[INFO] cloning repository https://github.com/galenelias/AdventOfCode_2024
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/galenelias/AdventOfCode_2024" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgalenelias%2FAdventOfCode_2024", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02b0fd7c003ecc145bcadf1d57867d80e288449b
[INFO] linting galenelias/AdventOfCode_2024 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgalenelias%2FAdventOfCode_2024" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/galenelias/AdventOfCode_2024
[INFO] finished tweaking git repo https://github.com/galenelias/AdventOfCode_2024
[INFO] tweaked toml for git repo https://github.com/galenelias/AdventOfCode_2024 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/galenelias/AdventOfCode_2024 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/galenelias/AdventOfCode_2024 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" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Checking advent_of_code_2023 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day02.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     return is_decreasing || is_increasing;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     return is_decreasing || is_increasing;
[INFO] [stdout] 10 +     is_decreasing || is_increasing
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]  --> src/day02.rs:8:45
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let is_decreasing = deltas.iter().all(|&x| x >= -3 && x <= -1);
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^^^^^ help: use: `(-3..=-1).contains(&x)`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout]   = note: `#[warn(clippy::manual_range_contains)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]  --> src/day02.rs:9:45
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let is_increasing = deltas.iter().all(|&x| x >= 1 && x <= 3);
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^^^ help: use: `(1..=3).contains(&x)`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/day03.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |                 .captures_iter(&input)
[INFO] [stdout]    |                                ^^^^^^ help: change this to: `input`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day04.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     return false;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 19 -     return false;
[INFO] [stdout] 19 +     false
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]  --> src/day04.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn is_xmas(grid: &Vec<Vec<char>>, r: usize, c: usize, dr: isize, dc: isize) -> bool {
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]   = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]   |
[INFO] [stdout] 3 - fn is_xmas(grid: &Vec<Vec<char>>, r: usize, c: usize, dr: isize, dc: isize) -> bool {
[INFO] [stdout] 3 + fn is_xmas(grid: &[Vec<char>], r: usize, c: usize, dr: isize, dc: isize) -> bool {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day04.rs:41:2
[INFO] [stdout]    |
[INFO] [stdout] 41 |     return grid[r - 1][c - 1] != grid[r + 1][c + 1];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 41 -     return grid[r - 1][c - 1] != grid[r + 1][c + 1];
[INFO] [stdout] 41 +     grid[r - 1][c - 1] != grid[r + 1][c + 1]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day02.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     return is_decreasing || is_increasing;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     return is_decreasing || is_increasing;
[INFO] [stdout] 10 +     is_decreasing || is_increasing
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]  --> src/day02.rs:8:45
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let is_decreasing = deltas.iter().all(|&x| x >= -3 && x <= -1);
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^^^^^ help: use: `(-3..=-1).contains(&x)`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout]   = note: `#[warn(clippy::manual_range_contains)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day04.rs:22:19
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn is_x_mas(grid: &Vec<Vec<char>>, r: usize, c: usize) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 22 - fn is_x_mas(grid: &Vec<Vec<char>>, r: usize, c: usize) -> bool {
[INFO] [stdout] 22 + fn is_x_mas(grid: &[Vec<char>], r: usize, c: usize) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `RangeInclusive::contains` implementation
[INFO] [stdout]  --> src/day02.rs:9:45
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let is_increasing = deltas.iter().all(|&x| x >= 1 && x <= 3);
[INFO] [stdout]   |                                                ^^^^^^^^^^^^^^^^ help: use: `(1..=3).contains(&x)`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_range_contains
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/day03.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |                 .captures_iter(&input)
[INFO] [stdout]    |                                ^^^^^^ help: change this to: `input`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day04.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     return false;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 19 -     return false;
[INFO] [stdout] 19 +     false
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]  --> src/day04.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn is_xmas(grid: &Vec<Vec<char>>, r: usize, c: usize, dr: isize, dc: isize) -> bool {
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]   = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]   |
[INFO] [stdout] 3 - fn is_xmas(grid: &Vec<Vec<char>>, r: usize, c: usize, dr: isize, dc: isize) -> bool {
[INFO] [stdout] 3 + fn is_xmas(grid: &[Vec<char>], r: usize, c: usize, dr: isize, dc: isize) -> bool {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day04.rs:41:2
[INFO] [stdout]    |
[INFO] [stdout] 41 |     return grid[r - 1][c - 1] != grid[r + 1][c + 1];
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 41 -     return grid[r - 1][c - 1] != grid[r + 1][c + 1];
[INFO] [stdout] 41 +     grid[r - 1][c - 1] != grid[r + 1][c + 1]
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day04.rs:22:19
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn is_x_mas(grid: &Vec<Vec<char>>, r: usize, c: usize) -> bool {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 22 - fn is_x_mas(grid: &Vec<Vec<char>>, r: usize, c: usize) -> bool {
[INFO] [stdout] 22 + fn is_x_mas(grid: &[Vec<char>], r: usize, c: usize) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day06.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     grid: &Vec<Vec<char>>,
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 13 -     grid: &Vec<Vec<char>>,
[INFO] [stdout] 13 +     grid: &[Vec<char>],
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day06.rs:63:2
[INFO] [stdout]    |
[INFO] [stdout] 63 |     return visited;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     return visited;
[INFO] [stdout] 63 +     visited
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/day06.rs:54:48
[INFO] [stdout]    |
[INFO] [stdout] 54 |         if let Some((new_pos, new_dir)) = move_guard(&grid, guard_pos, dir) {
[INFO] [stdout]    |                                                      ^^^^^ help: change this to: `grid`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/day06.rs:77:48
[INFO] [stdout]    |
[INFO] [stdout] 77 |         if let Some((new_pos, new_dir)) = move_guard(&grid, guard_pos, dir) {
[INFO] [stdout]    |                                                      ^^^^^ help: change this to: `grid`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`u32` -> `u32`)
[INFO] [stdout]  --> src/day07.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 |     num1 * 10i64.pow(num2_digits as u32) + num2
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^ help: try: `num2_digits`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]   = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day06.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     grid: &Vec<Vec<char>>,
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 13 -     grid: &Vec<Vec<char>>,
[INFO] [stdout] 13 +     grid: &[Vec<char>],
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day06.rs:63:2
[INFO] [stdout]    |
[INFO] [stdout] 63 |     return visited;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     return visited;
[INFO] [stdout] 63 +     visited
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/day06.rs:54:48
[INFO] [stdout]    |
[INFO] [stdout] 54 |         if let Some((new_pos, new_dir)) = move_guard(&grid, guard_pos, dir) {
[INFO] [stdout]    |                                                      ^^^^^ help: change this to: `grid`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/day06.rs:77:48
[INFO] [stdout]    |
[INFO] [stdout] 77 |         if let Some((new_pos, new_dir)) = move_guard(&grid, guard_pos, dir) {
[INFO] [stdout]    |                                                      ^^^^^ help: change this to: `grid`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `r` is used to index `grid`
[INFO] [stdout]   --> src/day08.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 |     for r in 0..grid.len() {
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]    = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 47 -     for r in 0..grid.len() {
[INFO] [stdout] 47 +     for (r, <item>) in grid.iter().enumerate() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `c` is used to index `grid`
[INFO] [stdout]   --> src/day08.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |         for c in 0..grid[r].len() {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 48 -         for c in 0..grid[r].len() {
[INFO] [stdout] 48 +         for (c, <item>) in grid.iter().enumerate().take(grid[r].len()) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`u32` -> `u32`)
[INFO] [stdout]  --> src/day07.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 5 |     num1 * 10i64.pow(num2_digits as u32) + num2
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^^^ help: try: `num2_digits`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]   = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `r` is used to index `grid`
[INFO] [stdout]   --> src/day08.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 |     for r in 0..grid.len() {
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]    = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 47 -     for r in 0..grid.len() {
[INFO] [stdout] 47 +     for (r, <item>) in grid.iter().enumerate() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `c` is used to index `grid`
[INFO] [stdout]   --> src/day08.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 48 |         for c in 0..grid[r].len() {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 48 -         for c in 0..grid[r].len() {
[INFO] [stdout] 48 +         for (c, <item>) in grid.iter().enumerate().take(grid[r].len()) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]   --> src/day09.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | /             if i < files.len() - 1 {
[INFO] [stdout] 74 | |                 if files[i + 1].start - files[i].end() >= cur_file.size {
[INFO] [stdout] 75 | |                     let mut popped_file = files.remove(cur_file_pos);
[INFO] [stdout] 76 | |                     popped_file.start = files[i].end();
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]    = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]    |
[INFO] [stdout] 73 ~             if i < files.len() - 1
[INFO] [stdout] 74 ~                 && files[i + 1].start - files[i].end() >= cur_file.size {
[INFO] [stdout] 75 |                     let mut popped_file = files.remove(cur_file_pos);
[INFO] [stdout] ...
[INFO] [stdout] 78 |                     break;
[INFO] [stdout] 79 ~                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day10.rs:29:2
[INFO] [stdout]    |
[INFO] [stdout] 29 |     return result;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 29 -     return result;
[INFO] [stdout] 29 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day10.rs:51:2
[INFO] [stdout]    |
[INFO] [stdout] 51 |     return result;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 51 -     return result;
[INFO] [stdout] 51 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]   --> src/day09.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | /             if i < files.len() - 1 {
[INFO] [stdout] 74 | |                 if files[i + 1].start - files[i].end() >= cur_file.size {
[INFO] [stdout] 75 | |                     let mut popped_file = files.remove(cur_file_pos);
[INFO] [stdout] 76 | |                     popped_file.start = files[i].end();
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | |             }
[INFO] [stdout]    | |_____________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]    = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]    |
[INFO] [stdout] 73 ~             if i < files.len() - 1
[INFO] [stdout] 74 ~                 && files[i + 1].start - files[i].end() >= cur_file.size {
[INFO] [stdout] 75 |                     let mut popped_file = files.remove(cur_file_pos);
[INFO] [stdout] ...
[INFO] [stdout] 78 |                     break;
[INFO] [stdout] 79 ~                 }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |                   if !seen.contains(&(r + 1, c))
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 76 | |                     && !(seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout]    | |_______________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 75 -                 if !seen.contains(&(r + 1, c))
[INFO] [stdout] 76 -                     && !(seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout] 75 +                 if !(seen.contains(&(r + 1, c)) || seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout]    |
[INFO] [stdout] 75 -                 if !seen.contains(&(r + 1, c))
[INFO] [stdout] 76 -                     && !(seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout] 75 +                 if (seen.contains(&(r + 1, c - 1)) || !seen.contains(&(r, c - 1))) && !seen.contains(&(r + 1, c))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     && !(seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!seen.contains(&(r, c - 1)) || seen.contains(&(r + 1, c - 1))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |                   if !seen.contains(&(r, c - 1))
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 82 | |                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout]    | |_______________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 81 -                 if !seen.contains(&(r, c - 1))
[INFO] [stdout] 82 -                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout] 81 +                 if !(seen.contains(&(r, c - 1)) || seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout]    |
[INFO] [stdout] 81 -                 if !seen.contains(&(r, c - 1))
[INFO] [stdout] 82 -                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout] 81 +                 if (seen.contains(&(r - 1, c - 1)) || !seen.contains(&(r - 1, c))) && !seen.contains(&(r, c - 1))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!seen.contains(&(r - 1, c)) || seen.contains(&(r - 1, c - 1))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 |                   if !seen.contains(&(r, c + 1))
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 88 | |                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout]    | |_______________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 87 -                 if !seen.contains(&(r, c + 1))
[INFO] [stdout] 88 -                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout] 87 +                 if !(seen.contains(&(r, c + 1)) || seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout]    |
[INFO] [stdout] 87 -                 if !seen.contains(&(r, c + 1))
[INFO] [stdout] 88 -                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout] 87 +                 if (seen.contains(&(r - 1, c + 1)) || !seen.contains(&(r - 1, c))) && !seen.contains(&(r, c + 1))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!seen.contains(&(r - 1, c)) || seen.contains(&(r - 1, c + 1))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]  --> src/day15.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn print_grid(grid: &Vec<Vec<char>>, robot_pos: (isize, isize)) {
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]   |
[INFO] [stdout] 4 - fn print_grid(grid: &Vec<Vec<char>>, robot_pos: (isize, isize)) {
[INFO] [stdout] 4 + fn print_grid(grid: &[Vec<char>], robot_pos: (isize, isize)) {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `r` is used to index `grid`
[INFO] [stdout]  --> src/day15.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |     for r in 0..grid.len() {
[INFO] [stdout]   |              ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]   |
[INFO] [stdout] 5 -     for r in 0..grid.len() {
[INFO] [stdout] 5 +     for (r, <item>) in grid.iter().enumerate() {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day10.rs:29:2
[INFO] [stdout]    |
[INFO] [stdout] 29 |     return result;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 29 -     return result;
[INFO] [stdout] 29 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day10.rs:51:2
[INFO] [stdout]    |
[INFO] [stdout] 51 |     return result;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 51 -     return result;
[INFO] [stdout] 51 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |                   if !seen.contains(&(r + 1, c))
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 76 | |                     && !(seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout]    | |_______________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 75 -                 if !seen.contains(&(r + 1, c))
[INFO] [stdout] 76 -                     && !(seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout] 75 +                 if !(seen.contains(&(r + 1, c)) || seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout]    |
[INFO] [stdout] 75 -                 if !seen.contains(&(r + 1, c))
[INFO] [stdout] 76 -                     && !(seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout] 75 +                 if (seen.contains(&(r + 1, c - 1)) || !seen.contains(&(r, c - 1))) && !seen.contains(&(r + 1, c))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `c` is used to index `grid`
[INFO] [stdout]  --> src/day15.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |         for c in 0..grid[r].len() {
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]   |
[INFO] [stdout] 6 -         for c in 0..grid[r].len() {
[INFO] [stdout] 6 +         for (c, <item>) in grid.iter().enumerate().take(grid[r].len()) {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     && !(seen.contains(&(r, c - 1)) && !seen.contains(&(r + 1, c - 1)))
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!seen.contains(&(r, c - 1)) || seen.contains(&(r + 1, c - 1))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:81:8
[INFO] [stdout]    |
[INFO] [stdout] 81 |                   if !seen.contains(&(r, c - 1))
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 82 | |                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout]    | |_______________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 81 -                 if !seen.contains(&(r, c - 1))
[INFO] [stdout] 82 -                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout] 81 +                 if !(seen.contains(&(r, c - 1)) || seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout]    |
[INFO] [stdout] 81 -                 if !seen.contains(&(r, c - 1))
[INFO] [stdout] 82 -                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout] 81 +                 if (seen.contains(&(r - 1, c - 1)) || !seen.contains(&(r - 1, c))) && !seen.contains(&(r, c - 1))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c - 1)))
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!seen.contains(&(r - 1, c)) || seen.contains(&(r - 1, c - 1))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 |                   if !seen.contains(&(r, c + 1))
[INFO] [stdout]    |  ____________________^
[INFO] [stdout] 88 | |                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout]    | |_______________________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 87 -                 if !seen.contains(&(r, c + 1))
[INFO] [stdout] 88 -                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout] 87 +                 if !(seen.contains(&(r, c + 1)) || seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout]    |
[INFO] [stdout] 87 -                 if !seen.contains(&(r, c + 1))
[INFO] [stdout] 88 -                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout] 87 +                 if (seen.contains(&(r - 1, c + 1)) || !seen.contains(&(r - 1, c))) && !seen.contains(&(r, c + 1))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/day12.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |                     && !(seen.contains(&(r - 1, c)) && !seen.contains(&(r - 1, c + 1)))
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `!seen.contains(&(r - 1, c)) || seen.contains(&(r - 1, c + 1))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]  --> src/day15.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn print_grid(grid: &Vec<Vec<char>>, robot_pos: (isize, isize)) {
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]   |
[INFO] [stdout] 4 - fn print_grid(grid: &Vec<Vec<char>>, robot_pos: (isize, isize)) {
[INFO] [stdout] 4 + fn print_grid(grid: &[Vec<char>], robot_pos: (isize, isize)) {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `r` is used to index `grid`
[INFO] [stdout]  --> src/day15.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 |     for r in 0..grid.len() {
[INFO] [stdout]   |              ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]   |
[INFO] [stdout] 5 -     for r in 0..grid.len() {
[INFO] [stdout] 5 +     for (r, <item>) in grid.iter().enumerate() {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `c` is used to index `grid`
[INFO] [stdout]  --> src/day15.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |         for c in 0..grid[r].len() {
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]   |
[INFO] [stdout] 6 -         for c in 0..grid[r].len() {
[INFO] [stdout] 6 +         for (c, <item>) in grid.iter().enumerate().take(grid[r].len()) {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day15.rs:18:18
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn gps_sum(grid: &Vec<Vec<char>>) -> usize {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 18 - fn gps_sum(grid: &Vec<Vec<char>>) -> usize {
[INFO] [stdout] 18 + fn gps_sum(grid: &[Vec<char>]) -> usize {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day15.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn try_move(grid: &mut Vec<Vec<char>>, robot_pos: &mut (isize, isize), dr: isize, dc: isize) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 36 - fn try_move(grid: &mut Vec<Vec<char>>, robot_pos: &mut (isize, isize), dr: isize, dc: isize) {
[INFO] [stdout] 36 + fn try_move(grid: &mut [Vec<char>], robot_pos: &mut (isize, isize), dr: isize, dc: isize) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day15.rs:18:18
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn gps_sum(grid: &Vec<Vec<char>>) -> usize {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 18 - fn gps_sum(grid: &Vec<Vec<char>>) -> usize {
[INFO] [stdout] 18 + fn gps_sum(grid: &[Vec<char>]) -> usize {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day15.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn try_move(grid: &mut Vec<Vec<char>>, robot_pos: &mut (isize, isize), dr: isize, dc: isize) {
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 36 - fn try_move(grid: &mut Vec<Vec<char>>, robot_pos: &mut (isize, isize), dr: isize, dc: isize) {
[INFO] [stdout] 36 + fn try_move(grid: &mut [Vec<char>], robot_pos: &mut (isize, isize), dr: isize, dc: isize) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day15.rs:102:3
[INFO] [stdout]     |
[INFO] [stdout] 102 |         return can_move;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 102 -         return can_move;
[INFO] [stdout] 102 +         can_move
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day15.rs:116:3
[INFO] [stdout]     |
[INFO] [stdout] 116 |         return can_move;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 116 -         return can_move;
[INFO] [stdout] 116 +         can_move
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day15.rs:141:3
[INFO] [stdout]     |
[INFO] [stdout] 141 |         return can_move_1 && can_move_2;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 141 -         return can_move_1 && can_move_2;
[INFO] [stdout] 141 +         can_move_1 && can_move_2
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day15.rs:102:3
[INFO] [stdout]     |
[INFO] [stdout] 102 |         return can_move;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 102 -         return can_move;
[INFO] [stdout] 102 +         can_move
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day15.rs:116:3
[INFO] [stdout]     |
[INFO] [stdout] 116 |         return can_move;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 116 -         return can_move;
[INFO] [stdout] 116 +         can_move
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day15.rs:141:3
[INFO] [stdout]     |
[INFO] [stdout] 141 |         return can_move_1 && can_move_2;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 141 -         return can_move_1 && can_move_2;
[INFO] [stdout] 141 +         can_move_1 && can_move_2
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day15.rs:158:10
[INFO] [stdout]     |
[INFO] [stdout] 158 |         '#' => return,
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: replace `return` with a unit value
[INFO] [stdout]     |
[INFO] [stdout] 158 -         '#' => return,
[INFO] [stdout] 158 +         '#' => (),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]    --> src/day15.rs:180:6
[INFO] [stdout]     |
[INFO] [stdout] 180 |                   .map(|ch| match ch {
[INFO] [stdout]     |  __________________^
[INFO] [stdout] 181 | |                     'O' => ['[', ']'],
[INFO] [stdout] 182 | |                     '#' => ['#', '#'],
[INFO] [stdout] 183 | |                     '.' => ['.', '.'],
[INFO] [stdout] 184 | |                     _ => unreachable!(),
[INFO] [stdout] 185 | |                 })
[INFO] [stdout] 186 | |                 .flatten()
[INFO] [stdout]     | |__________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten
[INFO] [stdout]     = note: `#[warn(clippy::map_flatten)]` on by default
[INFO] [stdout] help: try replacing `map` with `flat_map` and remove the `.flatten()`
[INFO] [stdout]     |
[INFO] [stdout] 180 ~                 .flat_map(|ch| match ch {
[INFO] [stdout] 181 ~                     'O' => ['[', ']'],
[INFO] [stdout] 182 ~                     '#' => ['#', '#'],
[INFO] [stdout] 183 ~                     '.' => ['.', '.'],
[INFO] [stdout] 184 ~                     _ => unreachable!(),
[INFO] [stdout] 185 ~                 })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]    --> src/day15.rs:233:4
[INFO] [stdout]     |
[INFO] [stdout] 233 |           .map(|line| line.chars().collect_vec())
[INFO] [stdout]     |  __________^
[INFO] [stdout] 234 | |         .flatten()
[INFO] [stdout]     | |__________________^ help: try replacing `map` with `flat_map` and remove the `.flatten()`: `flat_map(|line| line.chars().collect_vec())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day17.rs:39:2
[INFO] [stdout]    |
[INFO] [stdout] 39 |     return result;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 39 -     return result;
[INFO] [stdout] 39 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/day17.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |             0 => regs[0] = regs[0] / (1i64 << get_combo_operand(&regs, operand)), // adv
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `regs[0] /= (1i64 << get_combo_operand(&regs, operand))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]    = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day17.rs:67:2
[INFO] [stdout]    |
[INFO] [stdout] 67 |     return None;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 67 -     return None;
[INFO] [stdout] 67 +     None
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `[i64; 3]` which implements the `Copy` trait
[INFO] [stdout]   --> src/day17.rs:94:36
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let part1 = run_program(&program, regs.clone());
[INFO] [stdout]    |                                       ^^^^^^^^^^^^ help: try removing the `clone` call: `regs`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]  --> src/day18.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn has_path(grid: &Vec<Vec<char>>) -> Option<usize> {
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]   |
[INFO] [stdout] 6 - fn has_path(grid: &Vec<Vec<char>>) -> Option<usize> {
[INFO] [stdout] 6 + fn has_path(grid: &[Vec<char>]) -> Option<usize> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `isize` is unnecessary
[INFO] [stdout]  --> src/day18.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 |     queue.push_back((0 as isize, 0 as isize, 0));
[INFO] [stdout]   |                      ^^^^^^^^^^ help: try: `0_isize`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day15.rs:158:10
[INFO] [stdout]     |
[INFO] [stdout] 158 |         '#' => return,
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: replace `return` with a unit value
[INFO] [stdout]     |
[INFO] [stdout] 158 -         '#' => return,
[INFO] [stdout] 158 +         '#' => (),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `isize` is unnecessary
[INFO] [stdout]  --> src/day18.rs:9:31
[INFO] [stdout]   |
[INFO] [stdout] 9 |     queue.push_back((0 as isize, 0 as isize, 0));
[INFO] [stdout]   |                                  ^^^^^^^^^^ help: try: `0_isize`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]    --> src/day15.rs:180:6
[INFO] [stdout]     |
[INFO] [stdout] 180 |                   .map(|ch| match ch {
[INFO] [stdout]     |  __________________^
[INFO] [stdout] 181 | |                     'O' => ['[', ']'],
[INFO] [stdout] 182 | |                     '#' => ['#', '#'],
[INFO] [stdout] 183 | |                     '.' => ['.', '.'],
[INFO] [stdout] 184 | |                     _ => unreachable!(),
[INFO] [stdout] 185 | |                 })
[INFO] [stdout] 186 | |                 .flatten()
[INFO] [stdout]     | |__________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten
[INFO] [stdout]     = note: `#[warn(clippy::map_flatten)]` on by default
[INFO] [stdout] help: try replacing `map` with `flat_map` and remove the `.flatten()`
[INFO] [stdout]     |
[INFO] [stdout] 180 ~                 .flat_map(|ch| match ch {
[INFO] [stdout] 181 ~                     'O' => ['[', ']'],
[INFO] [stdout] 182 ~                     '#' => ['#', '#'],
[INFO] [stdout] 183 ~                     '.' => ['.', '.'],
[INFO] [stdout] 184 ~                     _ => unreachable!(),
[INFO] [stdout] 185 ~                 })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `map(..).flatten()` on `Iterator`
[INFO] [stdout]    --> src/day15.rs:233:4
[INFO] [stdout]     |
[INFO] [stdout] 233 |           .map(|line| line.chars().collect_vec())
[INFO] [stdout]     |  __________^
[INFO] [stdout] 234 | |         .flatten()
[INFO] [stdout]     | |__________________^ help: try replacing `map` with `flat_map` and remove the `.flatten()`: `flat_map(|line| line.chars().collect_vec())`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_flatten
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day20.rs:14:28
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn compute_distances(grid: &Vec<Vec<char>>, start: (usize, usize)) -> Vec<Vec<usize>> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 14 - fn compute_distances(grid: &Vec<Vec<char>>, start: (usize, usize)) -> Vec<Vec<usize>> {
[INFO] [stdout] 14 + fn compute_distances(grid: &[Vec<char>], start: (usize, usize)) -> Vec<Vec<usize>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day17.rs:39:2
[INFO] [stdout]    |
[INFO] [stdout] 39 |     return result;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 39 -     return result;
[INFO] [stdout] 39 +     result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]    --> src/day20.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 | / ...                   if time < base_time {
[INFO] [stdout] 112 | | ...                       if base_time - time >= 100 {
[INFO] [stdout] 113 | | ...                           cheats += 1;
[INFO] [stdout] 114 | | ...                       }
[INFO] [stdout] 115 | | ...                   }
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 111 ~                                 if time < base_time
[INFO] [stdout] 112 ~                                     && base_time - time >= 100 {
[INFO] [stdout] 113 |                                         cheats += 1;
[INFO] [stdout] 114 ~                                     }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]   --> src/day17.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |             0 => regs[0] = regs[0] / (1i64 << get_combo_operand(&regs, operand)), // adv
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `regs[0] /= (1i64 << get_combo_operand(&regs, operand))`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]    = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day17.rs:67:2
[INFO] [stdout]    |
[INFO] [stdout] 67 |     return None;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 67 -     return None;
[INFO] [stdout] 67 +     None
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day21.rs:46:2
[INFO] [stdout]    |
[INFO] [stdout] 46 |     return true;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 46 -     return true;
[INFO] [stdout] 46 +     true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `[i64; 3]` which implements the `Copy` trait
[INFO] [stdout]   --> src/day17.rs:94:36
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let part1 = run_program(&program, regs.clone());
[INFO] [stdout]    |                                       ^^^^^^^^^^^^ help: try removing the `clone` call: `regs`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]  --> src/day18.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn has_path(grid: &Vec<Vec<char>>) -> Option<usize> {
[INFO] [stdout]   |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]   |
[INFO] [stdout] 6 - fn has_path(grid: &Vec<Vec<char>>) -> Option<usize> {
[INFO] [stdout] 6 + fn has_path(grid: &[Vec<char>]) -> Option<usize> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `isize` is unnecessary
[INFO] [stdout]  --> src/day18.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 |     queue.push_back((0 as isize, 0 as isize, 0));
[INFO] [stdout]   |                      ^^^^^^^^^^ help: try: `0_isize`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day21.rs:122:3
[INFO] [stdout]     |
[INFO] [stdout] 122 |         return std::cmp::min(path1_cost, path2_cost);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 122 -         return std::cmp::min(path1_cost, path2_cost);
[INFO] [stdout] 122 +         std::cmp::min(path1_cost, path2_cost)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `isize` is unnecessary
[INFO] [stdout]  --> src/day18.rs:9:31
[INFO] [stdout]   |
[INFO] [stdout] 9 |     queue.push_back((0 as isize, 0 as isize, 0));
[INFO] [stdout]   |                                  ^^^^^^^^^^ help: try: `0_isize`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day21.rs:125:3
[INFO] [stdout]     |
[INFO] [stdout] 125 |         return get_seq_cost(&path1, &DIR_KEYPAD, level - 1, memo);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 125 -         return get_seq_cost(&path1, &DIR_KEYPAD, level - 1, memo);
[INFO] [stdout] 125 +         get_seq_cost(&path1, &DIR_KEYPAD, level - 1, memo)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day20.rs:14:28
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn compute_distances(grid: &Vec<Vec<char>>, start: (usize, usize)) -> Vec<Vec<usize>> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 14 - fn compute_distances(grid: &Vec<Vec<char>>, start: (usize, usize)) -> Vec<Vec<usize>> {
[INFO] [stdout] 14 + fn compute_distances(grid: &[Vec<char>], start: (usize, usize)) -> Vec<Vec<usize>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]    --> src/day20.rs:111:9
[INFO] [stdout]     |
[INFO] [stdout] 111 | / ...                   if time < base_time {
[INFO] [stdout] 112 | | ...                       if base_time - time >= 100 {
[INFO] [stdout] 113 | | ...                           cheats += 1;
[INFO] [stdout] 114 | | ...                       }
[INFO] [stdout] 115 | | ...                   }
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 111 ~                                 if time < base_time
[INFO] [stdout] 112 ~                                     && base_time - time >= 100 {
[INFO] [stdout] 113 |                                         cheats += 1;
[INFO] [stdout] 114 ~                                     }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]   --> src/day23.rs:79:6
[INFO] [stdout]    |
[INFO] [stdout] 79 | /                     if adjacent[i][k] && adjacent[j][k] {
[INFO] [stdout] 80 | |                         if computers[i].starts_with('t')
[INFO] [stdout] 81 | |                             || computers[j].starts_with('t')
[INFO] [stdout] 82 | |                             || computers[k].starts_with('t')
[INFO] [stdout] ...  |
[INFO] [stdout] 86 | |                     }
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]    |
[INFO] [stdout] 79 ~                     if adjacent[i][k] && adjacent[j][k]
[INFO] [stdout] 80 ~                         && (computers[i].starts_with('t')
[INFO] [stdout] 81 |                             || computers[j].starts_with('t')
[INFO] [stdout] 82 ~                             || computers[k].starts_with('t'))
[INFO] [stdout] 83 |                         {
[INFO] [stdout] 84 |                             part1 += 1;
[INFO] [stdout] 85 ~                         }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/day21.rs:46:2
[INFO] [stdout]    |
[INFO] [stdout] 46 |     return true;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 46 -     return true;
[INFO] [stdout] 46 +     true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day21.rs:122:3
[INFO] [stdout]     |
[INFO] [stdout] 122 |         return std::cmp::min(path1_cost, path2_cost);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 122 -         return std::cmp::min(path1_cost, path2_cost);
[INFO] [stdout] 122 +         std::cmp::min(path1_cost, path2_cost)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/day21.rs:125:3
[INFO] [stdout]     |
[INFO] [stdout] 125 |         return get_seq_cost(&path1, &DIR_KEYPAD, level - 1, memo);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 125 -         return get_seq_cost(&path1, &DIR_KEYPAD, level - 1, memo);
[INFO] [stdout] 125 +         get_seq_cost(&path1, &DIR_KEYPAD, level - 1, memo)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day24.rs:64:51
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn validate_adder(operands: &[(u64, u64)], gates: &Vec<Gate>) -> u64 {
[INFO] [stdout]    |                                                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 64 ~ fn validate_adder(operands: &[(u64, u64)], gates: &[Gate]) -> u64 {
[INFO] [stdout] 65 |     let mut good_bits = MASK;
[INFO] [stdout] ...
[INFO] [stdout] 68 |
[INFO] [stdout] 69 ~         if let Some(actual) = try_add(gates.to_owned(), op1, op2) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]    --> src/day24.rs:155:3
[INFO] [stdout]     |
[INFO] [stdout] 155 | /         if gate.operation == Operation::And {
[INFO] [stdout] 156 | |             if consuming_gates.len() != 1 || consuming_gates[0].operation != Operation::Or {
[INFO] [stdout] 157 | |                 println!("Found bad gate (3): {:?}", gate); // We should always be ORing the result of our AND gates
[INFO] [stdout] 158 | |                 bad_gates.push(gate.output.clone());
[INFO] [stdout] ...   |
[INFO] [stdout] 161 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 155 ~         if gate.operation == Operation::And
[INFO] [stdout] 156 ~             && (consuming_gates.len() != 1 || consuming_gates[0].operation != Operation::Or) {
[INFO] [stdout] 157 |                 println!("Found bad gate (3): {:?}", gate); // We should always be ORing the result of our AND gates
[INFO] [stdout] 158 |                 bad_gates.push(gate.output.clone());
[INFO] [stdout] 159 |                 continue;
[INFO] [stdout] 160 ~             }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]   --> src/day23.rs:79:6
[INFO] [stdout]    |
[INFO] [stdout] 79 | /                     if adjacent[i][k] && adjacent[j][k] {
[INFO] [stdout] 80 | |                         if computers[i].starts_with('t')
[INFO] [stdout] 81 | |                             || computers[j].starts_with('t')
[INFO] [stdout] 82 | |                             || computers[k].starts_with('t')
[INFO] [stdout] ...  |
[INFO] [stdout] 86 | |                     }
[INFO] [stdout]    | |_____________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]    |
[INFO] [stdout] 79 ~                     if adjacent[i][k] && adjacent[j][k]
[INFO] [stdout] 80 ~                         && (computers[i].starts_with('t')
[INFO] [stdout] 81 |                             || computers[j].starts_with('t')
[INFO] [stdout] 82 ~                             || computers[k].starts_with('t'))
[INFO] [stdout] 83 |                         {
[INFO] [stdout] 84 |                             part1 += 1;
[INFO] [stdout] 85 ~                         }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/day24.rs:64:51
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn validate_adder(operands: &[(u64, u64)], gates: &Vec<Gate>) -> u64 {
[INFO] [stdout]    |                                                   ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 64 ~ fn validate_adder(operands: &[(u64, u64)], gates: &[Gate]) -> u64 {
[INFO] [stdout] 65 |     let mut good_bits = MASK;
[INFO] [stdout] ...
[INFO] [stdout] 68 |
[INFO] [stdout] 69 ~         if let Some(actual) = try_add(gates.to_owned(), op1, op2) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]    --> src/day24.rs:155:3
[INFO] [stdout]     |
[INFO] [stdout] 155 | /         if gate.operation == Operation::And {
[INFO] [stdout] 156 | |             if consuming_gates.len() != 1 || consuming_gates[0].operation != Operation::Or {
[INFO] [stdout] 157 | |                 println!("Found bad gate (3): {:?}", gate); // We should always be ORing the result of our AND gates
[INFO] [stdout] 158 | |                 bad_gates.push(gate.output.clone());
[INFO] [stdout] ...   |
[INFO] [stdout] 161 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 155 ~         if gate.operation == Operation::And
[INFO] [stdout] 156 ~             && (consuming_gates.len() != 1 || consuming_gates[0].operation != Operation::Or) {
[INFO] [stdout] 157 |                 println!("Found bad gate (3): {:?}", gate); // We should always be ORing the result of our AND gates
[INFO] [stdout] 158 |                 bad_gates.push(gate.output.clone());
[INFO] [stdout] 159 |                 continue;
[INFO] [stdout] 160 ~             }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `filter_map()` will run forever if the iterator repeatedly produces an `Err`
[INFO] [stdout]   --> src/main.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |             .filter_map(|l| l.ok())
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `map_while(Result::ok)`
[INFO] [stdout]    |
[INFO] [stdout] note: this expression returning a `std::io::Lines` may produce an infinite number of `Err` in case of a read error
[INFO] [stdout]   --> src/main.rs:61:11
[INFO] [stdout]    |
[INFO] [stdout] 61 |           input = stdin
[INFO] [stdout]    |  _________________^
[INFO] [stdout] 62 | |             .lock()
[INFO] [stdout] 63 | |             .lines()
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#lines_filter_map_ok
[INFO] [stdout]    = note: `#[warn(clippy::lines_filter_map_ok)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `filter_map()` will run forever if the iterator repeatedly produces an `Err`
[INFO] [stdout]   --> src/main.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |             .filter_map(|l| l.ok())
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `map_while(Result::ok)`
[INFO] [stdout]    |
[INFO] [stdout] note: this expression returning a `std::io::Lines` may produce an infinite number of `Err` in case of a read error
[INFO] [stdout]   --> src/main.rs:61:11
[INFO] [stdout]    |
[INFO] [stdout] 61 |           input = stdin
[INFO] [stdout]    |  _________________^
[INFO] [stdout] 62 | |             .lock()
[INFO] [stdout] 63 | |             .lines()
[INFO] [stdout]    | |____________________^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#lines_filter_map_ok
[INFO] [stdout]    = note: `#[warn(clippy::lines_filter_map_ok)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.62s
[INFO] running `Command { std: "docker" "inspect" "e957f41a1567ece6a6bd38e33179dcc1560818153e342f9c1a3fad426b634942", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e957f41a1567ece6a6bd38e33179dcc1560818153e342f9c1a3fad426b634942", kill_on_drop: false }`
[INFO] [stdout] e957f41a1567ece6a6bd38e33179dcc1560818153e342f9c1a3fad426b634942