[INFO] cloning repository https://github.com/jhwz/advent-of-code-2024
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jhwz/advent-of-code-2024" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjhwz%2Fadvent-of-code-2024", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjhwz%2Fadvent-of-code-2024'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4eba48916a88f19faa660912360f4d69067e57e2
[INFO] linting jhwz/advent-of-code-2024 against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjhwz%2Fadvent-of-code-2024" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jhwz/advent-of-code-2024
[INFO] finished tweaking git repo https://github.com/jhwz/advent-of-code-2024
[INFO] tweaked toml for git repo https://github.com/jhwz/advent-of-code-2024 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jhwz/advent-of-code-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/jhwz/advent-of-code-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 }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 116f671f8ad7a6d1b5c9f5d7fd8ccabb541d6bc310d731e2dbb251f26a0385b7
[INFO] running `Command { std: "docker" "start" "-a" "116f671f8ad7a6d1b5c9f5d7fd8ccabb541d6bc310d731e2dbb251f26a0385b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "116f671f8ad7a6d1b5c9f5d7fd8ccabb541d6bc310d731e2dbb251f26a0385b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "116f671f8ad7a6d1b5c9f5d7fd8ccabb541d6bc310d731e2dbb251f26a0385b7", kill_on_drop: false }`
[INFO] [stdout] 116f671f8ad7a6d1b5c9f5d7fd8ccabb541d6bc310d731e2dbb251f26a0385b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 707b69597b3ab3bf6f906a3b7a2f24f2bdbee5255c88f8cb368c385252438427
[INFO] running `Command { std: "docker" "start" "-a" "707b69597b3ab3bf6f906a3b7a2f24f2bdbee5255c88f8cb368c385252438427", kill_on_drop: false }`
[INFO] [stderr]     Checking advent-of-code-2024 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ops::Index`
[INFO] [stdout]  --> src/bin/day16/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     ops::Index,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> src/bin/day16/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     i64,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `i64::<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: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]   --> src/bin/day16/main.rs:92:20
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut queue: VecDeque<(Reindeer, i64, Vec<(usize, usize)>)> = VecDeque::new();
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout]    = note: `#[warn(clippy::type_complexity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         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]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 27 -         return true;
[INFO] [stdout] 27 +         true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `!RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day2/main.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |             if diff < 1 || diff > 3 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^ help: use: `!(1..=3).contains(&diff)`
[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: unused import: `ops::Index`
[INFO] [stdout]  --> src/bin/day14/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ops::Index,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting integer literal to `usize` is unnecessary
[INFO] [stdout]   --> src/bin/day10/main.rs:17:25
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut grid = vec![0 as usize; (nrows * ncols) as usize];
[INFO] [stdout]    |                         ^^^^^^^^^^ help: try: `0_usize`
[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: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]   --> src/bin/day10/main.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let next = (pos.0 as i32 + offset.0, pos.1 as i32 + offset.1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: try: `pos.0`
[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: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]   --> src/bin/day10/main.rs:39:50
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let next = (pos.0 as i32 + offset.0, pos.1 as i32 + offset.1);
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^ help: try: `pos.1`
[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: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]   --> src/bin/day10/main.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let next = (pos.0 as i32 + offset.0, pos.1 as i32 + offset.1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: try: `pos.0`
[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: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]   --> src/bin/day10/main.rs:61:50
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let next = (pos.0 as i32 + offset.0, pos.1 as i32 + offset.1);
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^ help: try: `pos.1`
[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: importing legacy numeric constants
[INFO] [stdout]  --> src/bin/day9/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     isize,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `isize::<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: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day9/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     return sum;
[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] 45 -     return sum;
[INFO] [stdout] 45 +     sum
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `values`
[INFO] [stdout]   --> src/bin/day9/main.rs:39:14
[INFO] [stdout]    |
[INFO] [stdout] 39 |     for i in 0..values.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] 39 -     for i in 0..values.len() {
[INFO] [stdout] 39 +     for (i, <item>) in values.iter().enumerate() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]   --> src/bin/day6/main.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | ) -> (HashSet<((i32, i32), (i32, i32))>, bool) {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout]    = note: `#[warn(clippy::type_complexity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this multiplication by -1 can be written more succinctly
[INFO] [stdout]   --> src/bin/day6/main.rs:35:27
[INFO] [stdout]    |
[INFO] [stdout] 35 |             dir = (dir.1, dir.0 * -1);
[INFO] [stdout]    |                           ^^^^^^^^^^ help: consider using: `-dir.0`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#neg_multiply
[INFO] [stdout]    = note: `#[warn(clippy::neg_multiply)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `free`
[INFO] [stdout]    --> src/bin/day9/main.rs:108:18
[INFO] [stdout]     |
[INFO] [stdout] 108 |         for i in 0..free.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] 108 -         for i in 0..free.len() {
[INFO] [stdout] 108 +         for <item> in &mut free {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::Index`
[INFO] [stdout]  --> src/bin/day14/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ops::Index,
[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: `ops::Index`
[INFO] [stdout]  --> src/bin/day16/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     ops::Index,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/bin/day14/main.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | /     loop {
[INFO] [stdout] 71 | |         seconds += 1;
[INFO] [stdout] 72 | |         if seconds % 1_000_000 == 0 {
[INFO] [stdout] 73 | |             println!("Seconds: {}", seconds);
[INFO] [stdout] ...  |
[INFO] [stdout] 82 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 83 |
[INFO] [stdout] 84 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> src/bin/day13/main.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 | /         match machine.solve() {
[INFO] [stdout] 76 | |             Some(presses) => part1 += presses,
[INFO] [stdout] 77 | |             None => (),
[INFO] [stdout] 78 | |         }
[INFO] [stdout]    | |_________^ help: try: `if let Some(presses) = machine.solve() { part1 += presses }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]    = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> src/bin/day13/main.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 | /         match machine.solve() {
[INFO] [stdout] 86 | |             Some(presses) => part2 += presses,
[INFO] [stdout] 87 | |             None => (),
[INFO] [stdout] 88 | |         }
[INFO] [stdout]    | |_________^ help: try: `if let Some(presses) = machine.solve() { part2 += presses }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant closure
[INFO] [stdout]   --> src/bin/day11/main.rs:13:14
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .map(|s| String::from(s))
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^ help: replace the closure with the associated function itself: `String::from`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stdout]    = note: `#[warn(clippy::redundant_closure)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/bin/day7/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::HashMap,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/bin/day11/main.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |             _ if value.len() % 2 == 0 => {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^ help: replace with: `value.len().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: unreachable expression
[INFO] [stdout]   --> src/bin/day14/main.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | /     loop {
[INFO] [stdout] 71 | |         seconds += 1;
[INFO] [stdout] 72 | |         if seconds % 1_000_000 == 0 {
[INFO] [stdout] 73 | |             println!("Seconds: {}", seconds);
[INFO] [stdout] ...  |
[INFO] [stdout] 82 | |     }
[INFO] [stdout]    | |_____- any code following this expression is unreachable
[INFO] [stdout] 83 |
[INFO] [stdout] 84 |       Ok(())
[INFO] [stdout]    |       ^^^^^^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison to empty slice
[INFO] [stdout]   --> src/bin/day5/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |         if line == "" {
[INFO] [stdout]    |            ^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#comparison_to_empty
[INFO] [stdout]    = note: `#[warn(clippy::comparison_to_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `or_insert` to construct default value
[INFO] [stdout]   --> src/bin/day5/main.rs:29:42
[INFO] [stdout]    |
[INFO] [stdout] 29 |             let curr = orders.entry(min).or_insert(Vec::new());
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^ help: try: `or_default()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unwrap_or_default
[INFO] [stdout]    = note: `#[warn(clippy::unwrap_or_default)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this looks like you are swapping elements of `grid` manually
[INFO] [stdout]    --> src/bin/day15/main.rs:158:37
[INFO] [stdout]     |
[INFO] [stdout] 158 | / ...                   let next_value = grid[next.0 * bounds.1 + next.1];
[INFO] [stdout] 159 | | ...                   grid[next.0 * bounds.1 + next.1] = grid[idx];
[INFO] [stdout] 160 | | ...                   grid[idx] = next_value;
[INFO] [stdout]     | |_____________________________________________^ help: try: `grid.swap(next.0 * bounds.1 + next.1, idx);`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stdout]     = note: `#[warn(clippy::manual_swap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day14/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     return v >= bounds.0 && v < bounds.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]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 25 -     return v >= bounds.0 && v < bounds.1;
[INFO] [stdout] 25 +     v >= bounds.0 && v < bounds.1
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day14/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     return v >= bounds.0 && v < bounds.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]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 25 -     return v >= bounds.0 && v < bounds.1;
[INFO] [stdout] 25 +     v >= bounds.0 && v < bounds.1
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `print!()` with a format string that ends in a single newline
[INFO] [stdout]    --> src/bin/day14/main.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 print!("\n")
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stdout]     = note: `#[warn(clippy::print_with_newline)]` on by default
[INFO] [stdout] help: use `println!` instead
[INFO] [stdout]     |
[INFO] [stdout] 104 -                 print!("\n")
[INFO] [stdout] 104 +                 println!()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `vec!`
[INFO] [stdout]   --> src/bin/day14/main.rs:50:21
[INFO] [stdout]    |
[INFO] [stdout] 50 |       let quadrants = vec![
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 51 | |         ((0, 50), (0, 51)),
[INFO] [stdout] 52 | |         ((0, 50), (52, 103)),
[INFO] [stdout] 53 | |         ((51, 101), (0, 51)),
[INFO] [stdout] 54 | |         ((51, 101), (52, 103)),
[INFO] [stdout] 55 | |     ];
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stdout]    = note: `#[warn(clippy::useless_vec)]` on by default
[INFO] [stdout] help: you can use an array directly
[INFO] [stdout]    |
[INFO] [stdout] 50 ~     let quadrants = [((0, 50), (0, 51)),
[INFO] [stdout] 51 +         ((0, 50), (52, 103)),
[INFO] [stdout] 52 +         ((51, 101), (0, 51)),
[INFO] [stdout] 53 ~         ((51, 101), (52, 103))];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `vec!`
[INFO] [stdout]   --> src/bin/day14/main.rs:56:22
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let mut counts = vec![0; 4];
[INFO] [stdout]    |                      ^^^^^^^^^^ help: you can use an array directly: `[0; 4]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/bin/day7/main.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |         if rest.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rest.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: length comparison to zero
[INFO] [stdout]   --> src/bin/day7/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         if rest.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rest.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: using `print!()` with a format string that ends in a single newline
[INFO] [stdout]    --> src/bin/day14/main.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 print!("\n")
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#print_with_newline
[INFO] [stdout]     = note: `#[warn(clippy::print_with_newline)]` on by default
[INFO] [stdout] help: use `println!` instead
[INFO] [stdout]     |
[INFO] [stdout] 104 -                 print!("\n")
[INFO] [stdout] 104 +                 println!()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `vec!`
[INFO] [stdout]   --> src/bin/day14/main.rs:50:21
[INFO] [stdout]    |
[INFO] [stdout] 50 |       let quadrants = vec![
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 51 | |         ((0, 50), (0, 51)),
[INFO] [stdout] 52 | |         ((0, 50), (52, 103)),
[INFO] [stdout] 53 | |         ((51, 101), (0, 51)),
[INFO] [stdout] 54 | |         ((51, 101), (52, 103)),
[INFO] [stdout] 55 | |     ];
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stdout]    = note: `#[warn(clippy::useless_vec)]` on by default
[INFO] [stdout] help: you can use an array directly
[INFO] [stdout]    |
[INFO] [stdout] 50 ~     let quadrants = [((0, 50), (0, 51)),
[INFO] [stdout] 51 +         ((0, 50), (52, 103)),
[INFO] [stdout] 52 +         ((51, 101), (0, 51)),
[INFO] [stdout] 53 ~         ((51, 101), (52, 103))];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless use of `vec!`
[INFO] [stdout]   --> src/bin/day14/main.rs:56:22
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let mut counts = vec![0; 4];
[INFO] [stdout]    |                      ^^^^^^^^^^ help: you can use an array directly: `[0; 4]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: importing legacy numeric constants
[INFO] [stdout]  --> src/bin/day16/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     i64,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `i64::<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: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/bin/day7/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::HashMap,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]   --> src/bin/day16/main.rs:92:20
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut queue: VecDeque<(Reindeer, i64, Vec<(usize, usize)>)> = VecDeque::new();
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout]    = note: `#[warn(clippy::type_complexity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stdout]   --> src/bin/day6/main.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 | ) -> (HashSet<((i32, i32), (i32, i32))>, bool) {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stdout]    = note: `#[warn(clippy::type_complexity)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this multiplication by -1 can be written more succinctly
[INFO] [stdout]   --> src/bin/day6/main.rs:35:27
[INFO] [stdout]    |
[INFO] [stdout] 35 |             dir = (dir.1, dir.0 * -1);
[INFO] [stdout]    |                           ^^^^^^^^^^ help: consider using: `-dir.0`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#neg_multiply
[INFO] [stdout]    = note: `#[warn(clippy::neg_multiply)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> src/bin/day13/main.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 | /         match machine.solve() {
[INFO] [stdout] 76 | |             Some(presses) => part1 += presses,
[INFO] [stdout] 77 | |             None => (),
[INFO] [stdout] 78 | |         }
[INFO] [stdout]    | |_________^ help: try: `if let Some(presses) = machine.solve() { part1 += presses }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]    = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]   --> src/bin/day13/main.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 | /         match machine.solve() {
[INFO] [stdout] 86 | |             Some(presses) => part2 += presses,
[INFO] [stdout] 87 | |             None => (),
[INFO] [stdout] 88 | |         }
[INFO] [stdout]    | |_________^ help: try: `if let Some(presses) = machine.solve() { part2 += presses }`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this looks like you are swapping elements of `grid` manually
[INFO] [stdout]    --> src/bin/day15/main.rs:158:37
[INFO] [stdout]     |
[INFO] [stdout] 158 | / ...                   let next_value = grid[next.0 * bounds.1 + next.1];
[INFO] [stdout] 159 | | ...                   grid[next.0 * bounds.1 + next.1] = grid[idx];
[INFO] [stdout] 160 | | ...                   grid[idx] = next_value;
[INFO] [stdout]     | |_____________________________________________^ help: try: `grid.swap(next.0 * bounds.1 + next.1, idx);`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_swap
[INFO] [stdout]     = note: `#[warn(clippy::manual_swap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day2/main.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |         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]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 27 -         return true;
[INFO] [stdout] 27 +         true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual `!RangeInclusive::contains` implementation
[INFO] [stdout]   --> src/bin/day2/main.rs:23:16
[INFO] [stdout]    |
[INFO] [stdout] 23 |             if diff < 1 || diff > 3 {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^ help: use: `!(1..=3).contains(&diff)`
[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/bin/day12/main.rs:79:52
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn out_of_region(pos: Pos, region: char, grid: &Vec<char>, bounds: (i32, i32)) -> 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] 79 -     fn out_of_region(pos: Pos, region: char, grid: &Vec<char>, bounds: (i32, i32)) -> bool {
[INFO] [stdout] 79 +     fn out_of_region(pos: Pos, region: char, grid: &[char], bounds: (i32, i32)) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/day12/main.rs:94:16
[INFO] [stdout]    |
[INFO] [stdout] 94 |               if !(out_of_region(pos.left(dir), region, grid, bounds)
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 95 | |                 && !out_of_region(pos.move_back(dir).left(dir), region, grid, bounds))
[INFO] [stdout]    | |______________________________________________________________________________________^ help: try: `!out_of_region(pos.left(dir), region, grid, bounds) || out_of_region(pos.move_back(dir).left(dir), region, grid, bounds)`
[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: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/bin/day12/main.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 &grid,
[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]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/bin/day12/main.rs:174:17
[INFO] [stdout]     |
[INFO] [stdout] 174 |                 &grid,
[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: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day4/main.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         return v1 == 'M' && v2 == 'S' || v1 == 'S' && v2 == 'M';
[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] 55 -         return v1 == 'M' && v2 == 'S' || v1 == 'S' && v2 == 'M';
[INFO] [stdout] 55 +         v1 == 'M' && v2 == 'S' || v1 == 'S' && v2 == 'M'
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/bin/day7/main.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |         if rest.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rest.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: length comparison to zero
[INFO] [stdout]   --> src/bin/day7/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |         if rest.len() == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rest.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: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day4/main.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |         return v1 == 'M' && v2 == 'S' || v1 == 'S' && v2 == 'M';
[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] 55 -         return v1 == 'M' && v2 == 'S' || v1 == 'S' && v2 == 'M';
[INFO] [stdout] 55 +         v1 == 'M' && v2 == 'S' || v1 == 'S' && v2 == 'M'
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison to empty slice
[INFO] [stdout]   --> src/bin/day5/main.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |         if line == "" {
[INFO] [stdout]    |            ^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#comparison_to_empty
[INFO] [stdout]    = note: `#[warn(clippy::comparison_to_empty)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of `or_insert` to construct default value
[INFO] [stdout]   --> src/bin/day5/main.rs:29:42
[INFO] [stdout]    |
[INFO] [stdout] 29 |             let curr = orders.entry(min).or_insert(Vec::new());
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^ help: try: `or_default()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unwrap_or_default
[INFO] [stdout]    = note: `#[warn(clippy::unwrap_or_default)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant closure
[INFO] [stdout]   --> src/bin/day11/main.rs:13:14
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .map(|s| String::from(s))
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^ help: replace the closure with the associated function itself: `String::from`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stdout]    = note: `#[warn(clippy::redundant_closure)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/bin/day11/main.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |             _ if value.len() % 2 == 0 => {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^ help: replace with: `value.len().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: importing legacy numeric constants
[INFO] [stdout]  --> src/bin/day9/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     isize,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: remove this import
[INFO] [stdout]   = note: then `isize::<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: unneeded `return` statement
[INFO] [stdout]   --> src/bin/day9/main.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     return sum;
[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] 45 -     return sum;
[INFO] [stdout] 45 +     sum
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is used to index `values`
[INFO] [stdout]   --> src/bin/day9/main.rs:39:14
[INFO] [stdout]    |
[INFO] [stdout] 39 |     for i in 0..values.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] 39 -     for i in 0..values.len() {
[INFO] [stdout] 39 +     for (i, <item>) in values.iter().enumerate() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `free`
[INFO] [stdout]    --> src/bin/day9/main.rs:108:18
[INFO] [stdout]     |
[INFO] [stdout] 108 |         for i in 0..free.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] 108 -         for i in 0..free.len() {
[INFO] [stdout] 108 +         for <item> in &mut free {
[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/bin/day12/main.rs:79:52
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn out_of_region(pos: Pos, region: char, grid: &Vec<char>, bounds: (i32, i32)) -> 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] 79 -     fn out_of_region(pos: Pos, region: char, grid: &Vec<char>, bounds: (i32, i32)) -> bool {
[INFO] [stdout] 79 +     fn out_of_region(pos: Pos, region: char, grid: &[char], bounds: (i32, i32)) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/bin/day12/main.rs:94:16
[INFO] [stdout]    |
[INFO] [stdout] 94 |               if !(out_of_region(pos.left(dir), region, grid, bounds)
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 95 | |                 && !out_of_region(pos.move_back(dir).left(dir), region, grid, bounds))
[INFO] [stdout]    | |______________________________________________________________________________________^ help: try: `!out_of_region(pos.left(dir), region, grid, bounds) || out_of_region(pos.move_back(dir).left(dir), region, grid, bounds)`
[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: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/bin/day12/main.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |                 &grid,
[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]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/bin/day12/main.rs:174:17
[INFO] [stdout]     |
[INFO] [stdout] 174 |                 &grid,
[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 integer literal to `usize` is unnecessary
[INFO] [stdout]   --> src/bin/day10/main.rs:17:25
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let mut grid = vec![0 as usize; (nrows * ncols) as usize];
[INFO] [stdout]    |                         ^^^^^^^^^^ help: try: `0_usize`
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.16s
[INFO] [stdout] warning: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]   --> src/bin/day10/main.rs:39:25
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let next = (pos.0 as i32 + offset.0, pos.1 as i32 + offset.1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: try: `pos.0`
[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: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]   --> src/bin/day10/main.rs:39:50
[INFO] [stdout]    |
[INFO] [stdout] 39 |             let next = (pos.0 as i32 + offset.0, pos.1 as i32 + offset.1);
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^ help: try: `pos.1`
[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: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]   --> src/bin/day10/main.rs:61:25
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let next = (pos.0 as i32 + offset.0, pos.1 as i32 + offset.1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: try: `pos.0`
[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: casting to the same type is unnecessary (`i32` -> `i32`)
[INFO] [stdout]   --> src/bin/day10/main.rs:61:50
[INFO] [stdout]    |
[INFO] [stdout] 61 |             let next = (pos.0 as i32 + offset.0, pos.1 as i32 + offset.1);
[INFO] [stdout]    |                                                  ^^^^^^^^^^^^ help: try: `pos.1`
[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] running `Command { std: "docker" "inspect" "707b69597b3ab3bf6f906a3b7a2f24f2bdbee5255c88f8cb368c385252438427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "707b69597b3ab3bf6f906a3b7a2f24f2bdbee5255c88f8cb368c385252438427", kill_on_drop: false }`
[INFO] [stdout] 707b69597b3ab3bf6f906a3b7a2f24f2bdbee5255c88f8cb368c385252438427