INFO] [stderr] 127 | |                 Some(col) => {
[INFO] [stderr] 128 | |                     index.row = row;
[INFO] [stderr] 129 | |                     index.col = col;
[INFO] [stderr] 130 | |                 }
[INFO] [stderr] 131 | |                 None => {}
[INFO] [stderr] 132 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 126 |             if let Some(col) = retult {
[INFO] [stderr] 127 |     index.row = row;
[INFO] [stderr] 128 |     index.col = col;
[INFO] [stderr] 129 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:136:20
[INFO] [stderr]     |
[INFO] [stderr] 136 |             return self.clone();
[INFO] [stderr]     |                    ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:139:30
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let mut new_puzzle = self.clone();
[INFO] [stderr]     |                              ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:450:26
[INFO] [stderr]     |
[INFO] [stderr] 450 |             let x_goal = ((number - 1) % 3) as i64;
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i64::from((number - 1) % 3)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:453:28
[INFO] [stderr]     |
[INFO] [stderr] 453 |             let y_goal = ((number as f64 - 1.0) / 3.0).floor() as i64;
[INFO] [stderr]     |                            ^^^^^^^^^^^^^ help: try: `f64::from(number)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: statement can be reduced
[INFO] [stderr]    --> src/main.rs:659:5
[INFO] [stderr]     |
[INFO] [stderr] 659 |     &problem.initial_state.print_puzzle();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `problem.initial_state.print_puzzle();`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unnecessary_operation)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_operation
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 | /             match retult {
[INFO] [stderr] 46 | |                 Some(col) => {
[INFO] [stderr] 47 | |                     index.row = row;
[INFO] [stderr] 48 | |                     index.col = col;
[INFO] [stderr] 49 | |                 }
[INFO] [stderr] 50 | |                 None => {}
[INFO] [stderr] 51 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 45 |             if let Some(col) = retult {
[INFO] [stderr] 46 |     index.row = row;
[INFO] [stderr] 47 |     index.col = col;
[INFO] [stderr] 48 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:55:20
[INFO] [stderr]    |
[INFO] [stderr] 55 |             return self.clone();
[INFO] [stderr]    |                    ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:58:30
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let mut new_puzzle = self.clone();
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 | /             match retult {
[INFO] [stderr] 73 | |                 Some(col) => {
[INFO] [stderr] 74 | |                     index.row = row;
[INFO] [stderr] 75 | |                     index.col = col;
[INFO] [stderr] 76 | |                 }
[INFO] [stderr] 77 | |                 None => {}
[INFO] [stderr] 78 | |             }
[INFO] [stderr]    | |_____________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 72 |             if let Some(col) = retult {
[INFO] [stderr] 73 |     index.row = row;
[INFO] [stderr] 74 |     index.col = col;
[INFO] [stderr] 75 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:82:20
[INFO] [stderr]    |
[INFO] [stderr] 82 |             return self.clone();
[INFO] [stderr]    |                    ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:85:30
[INFO] [stderr]    |
[INFO] [stderr] 85 |         let mut new_puzzle = self.clone();
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:99:13
[INFO] [stderr]     |
[INFO] [stderr] 99  | /             match retult {
[INFO] [stderr] 100 | |                 Some(col) => {
[INFO] [stderr] 101 | |                     index.row = row;
[INFO] [stderr] 102 | |                     index.col = col;
[INFO] [stderr] 103 | |                 }
[INFO] [stderr] 104 | |                 None => {}
[INFO] [stderr] 105 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 99  |             if let Some(col) = retult {
[INFO] [stderr] 100 |     index.row = row;
[INFO] [stderr] 101 |     index.col = col;
[INFO] [stderr] 102 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:109:20
[INFO] [stderr]     |
[INFO] [stderr] 109 |             return self.clone();
[INFO] [stderr]     |                    ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:112:30
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut new_puzzle = self.clone();
[INFO] [stderr]     |                              ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]    --> src/main.rs:126:13
[INFO] [stderr]     |
[INFO] [stderr] 126 | /             match retult {
[INFO] [stderr] 127 | |                 Some(col) => {
[INFO] [stderr] 128 | |                     index.row = row;
[INFO] [stderr] 129 | |                     index.col = col;
[INFO] [stderr] 130 | |                 }
[INFO] [stderr] 131 | |                 None => {}
[INFO] [stderr] 132 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] help: try this
[INFO] [stderr]     |
[INFO] [stderr] 126 |             if let Some(col) = retult {
[INFO] [stderr] 127 |     index.row = row;
[INFO] [stderr] 128 |     index.col = col;
[INFO] [stderr] 129 | }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:136:20
[INFO] [stderr]     |
[INFO] [stderr] 136 |             return self.clone();
[INFO] [stderr]     |                    ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:139:30
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let mut new_puzzle = self.clone();
[INFO] [stderr]     |                              ^^^^^^^^^^^^ help: try removing the `clone` call: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:450:26
[INFO] [stderr]     |
[INFO] [stderr] 450 |             let x_goal = ((number - 1) % 3) as i64;
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i64::from((number - 1) % 3)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:453:28
[INFO] [stderr]     |
[INFO] [stderr] 453 |             let y_goal = ((number as f64 - 1.0) / 3.0).floor() as i64;
[INFO] [stderr]     |                            ^^^^^^^^^^^^^ help: try: `f64::from(number)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: statement can be reduced
[INFO] [stderr]    --> src/main.rs:659:5
[INFO] [stderr]     |
[INFO] [stderr] 659 |     &problem.initial_state.print_puzzle();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `problem.initial_state.print_puzzle();`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unnecessary_operation)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_operation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `"docker" "inspect" "3775623315bb85daacbec2728642a1618350a996bde78e8c4fe0c508089c17a8"`
[INFO] running `"docker" "rm" "-f" "3775623315bb85daacbec2728642a1618350a996bde78e8c4fe0c508089c17a8"`
[INFO] [stdout] 3775623315bb85daacbec2728642a1618350a996bde78e8c4fe0c508089c17a8