[INFO] cloning repository https://github.com/NeoScripter/AOC_2018_Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NeoScripter/AOC_2018_Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNeoScripter%2FAOC_2018_Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNeoScripter%2FAOC_2018_Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 76856c5bbc8e51f2e6dc6fc161b609ff2c9ab83b
[INFO] linting NeoScripter/AOC_2018_Rust against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNeoScripter%2FAOC_2018_Rust" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/NeoScripter/AOC_2018_Rust
[INFO] finished tweaking git repo https://github.com/NeoScripter/AOC_2018_Rust
[INFO] tweaked toml for git repo https://github.com/NeoScripter/AOC_2018_Rust written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/NeoScripter/AOC_2018_Rust 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/NeoScripter/AOC_2018_Rust 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded id_tree v1.8.0
[INFO] [stderr]   Downloaded test-case v3.2.1
[INFO] [stderr]   Downloaded test-case-macros v3.2.1
[INFO] [stderr]   Downloaded test-case-core v3.2.1
[INFO] [stderr]   Downloaded snowflake v1.3.0
[INFO] [stderr]   Downloaded sharded-slab v0.1.6
[INFO] [stderr]   Downloaded color-spantrace v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 715b559ad91e3c917664b7b707250a17407db377f665dad565f4cf1176b1d9de
[INFO] running `Command { std: "docker" "start" "-a" "715b559ad91e3c917664b7b707250a17407db377f665dad565f4cf1176b1d9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "715b559ad91e3c917664b7b707250a17407db377f665dad565f4cf1176b1d9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "715b559ad91e3c917664b7b707250a17407db377f665dad565f4cf1176b1d9de", kill_on_drop: false }`
[INFO] [stdout] 715b559ad91e3c917664b7b707250a17407db377f665dad565f4cf1176b1d9de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 0f70dc232ff4f32b77de22e155e2f00db10f965a0cbd72e123c3d5bb71bae647
[INFO] running `Command { std: "docker" "start" "-a" "0f70dc232ff4f32b77de22e155e2f00db10f965a0cbd72e123c3d5bb71bae647", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking sharded-slab v0.1.6
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]    Compiling camino v1.1.6
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]     Checking hashbrown v0.14.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking id_tree v1.8.0
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking combine v4.6.6
[INFO] [stderr]     Checking indexmap v2.0.2
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]    Compiling test-case-core v3.2.1
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]    Compiling test-case-macros v3.2.1
[INFO] [stderr]     Checking test-case v3.2.1
[INFO] [stderr]     Checking color-eyre v0.6.2
[INFO] [stderr]     Checking aoc2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this is an `else {..}` but the formatting might hide it
[INFO] [stdout]    --> src/lib.rs:122:14
[INFO] [stdout]     |
[INFO] [stdout] 122 |               } else 
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 123 | |             { pq.push_back((y + 1, x)); }
[INFO] [stdout]     | |____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: to remove this lint, remove the `else` or remove the new line between `else` and `{..}`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_else_formatting
[INFO] [stdout]     = note: `#[warn(clippy::suspicious_else_formatting)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> src/lib.rs:63:29
[INFO] [stdout]    |
[INFO] [stdout] 63 |             let mut right = nx.clone();
[INFO] [stdout]    |                             ^^^^^^^^^^ help: try removing the `clone` call: `nx`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> src/lib.rs:74:28
[INFO] [stdout]    |
[INFO] [stdout] 74 |             let mut left = nx.clone();
[INFO] [stdout]    |                            ^^^^^^^^^^ help: try removing the `clone` call: `nx`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]    --> src/lib.rs:125:69
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let ovrl: HashSet<(usize, usize)> = cache.into_iter().chain(mem.into_iter()).collect();
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]    --> /rustc/3645249d79dfb136b5d8de3ce153d19d6698d92d/library/core/src/iter/traits/iterator.rs:510:11
[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] help: consider removing the `.into_iter()`
[INFO] [stdout]     |
[INFO] [stdout] 125 -         let ovrl: HashSet<(usize, usize)> = cache.into_iter().chain(mem.into_iter()).collect();
[INFO] [stdout] 125 +         let ovrl: HashSet<(usize, usize)> = cache.into_iter().chain(mem).collect();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this is an `else {..}` but the formatting might hide it
[INFO] [stdout]    --> src/lib.rs:122:14
[INFO] [stdout]     |
[INFO] [stdout] 122 |               } else 
[INFO] [stdout]     |  ______________^
[INFO] [stdout] 123 | |             { pq.push_back((y + 1, x)); }
[INFO] [stdout]     | |____________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: to remove this lint, remove the `else` or remove the new line between `else` and `{..}`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_else_formatting
[INFO] [stdout]     = note: `#[warn(clippy::suspicious_else_formatting)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> src/lib.rs:63:29
[INFO] [stdout]    |
[INFO] [stdout] 63 |             let mut right = nx.clone();
[INFO] [stdout]    |                             ^^^^^^^^^^ help: try removing the `clone` call: `nx`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> src/lib.rs:74:28
[INFO] [stdout]    |
[INFO] [stdout] 74 |             let mut left = nx.clone();
[INFO] [stdout]    |                            ^^^^^^^^^^ help: try removing the `clone` call: `nx`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]    --> src/lib.rs:125:69
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let ovrl: HashSet<(usize, usize)> = cache.into_iter().chain(mem.into_iter()).collect();
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]    --> /rustc/3645249d79dfb136b5d8de3ce153d19d6698d92d/library/core/src/iter/traits/iterator.rs:510:11
[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] help: consider removing the `.into_iter()`
[INFO] [stdout]     |
[INFO] [stdout] 125 -         let ovrl: HashSet<(usize, usize)> = cache.into_iter().chain(mem.into_iter()).collect();
[INFO] [stdout] 125 +         let ovrl: HashSet<(usize, usize)> = cache.into_iter().chain(mem).collect();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> bin/day16/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_first_cart` is never used
[INFO] [stdout]   --> bin/day13/main.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Tracks {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn find_first_cart(&mut self) -> Option<(usize, usize)> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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]   --> bin/day13/main.rs:79:58
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn check_collisions(&self, cart: &Cart, moved_carts: &Vec<Cart>) -> 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 check_collisions(&self, cart: &Cart, moved_carts: &Vec<Cart>) -> bool {
[INFO] [stdout] 79 +     fn check_collisions(&self, cart: &Cart, moved_carts: &[Cart]) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> bin/day13/main.rs:120:5
[INFO] [stdout]     |
[INFO] [stdout] 120 | /     match c {
[INFO] [stdout] 121 | |         '>'|'v'|'^'|'<' => true,
[INFO] [stdout] 122 | |         _ => false,
[INFO] [stdout] 123 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]     = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 120 -     match c {
[INFO] [stdout] 121 -         '>'|'v'|'^'|'<' => true,
[INFO] [stdout] 122 -         _ => false,
[INFO] [stdout] 123 -     }
[INFO] [stdout] 120 +     matches!(c, '>'|'v'|'^'|'<')
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> bin/day13/main.rs:147:11
[INFO] [stdout]     |
[INFO] [stdout] 147 |     while !crash.is_some() {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^ help: try: `crash.is_none()`
[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: methods `print_hp`, `increase_hit`, and `elves_survived` are never used
[INFO] [stdout]    --> bin/day15/main.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout]  39 | impl Battle {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 118 |     fn print_hp(&self) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn increase_hit(&mut self, new_hit: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     fn elves_survived(&self) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]    --> bin/day15/main.rs:158:4
[INFO] [stdout]     |
[INFO] [stdout] 158 | fn part2(input: &str) -> i32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]    --> bin/day15/main.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let battle = Battle { fld , units, rnds: 0 };
[INFO] [stdout]     |     --------------------------------------------- unnecessary `let` binding
[INFO] [stdout] 147 |     battle
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]     = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]     |
[INFO] [stdout] 146 ~     
[INFO] [stdout] 147 ~     Battle { fld , units, rnds: 0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> bin/day16/main.rs:103:18
[INFO] [stdout]     |
[INFO] [stdout] 103 |             _ => !unreachable!(),
[INFO] [stdout]     |                  ^--------------
[INFO] [stdout]     |                  ||
[INFO] [stdout]     |                  |any code following this expression is unreachable
[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: redundant field names in struct initialization
[INFO] [stdout]   --> bin/day12/main.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             row: row,
[INFO] [stdout]    |             ^^^^^^^^ help: replace it with: `row`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sum_entries` is never used
[INFO] [stdout]   --> bin/day8/main.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn sum_entries(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]    --> bin/day8/main.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn part1(input: &str) -> u32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrettyVec` is never constructed
[INFO] [stdout]   --> bin/day4/main.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct PrettyVec(Vec<Guard>);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `writeln!`
[INFO] [stdout]   --> bin/day4/main.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             writeln!(f, "")?;
[INFO] [stdout]    |             ^^^^^^^^^^----^
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#writeln_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::writeln_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> bin/day4/main.rs:65:20
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn sort_lines(vec: &mut Vec<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] 65 - fn sort_lines(vec: &mut Vec<String>) {
[INFO] [stdout] 65 + fn sort_lines(vec: &mut [String]) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]   --> bin/day4/main.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         let mod_line = String::from(&mod_line[2..]);
[INFO] [stdout]    |         -------------------------------------------- unnecessary `let` binding
[INFO] [stdout] 84 |         mod_line
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]    = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]    |
[INFO] [stdout] 83 ~         
[INFO] [stdout] 84 ~         String::from(&mod_line[2..])
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]    --> bin/day4/main.rs:136:21
[INFO] [stdout]     |
[INFO] [stdout] 136 |         .interleave(guard.time_asleep.clone().into_iter())
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/itertools-0.11.0/src/lib.rs:449:18
[INFO] [stdout]     |
[INFO] [stdout] 449 |         where J: IntoIterator<Item = Self::Item>,
[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] help: consider removing the `.into_iter()`
[INFO] [stdout]     |
[INFO] [stdout] 136 -         .interleave(guard.time_asleep.clone().into_iter())
[INFO] [stdout] 136 +         .interleave(guard.time_asleep.clone())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `idx` is used to index `vec`
[INFO] [stdout]    --> bin/day4/main.rs:145:20
[INFO] [stdout]     |
[INFO] [stdout] 145 |         for idx in 0..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] 145 -         for idx in 0..len {
[INFO] [stdout] 145 +         for (idx, <item>) in vec.iter().enumerate().take(len) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: iterating on a map's values
[INFO] [stdout]    --> bin/day4/main.rs:165:37
[INFO] [stdout]     |
[INFO] [stdout] 165 |     let unique_guards: Vec<Guard> = guard_map.into_iter().map(|(_, v)| v).collect();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `guard_map.into_values()`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> bin/day12/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn part1() -> i64 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `for` loop
[INFO] [stdout]   --> bin/day16/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         while let Some(l) = iter.next() {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for l in iter`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout]    = note: `#[warn(clippy::while_let_on_iterator)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashSet` and `VecDeque`
[INFO] [stdout]  --> bin/day17/main.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 |     collections::{VecDeque, HashSet},
[INFO] [stdout]   |                   ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: compiling a regex in a loop
[INFO] [stdout]   --> bin/day3/main.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let re = Regex::new(r"#(\d+) @ (\d+),(\d+): (\d+)x(\d+)").unwrap();
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: move the regex construction outside this loop
[INFO] [stdout]   --> bin/day3/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     for line in input.lines() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#regex_creation_in_loops
[INFO] [stdout]    = note: `#[warn(clippy::regex_creation_in_loops)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `HashSet`
[INFO] [stdout]    --> bin/day16/main.rs:125:57
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 if v.len() == 1 { self.ctgs.insert(k, v.into_iter().next().unwrap());}
[INFO] [stdout]     |                                                         ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]     = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> bin/day12/main.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             row: row,
[INFO] [stdout]    |             ^^^^^^^^ help: replace it with: `row`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> bin/day12/main.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn part1() -> i64 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> bin/day7/main.rs:30:33
[INFO] [stdout]    |
[INFO] [stdout] 30 |                     unav.remove(&v);
[INFO] [stdout]    |                                 ^^ help: change this to: `v`
[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: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> bin/day7/main.rs:92:24
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn apply_tick(workers: &mut Vec<Status>) -> Vec<Step> {
[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] 92 - fn apply_tick(workers: &mut Vec<Status>) -> Vec<Step> {
[INFO] [stdout] 92 + fn apply_tick(workers: &mut [Status]) -> Vec<Step> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `index` is only used to index `workers`
[INFO] [stdout]   --> bin/day7/main.rs:95:18
[INFO] [stdout]    |
[INFO] [stdout] 95 |     for index in 0..workers.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
[INFO] [stdout]    |
[INFO] [stdout] 95 -     for index in 0..workers.len() {
[INFO] [stdout] 95 +     for <item> in &mut workers {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> bin/day7/main.rs:110:30
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn all_workers_idle(workers: &Vec<Status>) -> bool {
[INFO] [stdout]     |                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 110 - fn all_workers_idle(workers: &Vec<Status>) -> bool {
[INFO] [stdout] 110 + fn all_workers_idle(workers: &[Status]) -> bool {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> bin/day7/main.rs:113:31
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn available_workers(workers: &Vec<Status>) -> Vec<usize> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 113 - fn available_workers(workers: &Vec<Status>) -> Vec<usize> {
[INFO] [stdout] 113 + fn available_workers(workers: &[Status]) -> Vec<usize> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `index` is used to index `workers`
[INFO] [stdout]    --> bin/day7/main.rs:116:18
[INFO] [stdout]     |
[INFO] [stdout] 116 |     for index in 0..workers.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] 116 -     for index in 0..workers.len() {
[INFO] [stdout] 116 +     for (index, <item>) in workers.iter().enumerate() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> bin/day17/main.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |                     println!("");
[INFO] [stdout]    |                     ^^^^^^^^^--^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::println_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> bin/day17/main.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |                 println!("");
[INFO] [stdout]    |                 ^^^^^^^^^--^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> bin/day17/main.rs:67:29
[INFO] [stdout]    |
[INFO] [stdout] 67 |             let mut right = nx.clone();
[INFO] [stdout]    |                             ^^^^^^^^^^ help: try removing the `clone` call: `nx`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> bin/day17/main.rs:77:28
[INFO] [stdout]    |
[INFO] [stdout] 77 |             let mut left = nx.clone();
[INFO] [stdout]    |                            ^^^^^^^^^^ help: try removing the `clone` call: `nx`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> bin/day7/main.rs:30:33
[INFO] [stdout]    |
[INFO] [stdout] 30 |                     unav.remove(&v);
[INFO] [stdout]    |                                 ^^ help: change this to: `v`
[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: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> bin/day7/main.rs:92:24
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn apply_tick(workers: &mut Vec<Status>) -> Vec<Step> {
[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] 92 - fn apply_tick(workers: &mut Vec<Status>) -> Vec<Step> {
[INFO] [stdout] 92 + fn apply_tick(workers: &mut [Status]) -> Vec<Step> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `index` is only used to index `workers`
[INFO] [stdout]   --> bin/day7/main.rs:95:18
[INFO] [stdout]    |
[INFO] [stdout] 95 |     for index in 0..workers.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
[INFO] [stdout]    |
[INFO] [stdout] 95 -     for index in 0..workers.len() {
[INFO] [stdout] 95 +     for <item> in &mut workers {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> bin/day7/main.rs:110:30
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn all_workers_idle(workers: &Vec<Status>) -> bool {
[INFO] [stdout]     |                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 110 - fn all_workers_idle(workers: &Vec<Status>) -> bool {
[INFO] [stdout] 110 + fn all_workers_idle(workers: &[Status]) -> bool {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]    --> bin/day7/main.rs:113:31
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn available_workers(workers: &Vec<Status>) -> Vec<usize> {
[INFO] [stdout]     |                               ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]     |
[INFO] [stdout] 113 - fn available_workers(workers: &Vec<Status>) -> Vec<usize> {
[INFO] [stdout] 113 + fn available_workers(workers: &[Status]) -> Vec<usize> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `index` is used to index `workers`
[INFO] [stdout]    --> bin/day7/main.rs:116:18
[INFO] [stdout]     |
[INFO] [stdout] 116 |     for index in 0..workers.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] 116 -     for index in 0..workers.len() {
[INFO] [stdout] 116 +     for (index, <item>) in workers.iter().enumerate() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> bin/day18/main.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `>= y + 1` or `x - 1 >=`
[INFO] [stdout]   --> bin/day18/main.rs:17:55
[INFO] [stdout]    |
[INFO] [stdout] 17 |         if !clay.contains(&(point.0, point.1 + 1)) && point.1 + 1 <= max_y {
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^ help: change it to: `point.1 < max_y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#int_plus_one
[INFO] [stdout]    = note: `#[warn(clippy::int_plus_one)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_score` is never used
[INFO] [stdout]   --> bin/day14/main.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Recipes {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn find_score(&self, rps: usize) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> bin/day14/main.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn part1(rps: &str) -> u64 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> bin/day14/main.rs:20:51
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for i in self.elfs.iter_mut() {*i = (*i + self.board[*i] as usize + 1) % self.board.len()}
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.board[*i]`
[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: method `find_square_part1` is never used
[INFO] [stdout]   --> bin/day11/main.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Grid {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn find_square_part1(&self) -> (usize, usize, i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> bin/day16/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: compiling a regex in a loop
[INFO] [stdout]   --> bin/day3/main.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let re = Regex::new(r"#(\d+) @ (\d+),(\d+): (\d+)x(\d+)").unwrap();
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: move the regex construction outside this loop
[INFO] [stdout]   --> bin/day3/main.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     for line in input.lines() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#regex_creation_in_loops
[INFO] [stdout]    = note: `#[warn(clippy::regex_creation_in_loops)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> bin/day16/main.rs:103:18
[INFO] [stdout]     |
[INFO] [stdout] 103 |             _ => !unreachable!(),
[INFO] [stdout]     |                  ^--------------
[INFO] [stdout]     |                  ||
[INFO] [stdout]     |                  |any code following this expression is unreachable
[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: this loop could be written as a `for` loop
[INFO] [stdout]   --> bin/day16/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         while let Some(l) = iter.next() {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `for l in iter`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_on_iterator
[INFO] [stdout]    = note: `#[warn(clippy::while_let_on_iterator)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `.into_iter()` call is equivalent to `.iter()` and will not consume the `HashSet`
[INFO] [stdout]    --> bin/day16/main.rs:125:57
[INFO] [stdout]     |
[INFO] [stdout] 125 |                 if v.len() == 1 { self.ctgs.insert(k, v.into_iter().next().unwrap());}
[INFO] [stdout]     |                                                         ^^^^^^^^^ help: call directly: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#into_iter_on_ref
[INFO] [stdout]     = note: `#[warn(clippy::into_iter_on_ref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashMap`
[INFO] [stdout]  --> bin/day18/main.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, HashSet, VecDeque};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `>= y + 1` or `x - 1 >=`
[INFO] [stdout]   --> bin/day18/main.rs:17:55
[INFO] [stdout]    |
[INFO] [stdout] 17 |         if !clay.contains(&(point.0, point.1 + 1)) && point.1 + 1 <= max_y {
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^^^ help: change it to: `point.1 < max_y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#int_plus_one
[INFO] [stdout]    = note: `#[warn(clippy::int_plus_one)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_first_cart` is never used
[INFO] [stdout]   --> bin/day13/main.rs:82:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | impl Tracks {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn find_first_cart(&mut self) -> Option<(usize, usize)> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `print_hp`, `increase_hit`, and `elves_survived` are never used
[INFO] [stdout]    --> bin/day15/main.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout]  39 | impl Battle {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 118 |     fn print_hp(&self) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 129 |     fn increase_hit(&mut self, new_hit: i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     fn elves_survived(&self) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]    --> bin/day15/main.rs:158:4
[INFO] [stdout]     |
[INFO] [stdout] 158 | fn part2(input: &str) -> i32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]    --> bin/day15/main.rs:147:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let battle = Battle { fld , units, rnds: 0 };
[INFO] [stdout]     |     --------------------------------------------- unnecessary `let` binding
[INFO] [stdout] 147 |     battle
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]     = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]     |
[INFO] [stdout] 146 ~     
[INFO] [stdout] 147 ~     Battle { fld , units, rnds: 0 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_score` is never used
[INFO] [stdout]   --> bin/day14/main.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Recipes {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     fn find_score(&self, rps: usize) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> bin/day14/main.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn part1(rps: &str) -> u64 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PrettyVec` is never constructed
[INFO] [stdout]   --> bin/day4/main.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct PrettyVec(Vec<Guard>);
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) 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]   --> bin/day13/main.rs:79:58
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn check_collisions(&self, cart: &Cart, moved_carts: &Vec<Cart>) -> 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 check_collisions(&self, cart: &Cart, moved_carts: &Vec<Cart>) -> bool {
[INFO] [stdout] 79 +     fn check_collisions(&self, cart: &Cart, moved_carts: &[Cart]) -> bool {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `writeln!`
[INFO] [stdout]   --> bin/day4/main.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |             writeln!(f, "")?;
[INFO] [stdout]    |             ^^^^^^^^^^----^
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#writeln_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::writeln_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> bin/day14/main.rs:20:51
[INFO] [stdout]    |
[INFO] [stdout] 20 |         for i in self.elfs.iter_mut() {*i = (*i + self.board[*i] as usize + 1) % self.board.len()}
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.board[*i]`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&mut Vec` instead of `&mut [_]` involves a new object where a slice will do
[INFO] [stdout]   --> bin/day4/main.rs:65:20
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn sort_lines(vec: &mut Vec<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] 65 - fn sort_lines(vec: &mut Vec<String>) {
[INFO] [stdout] 65 + fn sort_lines(vec: &mut [String]) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: returning the result of a `let` binding from a block
[INFO] [stdout]   --> bin/day4/main.rs:84:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         let mod_line = String::from(&mod_line[2..]);
[INFO] [stdout]    |         -------------------------------------------- unnecessary `let` binding
[INFO] [stdout] 84 |         mod_line
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stdout]    = note: `#[warn(clippy::let_and_return)]` on by default
[INFO] [stdout] help: return the expression directly
[INFO] [stdout]    |
[INFO] [stdout] 83 ~         
[INFO] [stdout] 84 ~         String::from(&mod_line[2..])
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> bin/day13/main.rs:120:5
[INFO] [stdout]     |
[INFO] [stdout] 120 | /     match c {
[INFO] [stdout] 121 | |         '>'|'v'|'^'|'<' => true,
[INFO] [stdout] 122 | |         _ => false,
[INFO] [stdout] 123 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]     = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 120 -     match c {
[INFO] [stdout] 121 -         '>'|'v'|'^'|'<' => true,
[INFO] [stdout] 122 -         _ => false,
[INFO] [stdout] 123 -     }
[INFO] [stdout] 120 +     matches!(c, '>'|'v'|'^'|'<')
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> bin/day13/main.rs:147:11
[INFO] [stdout]     |
[INFO] [stdout] 147 |     while !crash.is_some() {
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^ help: try: `crash.is_none()`
[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: explicit call to `.into_iter()` in function argument accepting `IntoIterator`
[INFO] [stdout]    --> bin/day4/main.rs:136:21
[INFO] [stdout]     |
[INFO] [stdout] 136 |         .interleave(guard.time_asleep.clone().into_iter())
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: this parameter accepts any `IntoIterator`, so you don't need to call `.into_iter()`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/itertools-0.11.0/src/lib.rs:449:18
[INFO] [stdout]     |
[INFO] [stdout] 449 |         where J: IntoIterator<Item = Self::Item>,
[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] help: consider removing the `.into_iter()`
[INFO] [stdout]     |
[INFO] [stdout] 136 -         .interleave(guard.time_asleep.clone().into_iter())
[INFO] [stdout] 136 +         .interleave(guard.time_asleep.clone())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `idx` is used to index `vec`
[INFO] [stdout]    --> bin/day4/main.rs:145:20
[INFO] [stdout]     |
[INFO] [stdout] 145 |         for idx in 0..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] 145 -         for idx in 0..len {
[INFO] [stdout] 145 +         for (idx, <item>) in vec.iter().enumerate().take(len) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> bin/day6/main.rs:41:51
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 if self.finite_locations.contains(&location) {
[INFO] [stdout]    |                                                   ^^^^^^^^^ help: change this to: `location`
[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: iterating on a map's values
[INFO] [stdout]    --> bin/day4/main.rs:165:37
[INFO] [stdout]     |
[INFO] [stdout] 165 |     let unique_guards: Vec<Guard> = guard_map.into_iter().map(|(_, v)| v).collect();
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `guard_map.into_values()`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> bin/day2/main.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn part1(input: &str) -> u32 {
[INFO] [stdout]   |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> bin/day2/main.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn part2(input: &str) -> String {
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]  --> bin/day2/main.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn part1(input: &str) -> u32 {
[INFO] [stdout]   |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]   --> bin/day2/main.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | fn part2(input: &str) -> String {
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sum_entries` is never used
[INFO] [stdout]   --> bin/day8/main.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn sum_entries(&self) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]    --> bin/day8/main.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn part1(input: &str) -> u32 {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashSet` and `VecDeque`
[INFO] [stdout]  --> bin/day17/main.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 |     collections::{VecDeque, HashSet},
[INFO] [stdout]   |                   ^^^^^^^^  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> bin/day5/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         return result;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 16 -         return result;
[INFO] [stdout] 16 +         result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> bin/day6/main.rs:41:51
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 if self.finite_locations.contains(&location) {
[INFO] [stdout]    |                                                   ^^^^^^^^^ help: change this to: `location`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> bin/day5/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         return form(result);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 18 -         return form(result);
[INFO] [stdout] 18 +         form(result)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> bin/day17/main.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |                     println!("");
[INFO] [stdout]    |                     ^^^^^^^^^--^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stdout]    = note: `#[warn(clippy::println_empty_string)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: empty string literal in `println!`
[INFO] [stdout]   --> bin/day17/main.rs:64:17
[INFO] [stdout]    |
[INFO] [stdout] 64 |                 println!("");
[INFO] [stdout]    |                 ^^^^^^^^^--^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          help: remove the empty string
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> bin/day17/main.rs:67:29
[INFO] [stdout]    |
[INFO] [stdout] 67 |             let mut right = nx.clone();
[INFO] [stdout]    |                             ^^^^^^^^^^ help: try removing the `clone` call: `nx`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout]    = note: `#[warn(clippy::clone_on_copy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `clone` on type `usize` which implements the `Copy` trait
[INFO] [stdout]   --> bin/day17/main.rs:77:28
[INFO] [stdout]    |
[INFO] [stdout] 77 |             let mut left = nx.clone();
[INFO] [stdout]    |                            ^^^^^^^^^^ help: try removing the `clone` call: `nx`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `find_square_part1` is never used
[INFO] [stdout]   --> bin/day11/main.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Grid {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn find_square_part1(&self) -> (usize, usize, i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> bin/day5/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         return result;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 16 -         return result;
[INFO] [stdout] 16 +         result
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> bin/day5/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         return form(result);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 18 -         return form(result);
[INFO] [stdout] 18 +         form(result)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.25s
[INFO] running `Command { std: "docker" "inspect" "0f70dc232ff4f32b77de22e155e2f00db10f965a0cbd72e123c3d5bb71bae647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f70dc232ff4f32b77de22e155e2f00db10f965a0cbd72e123c3d5bb71bae647", kill_on_drop: false }`
[INFO] [stdout] 0f70dc232ff4f32b77de22e155e2f00db10f965a0cbd72e123c3d5bb71bae647