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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 512b2a3ca7d9d606ae201b46b8dfcfc1d3b0f065
[INFO] linting Parxer/adventofcode-23 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FParxer%2Fadventofcode-23" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Parxer/adventofcode-23
[INFO] finished tweaking git repo https://github.com/Parxer/adventofcode-23
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[INFO] validating manifest of git repo https://github.com/Parxer/adventofcode-23 on toolchain nightly
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[INFO] crate git repo https://github.com/Parxer/adventofcode-23 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] [stdout] warning: constants have by default a `'static` lifetime
[INFO] [stdout]   --> src/days/day05/mod.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | const STEPS: &'static [&'static str] = &["soil", "fertilizer", "water", "light", "temperature", "humidity", "location"];
[INFO] [stdout]    |              -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_static_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::redundant_static_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constants have by default a `'static` lifetime
[INFO] [stdout]   --> src/days/day05/mod.rs:11:25
[INFO] [stdout]    |
[INFO] [stdout] 11 | const STEPS: &'static [&'static str] = &["soil", "fertilizer", "water", "light", "temperature", "humidity", "location"];
[INFO] [stdout]    |                        -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_static_lifetimes
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::debug`
[INFO] [stdout]  --> src/days/day12/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/days/day03/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constants have by default a `'static` lifetime
[INFO] [stdout]   --> src/days/day05/mod.rs:11:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | const STEPS: &'static [&'static str] = &["soil", "fertilizer", "water", "light", "temperature", "humidity", "location"];
[INFO] [stdout]    |              -^^^^^^^--------------- help: consider removing `'static`: `&[&'static str]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_static_lifetimes
[INFO] [stdout]    = note: `#[warn(clippy::redundant_static_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constants have by default a `'static` lifetime
[INFO] [stdout]   --> src/days/day05/mod.rs:11:25
[INFO] [stdout]    |
[INFO] [stdout] 11 | const STEPS: &'static [&'static str] = &["soil", "fertilizer", "water", "light", "temperature", "humidity", "location"];
[INFO] [stdout]    |                        -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_static_lifetimes
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/days/day06/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/days/day06/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/days/day06/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/days/day07/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/days/day08/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/days/day08/mod.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/days/day11/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/days/day11/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/days/day11/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/days/day12/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/days/day12/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/days/day12/mod.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::debug`
[INFO] [stdout]  --> src/days/day12/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::debug;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/days/day11/mod.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut result: u64 = 0;
[INFO] [stdout]    |                           ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> src/days/day01/mod.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{env, usize};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `usize::<CONST>` will resolve to the respective associated constant
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#legacy_numeric_constants
[INFO] [stdout]   = note: `#[warn(clippy::legacy_numeric_constants)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/days/day01/mod.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |         if !(env::var("AOC_DEBUG").is_ok()) { continue }
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `env::var("AOC_DEBUG").is_err()`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day01/mod.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn run(input: &String, part: Part) -> String {
[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] 16 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 16 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day02/mod.rs:32:19
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn run(input: &String, part: Part) -> String {
[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] 32 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 32 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `from_str_radix` can be replaced with a call to `str::parse`
[INFO] [stdout]   --> src/days/day02/mod.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 let num = u32::from_str_radix(color_iter.next().unwrap(), 10).unwrap();
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `color_iter.next().unwrap().parse::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_str_radix_10
[INFO] [stdout]    = note: `#[warn(clippy::from_str_radix_10)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `from_str_radix` can be replaced with a call to `str::parse`
[INFO] [stdout]   --> src/days/day02/mod.rs:70:31
[INFO] [stdout]    |
[INFO] [stdout] 70 |                     result += u32::from_str_radix(game_num, 10).expect("Failed to parse game num");
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `game_num.parse::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_str_radix_10
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> src/days/day02/mod.rs:74:42
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 result += rgb_max.iter().fold(1, |pow, item  | item * pow);
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `product::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_fold)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day03/mod.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn run(input: &String, part: Part) -> String {
[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] 16 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 16 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/days/day03/mod.rs:17:38
[INFO] [stdout]    |
[INFO] [stdout] 17 |     if part == Part::Second { return format!("N/A") }
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"N/A".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]    = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the variable `i` is used as a loop counter
[INFO] [stdout]   --> src/days/day03/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     for line in input.lines() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `for (i, line) in input.lines().enumerate()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stdout]    = note: `#[warn(clippy::explicit_counter_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]   --> src/days/day03/mod.rs:27:42
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut started_reading_number = line.chars().next().unwrap().is_digit(10);
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `line.chars().next().unwrap().is_ascii_digit()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout]    = note: `#[warn(clippy::is_digit_ascii_radix)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]   --> src/days/day03/mod.rs:31:28
[INFO] [stdout]    |
[INFO] [stdout] 31 |             let is_digit = c.is_digit(10);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `from_str_radix` can be replaced with a call to `str::parse`
[INFO] [stdout]   --> src/days/day03/mod.rs:41:28
[INFO] [stdout]    |
[INFO] [stdout] 41 |                     value: u32::from_str_radix(&line[start[1]..=end[1]], 10).unwrap(),
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `line[start[1]..=end[1]].parse::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_str_radix_10
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `from_str_radix` can be replaced with a call to `str::parse`
[INFO] [stdout]   --> src/days/day03/mod.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 value: u32::from_str_radix(&line[start[1]..=end[1]], 10).unwrap(),
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `line[start[1]..=end[1]].parse::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_str_radix_10
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]  --> src/days/day04/mod.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn run(input: &String, part: Part) -> String {
[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] 9 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 9 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> src/days/day04/mod.rs:36:39
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     card_counts[i] += 1 * card_counts[index];
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^ help: consider reducing it to: `card_counts[index]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout]    = note: `#[warn(clippy::identity_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> src/days/day04/mod.rs:46:59
[INFO] [stdout]    |
[INFO] [stdout] 46 |     if part == Part::Second { result = card_counts.iter().fold(0, |sum, item| item + sum); }
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `sum::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day05/mod.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn run(input: &String, part: Part) -> String {
[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 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 13 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary closure used to substitute value for `Option::None`
[INFO] [stdout]   --> src/days/day05/mod.rs:73:15
[INFO] [stdout]    |
[INFO] [stdout] 73 |     result += values.iter().min().ok_or_else(|| 0).unwrap();
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_lazy_evaluations
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_lazy_evaluations)]` on by default
[INFO] [stdout] help: use `ok_or` instead
[INFO] [stdout]    |
[INFO] [stdout] 73 -     result += values.iter().min().ok_or_else(|| 0).unwrap();
[INFO] [stdout] 73 +     result += values.iter().min().ok_or(0).unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day06/mod.rs:18:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn run(input: &String, part: Part) -> String {
[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 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 18 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::str::Lines<'_>`
[INFO] [stdout]   --> src/days/day06/mod.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut line_iter = input.lines().into_iter();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `input.lines()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]    = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found `.or(Some(…)).unwrap()`
[INFO] [stdout]   --> src/days/day07/mod.rs:32:31
[INFO] [stdout]    |
[INFO] [stdout] 32 |             rest.to_digit(10).or(Some(0)).unwrap()
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or(0)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_then_unwrap
[INFO] [stdout]    = note: `#[warn(clippy::or_then_unwrap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]   --> src/days/day07/mod.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 |     if hand.chars().find(|c| *c == 'J') == None { return get_hand_type(hand) }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `Option::is_none()` instead: `hand.chars().find(|c| *c == 'J').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout]    = note: `#[warn(clippy::partialeq_to_none)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: iterating on a map's values
[INFO] [stdout]   --> src/days/day07/mod.rs:74:32
[INFO] [stdout]    |
[INFO] [stdout] 74 |       let mut hand: Vec<usize> = hand.chars().fold(HashMap::<char, usize>::new(), |mut h, x | {
[INFO] [stdout]    |  ________________________________^
[INFO] [stdout] 75 | |         *h.entry(x).or_default() += 1;
[INFO] [stdout] 76 | |         h
[INFO] [stdout] 77 | |     }).into_iter().map(|(_, val)| val).collect();
[INFO] [stdout]    | |______________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_kv_map
[INFO] [stdout]    = note: `#[warn(clippy::iter_kv_map)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 74 ~     let mut hand: Vec<usize> = hand.chars().fold(HashMap::<char, usize>::new(), |mut h, x | {
[INFO] [stdout] 75 +         *h.entry(x).or_default() += 1;
[INFO] [stdout] 76 +         h
[INFO] [stdout] 77 ~     }).into_values().collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you don't need to add `&` to all patterns
[INFO] [stdout]   --> src/days/day07/mod.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | /     match max_two[0] {
[INFO] [stdout] 82 | |         &5 => { HandType::FiveOfAKind },
[INFO] [stdout] 83 | |         &4 => { HandType::FourOfAKind },
[INFO] [stdout] 84 | |         &3 => { if *max_two[1] == 2 { HandType::FullHouse } else { HandType::ThreeOfAKind } },
[INFO] [stdout] 85 | |         &2 => { if *max_two[1] == 2 { HandType::TwoPair } else { HandType::OnePair } },
[INFO] [stdout] 86 | |         _ => HandType::HighCard
[INFO] [stdout] 87 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stdout]    = note: `#[warn(clippy::match_ref_pats)]` on by default
[INFO] [stdout] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stdout]    |
[INFO] [stdout] 81 ~     match *max_two[0] {
[INFO] [stdout] 82 ~         5 => { HandType::FiveOfAKind },
[INFO] [stdout] 83 ~         4 => { HandType::FourOfAKind },
[INFO] [stdout] 84 ~         3 => { if *max_two[1] == 2 { HandType::FullHouse } else { HandType::ThreeOfAKind } },
[INFO] [stdout] 85 ~         2 => { if *max_two[1] == 2 { HandType::TwoPair } else { HandType::OnePair } },
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day07/mod.rs:90:19
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn run(input: &String, part: Part) -> String {
[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] 90 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 90 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day08/mod.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn run(input: &String, part: Part) -> String {
[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] 10 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 10 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day09/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     return if !new_steps.iter().any(|&s| s != 0) { steps[0] } else { match part {
[INFO] [stdout] 16 | |         Part::First => { steps.last().unwrap() + get_next_step(new_steps, part) }
[INFO] [stdout] 17 | |         Part::Second => { steps[0] - get_next_step(new_steps, part) }
[INFO] [stdout] 18 | |     } }
[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] 15 ~     if !new_steps.iter().any(|&s| s != 0) { steps[0] } else { match part {
[INFO] [stdout] 16 +         Part::First => { steps.last().unwrap() + get_next_step(new_steps, part) }
[INFO] [stdout] 17 +         Part::Second => { steps[0] - get_next_step(new_steps, part) }
[INFO] [stdout] 18 +     } }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day09/mod.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn run(input: &String, part: Part) -> String {
[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] 21 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 21 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day10/mod.rs:33:27
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 None => { 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] 33 -                 None => { return None; }
[INFO] [stdout] 33 +                 None => { None}
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day10/mod.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     return Some(ret)}
[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] 35 -                     return Some(ret)}
[INFO] [stdout] 35 +                     Some(ret)}
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `result` is never read
[INFO] [stdout]   --> src/days/day11/mod.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut result: u64 = 0;
[INFO] [stdout]    |                           ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day10/mod.rs:52:19
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn run(input: &String, part: Part) -> String {
[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] 52 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 52 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]   --> src/days/day10/mod.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |         if start == None {
[INFO] [stdout]    |            ^^^^^^^^^^^^^ help: use `Option::is_none()` instead: `start.is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/days/day10/mod.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     if path.len() == 0 { return format!("No route found!") }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `path.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/days/day10/mod.rs:68:33
[INFO] [stdout]    |
[INFO] [stdout] 68 |     if path.len() == 0 { return format!("No route found!") }
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"No route found!".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/days/day10/mod.rs:83:16
[INFO] [stdout]    |
[INFO] [stdout] 83 |             if path_length % 2 == 0 { path_length -= 1; }
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^ help: replace with: `path_length.is_multiple_of(2)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]    = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manually reimplementing `div_ceil`
[INFO] [stdout]   --> src/days/day10/mod.rs:84:22
[INFO] [stdout]    |
[INFO] [stdout] 84 |             result = (u32::try_from(path_length).unwrap() +1 ) / 2;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `u32::try_from(path_length).unwrap().div_ceil(2)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_div_ceil
[INFO] [stdout]    = note: `#[warn(clippy::manual_div_ceil)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `x` is used to index `grid`
[INFO] [stdout]   --> src/days/day10/mod.rs:88:22
[INFO] [stdout]    |
[INFO] [stdout] 88 |             for x 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] 88 -             for x in 0..grid.len() {
[INFO] [stdout] 88 +             for (x, <item>) in grid.iter().enumerate() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `yy` is only used to index `grid`
[INFO] [stdout]   --> src/days/day10/mod.rs:96:43
[INFO] [stdout]    |
[INFO] [stdout] 96 | ...                   for yy in y+1..grid[x].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
[INFO] [stdout]    |
[INFO] [stdout] 96 -                                 for yy in y+1..grid[x].len() {
[INFO] [stdout] 96 +                                 for <item> in grid.iter().take(grid[x].len()).skip(y+1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `yy` is only used to index `grid`
[INFO] [stdout]    --> src/days/day10/mod.rs:105:43
[INFO] [stdout]     |
[INFO] [stdout] 105 | ...                   for yy in y+1..grid[x].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
[INFO] [stdout]     |
[INFO] [stdout] 105 -                                 for yy in y+1..grid[x].len() {
[INFO] [stdout] 105 +                                 for <item> in grid.iter().take(grid[x].len()).skip(y+1) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day11/mod.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn run_with_expansion_rate(input: &String, expansion_rate: usize) -> String {
[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] 16 - fn run_with_expansion_rate(input: &String, expansion_rate: usize) -> String {
[INFO] [stdout] 16 + fn run_with_expansion_rate(input: &str, expansion_rate: usize) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `r` is only used to index `grid`
[INFO] [stdout]   --> src/days/day11/mod.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |         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
[INFO] [stdout]    |
[INFO] [stdout] 35 -         for r in 0..grid.len() {
[INFO] [stdout] 35 +         for <item> in &grid {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `r` is used to index `grid`
[INFO] [stdout]   --> src/days/day11/mod.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |     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] 44 -     for r in 0..grid.len() {
[INFO] [stdout] 44 +     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/days/day11/mod.rs:45:18
[INFO] [stdout]    |
[INFO] [stdout] 45 |         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] 45 -         for c in 0..grid[r].len() {
[INFO] [stdout] 45 +         for (c, <item>) in grid.iter().enumerate().take(grid[r].len()) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day12/mod.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn run(input: &String, part: Part) -> String {
[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] 11 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 11 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/days/day12/mod.rs:12:38
[INFO] [stdout]    |
[INFO] [stdout] 12 |     if part == Part::Second { return format!("N/A"); } // TODO: delete later
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"N/A".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day12/mod.rs:25:31
[INFO] [stdout]    |
[INFO] [stdout] 25 |                     None => { 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] 25 -                     None => { return None }
[INFO] [stdout] 25 +                     None => { None }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day12/mod.rs:27:52
[INFO] [stdout]    |
[INFO] [stdout] 27 |                         if *count != num_missing { 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] 27 -                         if *count != num_missing { return None }
[INFO] [stdout] 27 +                         if *count != num_missing { None }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     if days.len() == 0 { days.push(today.day()); }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `days.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> src/days/day01/mod.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{env, usize};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `usize::<CONST>` will resolve to the respective associated constant
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#legacy_numeric_constants
[INFO] [stdout]   = note: `#[warn(clippy::legacy_numeric_constants)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/days/day01/mod.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |         if !(env::var("AOC_DEBUG").is_ok()) { continue }
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `env::var("AOC_DEBUG").is_err()`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day01/mod.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn run(input: &String, part: Part) -> String {
[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] 16 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 16 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day02/mod.rs:32:19
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn run(input: &String, part: Part) -> String {
[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] 32 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 32 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `from_str_radix` can be replaced with a call to `str::parse`
[INFO] [stdout]   --> src/days/day02/mod.rs:49:27
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 let num = u32::from_str_radix(color_iter.next().unwrap(), 10).unwrap();
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `color_iter.next().unwrap().parse::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_str_radix_10
[INFO] [stdout]    = note: `#[warn(clippy::from_str_radix_10)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `from_str_radix` can be replaced with a call to `str::parse`
[INFO] [stdout]   --> src/days/day02/mod.rs:70:31
[INFO] [stdout]    |
[INFO] [stdout] 70 |                     result += u32::from_str_radix(game_num, 10).expect("Failed to parse game num");
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `game_num.parse::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_str_radix_10
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> src/days/day02/mod.rs:74:42
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 result += rgb_max.iter().fold(1, |pow, item  | item * pow);
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `product::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_fold)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day03/mod.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn run(input: &String, part: Part) -> String {
[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] 16 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 16 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/days/day03/mod.rs:17:38
[INFO] [stdout]    |
[INFO] [stdout] 17 |     if part == Part::Second { return format!("N/A") }
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"N/A".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout]    = note: `#[warn(clippy::useless_format)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the variable `i` is used as a loop counter
[INFO] [stdout]   --> src/days/day03/mod.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     for line in input.lines() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `for (i, line) in input.lines().enumerate()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stdout]    = note: `#[warn(clippy::explicit_counter_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]   --> src/days/day03/mod.rs:27:42
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let mut started_reading_number = line.chars().next().unwrap().is_digit(10);
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `line.chars().next().unwrap().is_ascii_digit()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout]    = note: `#[warn(clippy::is_digit_ascii_radix)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `char::is_digit` with literal radix of 10
[INFO] [stdout]   --> src/days/day03/mod.rs:31:28
[INFO] [stdout]    |
[INFO] [stdout] 31 |             let is_digit = c.is_digit(10);
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^ help: try: `c.is_ascii_digit()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#is_digit_ascii_radix
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `from_str_radix` can be replaced with a call to `str::parse`
[INFO] [stdout]   --> src/days/day03/mod.rs:41:28
[INFO] [stdout]    |
[INFO] [stdout] 41 |                     value: u32::from_str_radix(&line[start[1]..=end[1]], 10).unwrap(),
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `line[start[1]..=end[1]].parse::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_str_radix_10
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `from_str_radix` can be replaced with a call to `str::parse`
[INFO] [stdout]   --> src/days/day03/mod.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |                 value: u32::from_str_radix(&line[start[1]..=end[1]], 10).unwrap(),
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `line[start[1]..=end[1]].parse::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_str_radix_10
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]  --> src/days/day04/mod.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn run(input: &String, part: Part) -> String {
[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] 9 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 9 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this operation has no effect
[INFO] [stdout]   --> src/days/day04/mod.rs:36:39
[INFO] [stdout]    |
[INFO] [stdout] 36 |                     card_counts[i] += 1 * card_counts[index];
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^^^^ help: consider reducing it to: `card_counts[index]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_op
[INFO] [stdout]    = note: `#[warn(clippy::identity_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.fold` can be written more succinctly using another method
[INFO] [stdout]   --> src/days/day04/mod.rs:46:59
[INFO] [stdout]    |
[INFO] [stdout] 46 |     if part == Part::Second { result = card_counts.iter().fold(0, |sum, item| item + sum); }
[INFO] [stdout]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `sum::<u32>()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day05/mod.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn run(input: &String, part: Part) -> String {
[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 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 13 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary closure used to substitute value for `Option::None`
[INFO] [stdout]   --> src/days/day05/mod.rs:73:15
[INFO] [stdout]    |
[INFO] [stdout] 73 |     result += values.iter().min().ok_or_else(|| 0).unwrap();
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_lazy_evaluations
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_lazy_evaluations)]` on by default
[INFO] [stdout] help: use `ok_or` instead
[INFO] [stdout]    |
[INFO] [stdout] 73 -     result += values.iter().min().ok_or_else(|| 0).unwrap();
[INFO] [stdout] 73 +     result += values.iter().min().ok_or(0).unwrap();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day06/mod.rs:18:19
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn run(input: &String, part: Part) -> String {
[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 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 18 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::str::Lines<'_>`
[INFO] [stdout]   --> src/days/day06/mod.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut line_iter = input.lines().into_iter();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `input.lines()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]    = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found `.or(Some(…)).unwrap()`
[INFO] [stdout]   --> src/days/day07/mod.rs:32:31
[INFO] [stdout]    |
[INFO] [stdout] 32 |             rest.to_digit(10).or(Some(0)).unwrap()
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^ help: try: `unwrap_or(0)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_then_unwrap
[INFO] [stdout]    = note: `#[warn(clippy::or_then_unwrap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]   --> src/days/day07/mod.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 |     if hand.chars().find(|c| *c == 'J') == None { return get_hand_type(hand) }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `Option::is_none()` instead: `hand.chars().find(|c| *c == 'J').is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout]    = note: `#[warn(clippy::partialeq_to_none)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: iterating on a map's values
[INFO] [stdout]   --> src/days/day07/mod.rs:74:32
[INFO] [stdout]    |
[INFO] [stdout] 74 |       let mut hand: Vec<usize> = hand.chars().fold(HashMap::<char, usize>::new(), |mut h, x | {
[INFO] [stdout]    |  ________________________________^
[INFO] [stdout] 75 | |         *h.entry(x).or_default() += 1;
[INFO] [stdout] 76 | |         h
[INFO] [stdout] 77 | |     }).into_iter().map(|(_, val)| val).collect();
[INFO] [stdout]    | |______________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_kv_map
[INFO] [stdout]    = note: `#[warn(clippy::iter_kv_map)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]    |
[INFO] [stdout] 74 ~     let mut hand: Vec<usize> = hand.chars().fold(HashMap::<char, usize>::new(), |mut h, x | {
[INFO] [stdout] 75 +         *h.entry(x).or_default() += 1;
[INFO] [stdout] 76 +         h
[INFO] [stdout] 77 ~     }).into_values().collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you don't need to add `&` to all patterns
[INFO] [stdout]   --> src/days/day07/mod.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | /     match max_two[0] {
[INFO] [stdout] 82 | |         &5 => { HandType::FiveOfAKind },
[INFO] [stdout] 83 | |         &4 => { HandType::FourOfAKind },
[INFO] [stdout] 84 | |         &3 => { if *max_two[1] == 2 { HandType::FullHouse } else { HandType::ThreeOfAKind } },
[INFO] [stdout] 85 | |         &2 => { if *max_two[1] == 2 { HandType::TwoPair } else { HandType::OnePair } },
[INFO] [stdout] 86 | |         _ => HandType::HighCard
[INFO] [stdout] 87 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stdout]    = note: `#[warn(clippy::match_ref_pats)]` on by default
[INFO] [stdout] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stdout]    |
[INFO] [stdout] 81 ~     match *max_two[0] {
[INFO] [stdout] 82 ~         5 => { HandType::FiveOfAKind },
[INFO] [stdout] 83 ~         4 => { HandType::FourOfAKind },
[INFO] [stdout] 84 ~         3 => { if *max_two[1] == 2 { HandType::FullHouse } else { HandType::ThreeOfAKind } },
[INFO] [stdout] 85 ~         2 => { if *max_two[1] == 2 { HandType::TwoPair } else { HandType::OnePair } },
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day07/mod.rs:90:19
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub fn run(input: &String, part: Part) -> String {
[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] 90 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 90 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day08/mod.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn run(input: &String, part: Part) -> String {
[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] 10 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 10 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day09/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     return if !new_steps.iter().any(|&s| s != 0) { steps[0] } else { match part {
[INFO] [stdout] 16 | |         Part::First => { steps.last().unwrap() + get_next_step(new_steps, part) }
[INFO] [stdout] 17 | |         Part::Second => { steps[0] - get_next_step(new_steps, part) }
[INFO] [stdout] 18 | |     } }
[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] 15 ~     if !new_steps.iter().any(|&s| s != 0) { steps[0] } else { match part {
[INFO] [stdout] 16 +         Part::First => { steps.last().unwrap() + get_next_step(new_steps, part) }
[INFO] [stdout] 17 +         Part::Second => { steps[0] - get_next_step(new_steps, part) }
[INFO] [stdout] 18 +     } }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day09/mod.rs:21:19
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn run(input: &String, part: Part) -> String {
[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] 21 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 21 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day10/mod.rs:33:27
[INFO] [stdout]    |
[INFO] [stdout] 33 |                 None => { 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] 33 -                 None => { return None; }
[INFO] [stdout] 33 +                 None => { None}
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day10/mod.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     return Some(ret)}
[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] 35 -                     return Some(ret)}
[INFO] [stdout] 35 +                     Some(ret)}
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day10/mod.rs:52:19
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub fn run(input: &String, part: Part) -> String {
[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] 52 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 52 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: binary comparison to literal `Option::None`
[INFO] [stdout]   --> src/days/day10/mod.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |         if start == None {
[INFO] [stdout]    |            ^^^^^^^^^^^^^ help: use `Option::is_none()` instead: `start.is_none()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#partialeq_to_none
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/days/day10/mod.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     if path.len() == 0 { return format!("No route found!") }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `path.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/days/day10/mod.rs:68:33
[INFO] [stdout]    |
[INFO] [stdout] 68 |     if path.len() == 0 { return format!("No route found!") }
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"No route found!".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/days/day10/mod.rs:83:16
[INFO] [stdout]    |
[INFO] [stdout] 83 |             if path_length % 2 == 0 { path_length -= 1; }
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^ help: replace with: `path_length.is_multiple_of(2)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]    = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manually reimplementing `div_ceil`
[INFO] [stdout]   --> src/days/day10/mod.rs:84:22
[INFO] [stdout]    |
[INFO] [stdout] 84 |             result = (u32::try_from(path_length).unwrap() +1 ) / 2;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `.div_ceil()`: `u32::try_from(path_length).unwrap().div_ceil(2)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_div_ceil
[INFO] [stdout]    = note: `#[warn(clippy::manual_div_ceil)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `x` is used to index `grid`
[INFO] [stdout]   --> src/days/day10/mod.rs:88:22
[INFO] [stdout]    |
[INFO] [stdout] 88 |             for x 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] 88 -             for x in 0..grid.len() {
[INFO] [stdout] 88 +             for (x, <item>) in grid.iter().enumerate() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `yy` is only used to index `grid`
[INFO] [stdout]   --> src/days/day10/mod.rs:96:43
[INFO] [stdout]    |
[INFO] [stdout] 96 | ...                   for yy in y+1..grid[x].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
[INFO] [stdout]    |
[INFO] [stdout] 96 -                                 for yy in y+1..grid[x].len() {
[INFO] [stdout] 96 +                                 for <item> in grid.iter().take(grid[x].len()).skip(y+1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `yy` is only used to index `grid`
[INFO] [stdout]    --> src/days/day10/mod.rs:105:43
[INFO] [stdout]     |
[INFO] [stdout] 105 | ...                   for yy in y+1..grid[x].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
[INFO] [stdout]     |
[INFO] [stdout] 105 -                                 for yy in y+1..grid[x].len() {
[INFO] [stdout] 105 +                                 for <item> in grid.iter().take(grid[x].len()).skip(y+1) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day11/mod.rs:16:35
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn run_with_expansion_rate(input: &String, expansion_rate: usize) -> String {
[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] 16 - fn run_with_expansion_rate(input: &String, expansion_rate: usize) -> String {
[INFO] [stdout] 16 + fn run_with_expansion_rate(input: &str, expansion_rate: usize) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `r` is only used to index `grid`
[INFO] [stdout]   --> src/days/day11/mod.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |         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
[INFO] [stdout]    |
[INFO] [stdout] 35 -         for r in 0..grid.len() {
[INFO] [stdout] 35 +         for <item> in &grid {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `r` is used to index `grid`
[INFO] [stdout]   --> src/days/day11/mod.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 |     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] 44 -     for r in 0..grid.len() {
[INFO] [stdout] 44 +     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/days/day11/mod.rs:45:18
[INFO] [stdout]    |
[INFO] [stdout] 45 |         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] 45 -         for c in 0..grid[r].len() {
[INFO] [stdout] 45 +         for (c, <item>) in grid.iter().enumerate().take(grid[r].len()) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&String` instead of `&str` involves a new object where a slice will do
[INFO] [stdout]   --> src/days/day12/mod.rs:11:19
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn run(input: &String, part: Part) -> String {
[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] 11 - pub fn run(input: &String, part: Part) -> String {
[INFO] [stdout] 11 + pub fn run(input: &str, part: Part) -> String {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `format!`
[INFO] [stdout]   --> src/days/day12/mod.rs:12:38
[INFO] [stdout]    |
[INFO] [stdout] 12 |     if part == Part::Second { return format!("N/A"); } // TODO: delete later
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^ help: consider using `.to_string()`: `"N/A".to_string()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day12/mod.rs:25:31
[INFO] [stdout]    |
[INFO] [stdout] 25 |                     None => { 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] 25 -                     None => { return None }
[INFO] [stdout] 25 +                     None => { None }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/days/day12/mod.rs:27:52
[INFO] [stdout]    |
[INFO] [stdout] 27 |                         if *count != num_missing { 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] 27 -                         if *count != num_missing { return None }
[INFO] [stdout] 27 +                         if *count != num_missing { None }
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     if days.len() == 0 { days.push(today.day()); }
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `days.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.79s
[INFO] running `Command { std: "docker" "inspect" "a5e51999db61adfb7496483d281efc65c67181c7857d32681beb647a92556425", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5e51999db61adfb7496483d281efc65c67181c7857d32681beb647a92556425", kill_on_drop: false }`
[INFO] [stdout] a5e51999db61adfb7496483d281efc65c67181c7857d32681beb647a92556425