[INFO] updating cached repository efrees/adventofcode2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/efrees/adventofcode2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/efrees/adventofcode2018" "work/ex/clippy-test-run/sources/stable/gh/efrees/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/efrees/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/efrees/adventofcode2018" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/efrees/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/efrees/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 18bc514b8a54db85cbaaa39ec9c1d7b9020e5200
[INFO] sha for GitHub repo efrees/adventofcode2018: 18bc514b8a54db85cbaaa39ec9c1d7b9020e5200
[INFO] validating manifest of efrees/adventofcode2018 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of efrees/adventofcode2018 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing efrees/adventofcode2018
[INFO] finished frobbing efrees/adventofcode2018
[INFO] frobbed toml for efrees/adventofcode2018 written to work/ex/clippy-test-run/sources/stable/gh/efrees/adventofcode2018/Cargo.toml
[INFO] started frobbing efrees/adventofcode2018
[INFO] finished frobbing efrees/adventofcode2018
[INFO] frobbed toml for efrees/adventofcode2018 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/efrees/adventofcode2018/Cargo.toml
[INFO] crate efrees/adventofcode2018 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting efrees/adventofcode2018 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-1/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/efrees/adventofcode2018:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7badc85ff3244328073a1c8e88be6cd24634a1baba6b3803ef9e5e3d2cac467b
[INFO] running `"docker" "start" "-a" "7badc85ff3244328073a1c8e88be6cd24634a1baba6b3803ef9e5e3d2cac467b"`
[INFO] [stderr]     Checking advent_2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:38:21
[INFO] [stderr]    |
[INFO] [stderr] 38 |                     next_key: next_key,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^ help: replace it with: `next_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |             next_key: next_key,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `next_key`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |             prev_key: prev_key,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `prev_key`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]  --> src/adventlib/grid/mod.rs:9:17
[INFO] [stderr]   |
[INFO] [stderr] 9 |         Point { x: x, y: y }
[INFO] [stderr]   |                 ^^^^ help: replace it with: `x`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]  --> src/adventlib/grid/mod.rs:9:23
[INFO] [stderr]   |
[INFO] [stderr] 9 |         Point { x: x, y: y }
[INFO] [stderr]   |                       ^^^^ help: replace it with: `y`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:38:21
[INFO] [stderr]    |
[INFO] [stderr] 38 |                     next_key: next_key,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^ help: replace it with: `next_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |             next_key: next_key,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `next_key`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |             prev_key: prev_key,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `prev_key`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]  --> src/adventlib/grid/mod.rs:9:17
[INFO] [stderr]   |
[INFO] [stderr] 9 |         Point { x: x, y: y }
[INFO] [stderr]   |                 ^^^^ help: replace it with: `x`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]  --> src/adventlib/grid/mod.rs:9:23
[INFO] [stderr]   |
[INFO] [stderr] 9 |         Point { x: x, y: y }
[INFO] [stderr]   |                       ^^^^ help: replace it with: `y`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |         return rem_node.value;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `rem_node.value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 | /         return match self.nodes.get(cur_ptr.0) {
[INFO] [stderr] 91 | |             Some(node) => Some(node.value),
[INFO] [stderr] 92 | |             None => None,
[INFO] [stderr] 93 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 90 |         match self.nodes.get(cur_ptr.0) {
[INFO] [stderr] 91 |             Some(node) => Some(node.value),
[INFO] [stderr] 92 |             None => None,
[INFO] [stderr] 93 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     return string;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `string`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     return string.lines().map(|x| x.to_string()).collect();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `string.lines().map(|x| x.to_string()).collect()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     return string.split_whitespace().map(|x| x.to_string()).collect();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `string.split_whitespace().map(|x| x.to_string()).collect()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `collections::CircleList<T>`
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | /     pub fn new() -> CircleList<T> {
[INFO] [stderr] 21 | |         Self::with_capacity(0)
[INFO] [stderr] 22 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 5  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |         return rem_node.value;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `rem_node.value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:90:9
[INFO] [stderr]    |
[INFO] [stderr] 90 | /         return match self.nodes.get(cur_ptr.0) {
[INFO] [stderr] 91 | |             Some(node) => Some(node.value),
[INFO] [stderr] 92 | |             None => None,
[INFO] [stderr] 93 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 90 |         match self.nodes.get(cur_ptr.0) {
[INFO] [stderr] 91 |             Some(node) => Some(node.value),
[INFO] [stderr] 92 |             None => None,
[INFO] [stderr] 93 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     return string;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `string`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     return string.lines().map(|x| x.to_string()).collect();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `string.lines().map(|x| x.to_string()).collect()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/adventlib/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     return string.split_whitespace().map(|x| x.to_string()).collect();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `string.split_whitespace().map(|x| x.to_string()).collect()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/solutions/day4.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 |         time: time,
[INFO] [stderr]     |         ^^^^^^^^^^ help: replace it with: `time`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/solutions/day4.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 |         time: time,
[INFO] [stderr]     |         ^^^^^^^^^^ help: replace it with: `time`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: you should consider deriving a `Default` implementation for `collections::CircleList<T>`
[INFO] [stderr]   --> src/adventlib/collections/mod.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | /     pub fn new() -> CircleList<T> {
[INFO] [stderr] 21 | |         Self::with_capacity(0)
[INFO] [stderr] 22 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::new_without_default_derive)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default_derive
[INFO] [stderr] help: try this
[INFO] [stderr]    |
[INFO] [stderr] 5  | #[derive(Default)]
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:27:27
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut prev_min_x = -999999;
[INFO] [stderr]    |                           ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:28:27
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut prev_min_y = -999999;
[INFO] [stderr]    |                           ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:29:26
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut prev_max_x = 999999;
[INFO] [stderr]    |                          ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:30:26
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut prev_max_y = 999999;
[INFO] [stderr]    |                          ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut min_x = 999999;
[INFO] [stderr]    |                         ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:37:25
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let mut min_y = 999999;
[INFO] [stderr]    |                         ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:38:26
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let mut max_x = -999999;
[INFO] [stderr]    |                          ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:39:26
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut max_y = -999999;
[INFO] [stderr]    |                          ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day11.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     return power_level;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `power_level`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day12.rs:57:31
[INFO] [stderr]    |
[INFO] [stderr] 57 |             .map(|&&x| if x { return '#' } else { return '.' })
[INFO] [stderr]    |                               ^^^^^^^^^^ help: remove `return` as shown: `'#'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day12.rs:57:51
[INFO] [stderr]    |
[INFO] [stderr] 57 |             .map(|&&x| if x { return '#' } else { return '.' })
[INFO] [stderr]    |                                                   ^^^^^^^^^^ help: remove `return` as shown: `'.'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day12.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     return (left_side, right_side);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(left_side, right_side)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day13.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     return grid_rows;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `grid_rows`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day13.rs:109:5
[INFO] [stderr]     |
[INFO] [stderr] 109 |     return carts;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `carts`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day13.rs:170:9
[INFO] [stderr]     |
[INFO] [stderr] 170 | /         return match c_type {
[INFO] [stderr] 171 | |             '/' => self.turn_left(),
[INFO] [stderr] 172 | |             _ => self.turn_right(),
[INFO] [stderr] 173 | |         };
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 170 |         match c_type {
[INFO] [stderr] 171 |             '/' => self.turn_left(),
[INFO] [stderr] 172 |             _ => self.turn_right(),
[INFO] [stderr] 173 |         }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]  --> src/solutions/day14.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let input = 260321;
[INFO] [stderr]   |                 ^^^^^^ help: consider: `260_321`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day16.rs:125:5
[INFO] [stderr]     |
[INFO] [stderr] 125 |     return true;
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day16.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     return reg_equal(&temp_reg, &expected);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `reg_equal(&temp_reg, &expected)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: All variants have the same prefix: `Guard`
[INFO] [stderr]   --> src/solutions/day4.rs:6:1
[INFO] [stderr]    |
[INFO] [stderr] 6  | / enum GuardLogType {
[INFO] [stderr] 7  | |     GuardStart,
[INFO] [stderr] 8  | |     GuardSleep,
[INFO] [stderr] 9  | |     GuardWake,
[INFO] [stderr] 10 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: remove the prefixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day4.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 | /     return GuardLog {
[INFO] [stderr] 112 | |         time: time,
[INFO] [stderr] 113 | |         log_type: log_info.0,
[INFO] [stderr] 114 | |         guard: log_info.1,
[INFO] [stderr] 115 | |     };
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 111 |     GuardLog {
[INFO] [stderr] 112 |         time: time,
[INFO] [stderr] 113 |         log_type: log_info.0,
[INFO] [stderr] 114 |         guard: log_info.1,
[INFO] [stderr] 115 |     }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day4.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         return (GuardLogType::GuardStart, guard_id);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(GuardLogType::GuardStart, guard_id)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day4.rs:127:9
[INFO] [stderr]     |
[INFO] [stderr] 127 |         return (GuardLogType::GuardSleep, 0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(GuardLogType::GuardSleep, 0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day4.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |         return (GuardLogType::GuardWake, 0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(GuardLogType::GuardWake, 0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day5.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     return cur_string;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `cur_string`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day6.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 | /         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr] 24 | |             as u16;
[INFO] [stderr]    | |___________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 23 |         ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr] 24 |             as u16
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day6.rs:55:25
[INFO] [stderr]    |
[INFO] [stderr] 55 |                         return set;
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: remove `return` as shown: `set`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day6.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 | /     return FillPoint {
[INFO] [stderr] 108 | |         x: captures[1].parse().unwrap(),
[INFO] [stderr] 109 | |         y: captures[2].parse().unwrap(),
[INFO] [stderr] 110 | |         d: 0,
[INFO] [stderr] 111 | |         seed_id: index + 1, //save zero
[INFO] [stderr] 112 | |     };
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 107 |     FillPoint {
[INFO] [stderr] 108 |         x: captures[1].parse().unwrap(),
[INFO] [stderr] 109 |         y: captures[2].parse().unwrap(),
[INFO] [stderr] 110 |         d: 0,
[INFO] [stderr] 111 |         seed_id: index + 1, //save zero
[INFO] [stderr] 112 |     }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day7.rs:47:17
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 return set;
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: remove `return` as shown: `set`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day7.rs:133:5
[INFO] [stderr]     |
[INFO] [stderr] 133 |     return b[0] as u16 - alpha_offset + 60;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `b[0] as u16 - alpha_offset + 60`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day8.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     return total_metadata;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `total_metadata`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day8.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     return node_value;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `node_value`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:27:27
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut prev_min_x = -999999;
[INFO] [stderr]    |                           ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:28:27
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut prev_min_y = -999999;
[INFO] [stderr]    |                           ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:29:26
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut prev_max_x = 999999;
[INFO] [stderr]    |                          ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:30:26
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut prev_max_y = 999999;
[INFO] [stderr]    |                          ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:36:25
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut min_x = 999999;
[INFO] [stderr]    |                         ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:37:25
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let mut min_y = 999999;
[INFO] [stderr]    |                         ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:38:26
[INFO] [stderr]    |
[INFO] [stderr] 38 |         let mut max_x = -999999;
[INFO] [stderr]    |                          ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/solutions/day10.rs:39:26
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let mut max_y = -999999;
[INFO] [stderr]    |                          ^^^^^^ help: consider: `999_999`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day11.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     return power_level;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `power_level`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day12.rs:57:31
[INFO] [stderr]    |
[INFO] [stderr] 57 |             .map(|&&x| if x { return '#' } else { return '.' })
[INFO] [stderr]    |                               ^^^^^^^^^^ help: remove `return` as shown: `'#'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day12.rs:57:51
[INFO] [stderr]    |
[INFO] [stderr] 57 |             .map(|&&x| if x { return '#' } else { return '.' })
[INFO] [stderr]    |                                                   ^^^^^^^^^^ help: remove `return` as shown: `'.'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day12.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     return (left_side, right_side);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(left_side, right_side)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day13.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     return grid_rows;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `grid_rows`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day13.rs:109:5
[INFO] [stderr]     |
[INFO] [stderr] 109 |     return carts;
[INFO] [stderr]     |     ^^^^^^^^^^^^^ help: remove `return` as shown: `carts`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day13.rs:170:9
[INFO] [stderr]     |
[INFO] [stderr] 170 | /         return match c_type {
[INFO] [stderr] 171 | |             '/' => self.turn_left(),
[INFO] [stderr] 172 | |             _ => self.turn_right(),
[INFO] [stderr] 173 | |         };
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 170 |         match c_type {
[INFO] [stderr] 171 |             '/' => self.turn_left(),
[INFO] [stderr] 172 |             _ => self.turn_right(),
[INFO] [stderr] 173 |         }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]  --> src/solutions/day14.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let input = 260321;
[INFO] [stderr]   |                 ^^^^^^ help: consider: `260_321`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day16.rs:125:5
[INFO] [stderr]     |
[INFO] [stderr] 125 |     return true;
[INFO] [stderr]     |     ^^^^^^^^^^^^ help: remove `return` as shown: `true`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day16.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     return reg_equal(&temp_reg, &expected);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `reg_equal(&temp_reg, &expected)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: All variants have the same prefix: `Guard`
[INFO] [stderr]   --> src/solutions/day4.rs:6:1
[INFO] [stderr]    |
[INFO] [stderr] 6  | / enum GuardLogType {
[INFO] [stderr] 7  | |     GuardStart,
[INFO] [stderr] 8  | |     GuardSleep,
[INFO] [stderr] 9  | |     GuardWake,
[INFO] [stderr] 10 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::enum_variant_names)] on by default
[INFO] [stderr]    = help: remove the prefixes and use full paths to the variants instead of glob imports
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#enum_variant_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day4.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 | /     return GuardLog {
[INFO] [stderr] 112 | |         time: time,
[INFO] [stderr] 113 | |         log_type: log_info.0,
[INFO] [stderr] 114 | |         guard: log_info.1,
[INFO] [stderr] 115 | |     };
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 111 |     GuardLog {
[INFO] [stderr] 112 |         time: time,
[INFO] [stderr] 113 |         log_type: log_info.0,
[INFO] [stderr] 114 |         guard: log_info.1,
[INFO] [stderr] 115 |     }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day4.rs:125:9
[INFO] [stderr]     |
[INFO] [stderr] 125 |         return (GuardLogType::GuardStart, guard_id);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(GuardLogType::GuardStart, guard_id)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day4.rs:127:9
[INFO] [stderr]     |
[INFO] [stderr] 127 |         return (GuardLogType::GuardSleep, 0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(GuardLogType::GuardSleep, 0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day4.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |         return (GuardLogType::GuardWake, 0);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `(GuardLogType::GuardWake, 0)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day5.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     return cur_string;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `cur_string`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day6.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 | /         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr] 24 | |             as u16;
[INFO] [stderr]    | |___________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 23 |         ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr] 24 |             as u16
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day6.rs:55:25
[INFO] [stderr]    |
[INFO] [stderr] 55 |                         return set;
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: remove `return` as shown: `set`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day6.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 | /     return FillPoint {
[INFO] [stderr] 108 | |         x: captures[1].parse().unwrap(),
[INFO] [stderr] 109 | |         y: captures[2].parse().unwrap(),
[INFO] [stderr] 110 | |         d: 0,
[INFO] [stderr] 111 | |         seed_id: index + 1, //save zero
[INFO] [stderr] 112 | |     };
[INFO] [stderr]     | |______^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 107 |     FillPoint {
[INFO] [stderr] 108 |         x: captures[1].parse().unwrap(),
[INFO] [stderr] 109 |         y: captures[2].parse().unwrap(),
[INFO] [stderr] 110 |         d: 0,
[INFO] [stderr] 111 |         seed_id: index + 1, //save zero
[INFO] [stderr] 112 |     }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day7.rs:47:17
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 return set;
[INFO] [stderr]    |                 ^^^^^^^^^^^ help: remove `return` as shown: `set`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/solutions/day7.rs:133:5
[INFO] [stderr]     |
[INFO] [stderr] 133 |     return b[0] as u16 - alpha_offset + 60;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `b[0] as u16 - alpha_offset + 60`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day8.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     return total_metadata;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `total_metadata`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/solutions/day8.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     return node_value;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `node_value`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/solutions/day16.rs:63:32
[INFO] [stderr]    |
[INFO] [stderr] 63 |                     .filter(|&(i, set)| set.len() == 1)
[INFO] [stderr]    |                                ^ help: consider using `_i` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/solutions/day16.rs:63:32
[INFO] [stderr]    |
[INFO] [stderr] 63 |                     .filter(|&(i, set)| set.len() == 1)
[INFO] [stderr]    |                                ^ help: consider using `_i` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day1.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]  --> src/solutions/day10.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct Point(i32, i32);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointWithVelocity`
[INFO] [stderr]  --> src/solutions/day10.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct PointWithVelocity {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solutions/day10.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn solve() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_point_section`
[INFO] [stderr]    --> src/solutions/day10.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / fn print_point_section(
[INFO] [stderr] 78  | |     min_x: i32,
[INFO] [stderr] 79  | |     min_y: i32,
[INFO] [stderr] 80  | |     max_x: i32,
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |     }
[INFO] [stderr] 100 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day11.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `power_level`
[INFO] [stderr]   --> src/solutions/day11.rs:85:1
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn power_level(x: i32, y: i32, serial_number: i32) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_grid`
[INFO] [stderr]   --> src/solutions/day11.rs:95:1
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn print_grid(grid: &Vec<Vec<i32>>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day12.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_rule`
[INFO] [stderr]   --> src/solutions/day12.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn parse_rule(line: &String) -> ((bool, bool, bool, bool, bool), bool) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_result`
[INFO] [stderr]   --> src/solutions/day12.rs:96:1
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn print_result(next_config: &Vec<&bool>, zero_offset: i64, generation: i64) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day13.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_grid`
[INFO] [stderr]   --> src/solutions/day13.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn parse_grid(lines: &Vec<String>) -> Vec<Vec<RailType>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `initiate_carts`
[INFO] [stderr]   --> src/solutions/day13.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn initiate_carts(lines: &Vec<String>) -> Vec<Cart> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `move_cart_on_grid`
[INFO] [stderr]    --> src/solutions/day13.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | fn move_cart_on_grid(cart: &mut Cart, grid: &Vec<Vec<RailType>>) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Up`
[INFO] [stderr]    --> src/solutions/day13.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     Up,
[INFO] [stderr]     |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Down`
[INFO] [stderr]    --> src/solutions/day13.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 |     Down,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]    --> src/solutions/day13.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     Left,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]    --> src/solutions/day13.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     Right,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `as_vector`
[INFO] [stderr]    --> src/solutions/day13.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 |     fn as_vector(&self) -> Point {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_horizontal`
[INFO] [stderr]    --> src/solutions/day13.rs:155:5
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn is_horizontal(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_vertical`
[INFO] [stderr]    --> src/solutions/day13.rs:159:5
[INFO] [stderr]     |
[INFO] [stderr] 159 |     fn is_vertical(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_corner`
[INFO] [stderr]    --> src/solutions/day13.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn turn_corner(&self, c_type: char) -> Direction {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_left`
[INFO] [stderr]    --> src/solutions/day13.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn turn_left(&self) -> Direction {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_right`
[INFO] [stderr]    --> src/solutions/day13.rs:185:5
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn turn_right(&self) -> Direction {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Cart`
[INFO] [stderr]    --> src/solutions/day13.rs:196:1
[INFO] [stderr]     |
[INFO] [stderr] 196 | struct Cart {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `RailType`
[INFO] [stderr]    --> src/solutions/day13.rs:203:1
[INFO] [stderr]     |
[INFO] [stderr] 203 | enum RailType {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day14.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_recipes_to`
[INFO] [stderr]   --> src/solutions/day14.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | / fn build_recipes_to(
[INFO] [stderr] 41 | |     recipes: &mut Vec<u8>,
[INFO] [stderr] 42 | |     target_count: usize,
[INFO] [stderr] 43 | |     elf_positions: &mut (usize, usize),
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |     elf_positions.1 = second_elf;
[INFO] [stderr] 67 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day2.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day3.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `GuardStart`
[INFO] [stderr]  --> src/solutions/day4.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     GuardStart,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `GuardSleep`
[INFO] [stderr]  --> src/solutions/day4.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     GuardSleep,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `GuardWake`
[INFO] [stderr]  --> src/solutions/day4.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     GuardWake,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `GuardLog`
[INFO] [stderr]   --> src/solutions/day4.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct GuardLog {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solutions/day4.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn solve() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_log_from_line`
[INFO] [stderr]    --> src/solutions/day4.rs:102:1
[INFO] [stderr]     |
[INFO] [stderr] 102 | fn parse_log_from_line(line: &str) -> GuardLog {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_log_type_from_message`
[INFO] [stderr]    --> src/solutions/day4.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | fn parse_log_type_from_message(message: &str) -> (GuardLogType, u32) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day5.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `react_string`
[INFO] [stderr]   --> src/solutions/day5.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn react_string(line: Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dist_to`
[INFO] [stderr]   --> src/solutions/day6.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn dist_to(&self, other_x: u16, other_y: u16) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solutions/day6.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn solve() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_point`
[INFO] [stderr]    --> src/solutions/day6.rs:101:1
[INFO] [stderr]     |
[INFO] [stderr] 101 | fn parse_point(line: &str, index: u16) -> FillPoint {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day7.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `node_cost`
[INFO] [stderr]    --> src/solutions/day7.rs:128:1
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn node_cost(node: &char) -> u16 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day8.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_metadata_rec`
[INFO] [stderr]   --> src/solutions/day8.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn sum_metadata_rec(tree_data: &mut VecDeque<u32>) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_node_value`
[INFO] [stderr]   --> src/solutions/day8.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn get_node_value(tree_data: &mut VecDeque<u32>) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solutions/day9.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn solve() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/solutions/day1.rs:31:21
[INFO] [stderr]    |
[INFO] [stderr] 31 |         for diff in diffs.into_iter() {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `diffs`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day10.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |     points: &Vec<PointWithVelocity>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[PointWithVelocity]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `grid`
[INFO] [stderr]   --> src/solutions/day11.rs:12:14
[INFO] [stderr]    |
[INFO] [stderr] 12 |     for i in 0..300 {
[INFO] [stderr]    |              ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 12 |     for (i, <item>) in grid.iter_mut().enumerate().take(300) {
[INFO] [stderr]    |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day11.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn print_grid(grid: &Vec<Vec<i32>>) {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: change this to: `&[Vec<i32>]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `grid`.
[INFO] [stderr]   --> src/solutions/day11.rs:97:14
[INFO] [stderr]    |
[INFO] [stderr] 97 |     for i in 0..grid.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 97 |     for <item> in &grid {
[INFO] [stderr]    |         ^^^^^^    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/solutions/day12.rs:29:20
[INFO] [stderr]    |
[INFO] [stderr] 29 |             .chain(next_config.iter().map(|x| *x))
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `next_config.iter().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/solutions/day12.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 | /         if seen_patterns.contains_key(&state) {
[INFO] [stderr] 61 | |             let prev_occurrence = seen_patterns.get(&state).expect("Key should be valid");
[INFO] [stderr] 62 | |             let step_size = generation - prev_occurrence.0;
[INFO] [stderr] 63 | |             let step_offset = zero_offset - prev_occurrence.1;
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |             seen_patterns.insert(state, (generation, zero_offset));
[INFO] [stderr] 73 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `seen_patterns.entry(state)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/solutions/day12.rs:80:21
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn parse_rule(line: &String) -> ((bool, bool, bool, bool, bool), bool) {
[INFO] [stderr]    |                     ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day12.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn print_result(next_config: &Vec<&bool>, zero_offset: i64, generation: i64) {
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: change this to: `&[&bool]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day13.rs:50:22
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn parse_grid(lines: &Vec<String>) -> Vec<Vec<RailType>> {
[INFO] [stderr]    |                      ^^^^^^^^^^^^ help: change this to: `&[String]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day13.rs:71:26
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn initiate_carts(lines: &Vec<String>) -> Vec<Cart> {
[INFO] [stderr]    |                          ^^^^^^^^^^^^ help: change this to: `&[String]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `y` is used as a loop counter. Consider using `for (y, item) in lines.enumerate()` or similar iterators
[INFO] [stderr]   --> src/solutions/day13.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |     for line in lines {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `x` is used as a loop counter. Consider using `for (x, item) in line.as_bytes().enumerate()` or similar iterators
[INFO] [stderr]   --> src/solutions/day13.rs:77:21
[INFO] [stderr]    |
[INFO] [stderr] 77 |         for byte in line.as_bytes() {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day13.rs:112:45
[INFO] [stderr]     |
[INFO] [stderr] 112 | fn move_cart_on_grid(cart: &mut Cart, grid: &Vec<Vec<RailType>>) {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<RailType>]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:146:18
[INFO] [stderr]     |
[INFO] [stderr] 146 |     fn as_vector(&self) -> Point {
[INFO] [stderr]     |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day1.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Point`
[INFO] [stderr]  --> src/solutions/day10.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct Point(i32, i32);
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PointWithVelocity`
[INFO] [stderr]  --> src/solutions/day10.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct PointWithVelocity {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solutions/day10.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn solve() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_point_section`
[INFO] [stderr]    --> src/solutions/day10.rs:77:1
[INFO] [stderr]     |
[INFO] [stderr] 77  | / fn print_point_section(
[INFO] [stderr] 78  | |     min_x: i32,
[INFO] [stderr] 79  | |     min_y: i32,
[INFO] [stderr] 80  | |     max_x: i32,
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |     }
[INFO] [stderr] 100 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day11.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `power_level`
[INFO] [stderr]   --> src/solutions/day11.rs:85:1
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn power_level(x: i32, y: i32, serial_number: i32) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:155:22
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn is_horizontal(&self) -> bool {
[INFO] [stderr]     |                      ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr] warning: function is never used: `print_grid`
[INFO] [stderr]   --> src/solutions/day11.rs:95:1
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn print_grid(grid: &Vec<Vec<i32>>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day12.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_rule`
[INFO] [stderr]   --> src/solutions/day12.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn parse_rule(line: &String) -> ((bool, bool, bool, bool, bool), bool) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_result`
[INFO] [stderr]   --> src/solutions/day12.rs:96:1
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn print_result(next_config: &Vec<&bool>, zero_offset: i64, generation: i64) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day13.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_grid`
[INFO] [stderr]   --> src/solutions/day13.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn parse_grid(lines: &Vec<String>) -> Vec<Vec<RailType>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `initiate_carts`
[INFO] [stderr]   --> src/solutions/day13.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn initiate_carts(lines: &Vec<String>) -> Vec<Cart> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `move_cart_on_grid`
[INFO] [stderr]    --> src/solutions/day13.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | fn move_cart_on_grid(cart: &mut Cart, grid: &Vec<Vec<RailType>>) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Up`
[INFO] [stderr]    --> src/solutions/day13.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     Up,
[INFO] [stderr]     |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Down`
[INFO] [stderr]    --> src/solutions/day13.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 |     Down,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]    --> src/solutions/day13.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     Left,
[INFO] [stderr]     |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:159:20
[INFO] [stderr]     |
[INFO] [stderr] 159 |     fn is_vertical(&self) -> bool {
[INFO] [stderr]     |                    ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]    --> src/solutions/day13.rs:142:5
[INFO] [stderr]     |
[INFO] [stderr] 142 |     Right,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `as_vector`
[INFO] [stderr]    --> src/solutions/day13.rs:146:5
[INFO] [stderr]     |
[INFO] [stderr] 146 |     fn as_vector(&self) -> Point {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_horizontal`
[INFO] [stderr]    --> src/solutions/day13.rs:155:5
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn is_horizontal(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_vertical`
[INFO] [stderr]    --> src/solutions/day13.rs:159:5
[INFO] [stderr]     |
[INFO] [stderr] 159 |     fn is_vertical(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_corner`
[INFO] [stderr]    --> src/solutions/day13.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn turn_corner(&self, c_type: char) -> Direction {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_left`
[INFO] [stderr]    --> src/solutions/day13.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn turn_left(&self) -> Direction {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_right`
[INFO] [stderr]    --> src/solutions/day13.rs:185:5
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn turn_right(&self) -> Direction {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Cart`
[INFO] [stderr]    --> src/solutions/day13.rs:196:1
[INFO] [stderr]     |
[INFO] [stderr] 196 | struct Cart {
[INFO] [stderr]     | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `RailType`
[INFO] [stderr]    --> src/solutions/day13.rs:203:1
[INFO] [stderr]     |
[INFO] [stderr] 203 | enum RailType {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day14.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_recipes_to`
[INFO] [stderr]   --> src/solutions/day14.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | / fn build_recipes_to(
[INFO] [stderr] 41 | |     recipes: &mut Vec<u8>,
[INFO] [stderr] 42 | |     target_count: usize,
[INFO] [stderr] 43 | |     elf_positions: &mut (usize, usize),
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |     elf_positions.1 = second_elf;
[INFO] [stderr] 67 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day2.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day3.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `GuardStart`
[INFO] [stderr]  --> src/solutions/day4.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     GuardStart,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `GuardSleep`
[INFO] [stderr]  --> src/solutions/day4.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     GuardSleep,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `GuardWake`
[INFO] [stderr]  --> src/solutions/day4.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     GuardWake,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `GuardLog`
[INFO] [stderr]   --> src/solutions/day4.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct GuardLog {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solutions/day4.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn solve() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_log_from_line`
[INFO] [stderr]    --> src/solutions/day4.rs:102:1
[INFO] [stderr]     |
[INFO] [stderr] 102 | fn parse_log_from_line(line: &str) -> GuardLog {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_log_type_from_message`
[INFO] [stderr]    --> src/solutions/day4.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | fn parse_log_type_from_message(message: &str) -> (GuardLogType, u32) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day5.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `react_string`
[INFO] [stderr]   --> src/solutions/day5.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn react_string(line: Vec<u8>) -> Vec<u8> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dist_to`
[INFO] [stderr]   --> src/solutions/day6.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn dist_to(&self, other_x: u16, other_y: u16) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solutions/day6.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn solve() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_point`
[INFO] [stderr]    --> src/solutions/day6.rs:101:1
[INFO] [stderr]     |
[INFO] [stderr] 101 | fn parse_point(line: &str, index: u16) -> FillPoint {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day7.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `node_cost`
[INFO] [stderr]    --> src/solutions/day7.rs:128:1
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn node_cost(node: &char) -> u16 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]  --> src/solutions/day8.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn solve() {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_metadata_rec`
[INFO] [stderr]   --> src/solutions/day8.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn sum_metadata_rec(tree_data: &mut VecDeque<u32>) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_node_value`
[INFO] [stderr]   --> src/solutions/day8.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn get_node_value(tree_data: &mut VecDeque<u32>) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/solutions/day9.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn solve() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:163:20
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn turn_corner(&self, c_type: char) -> Direction {
[INFO] [stderr]     |                    ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:176:18
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn turn_left(&self) -> Direction {
[INFO] [stderr]     |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:185:19
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn turn_right(&self) -> Direction {
[INFO] [stderr]     |                   ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/solutions/day1.rs:31:21
[INFO] [stderr]    |
[INFO] [stderr] 31 |         for diff in diffs.into_iter() {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `diffs`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `method_index` is used as a loop counter. Consider using `for (method_index, item) in methods.iter().enumerate()` or similar iterators
[INFO] [stderr]   --> src/solutions/day16.rs:44:27
[INFO] [stderr]    |
[INFO] [stderr] 44 |             for method in methods.iter() {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/solutions/day16.rs:58:31
[INFO] [stderr]    |
[INFO] [stderr] 58 |         if program_started && actual_opcodes.len() == 0 {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `actual_opcodes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day10.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |     points: &Vec<PointWithVelocity>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^ help: change this to: `&[PointWithVelocity]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:115:21
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn reg_equal(first: &Vec<i32>, second: &Vec<i32>) -> bool {
[INFO] [stderr]     |                     ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:115:40
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn reg_equal(first: &Vec<i32>, second: &Vec<i32>) -> bool {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:130:14
[INFO] [stderr]     |
[INFO] [stderr] 130 |     command: &Vec<i32>,
[INFO] [stderr]     |              ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:131:11
[INFO] [stderr]     |
[INFO] [stderr] 131 |     regs: &Vec<i32>,
[INFO] [stderr]     |           ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:132:15
[INFO] [stderr]     |
[INFO] [stderr] 132 |     expected: &Vec<i32>,
[INFO] [stderr]     |               ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:140:23
[INFO] [stderr]     |
[INFO] [stderr] 140 | fn reg_copy(original: &Vec<i32>) -> Vec<i32> {
[INFO] [stderr]     |                       ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:144:18
[INFO] [stderr]     |
[INFO] [stderr] 144 | fn addr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:147:18
[INFO] [stderr]     |
[INFO] [stderr] 147 | fn addi(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is used to index `grid`
[INFO] [stderr]   --> src/solutions/day11.rs:12:14
[INFO] [stderr]    |
[INFO] [stderr] 12 |     for i in 0..300 {
[INFO] [stderr]    |              ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 12 |     for (i, <item>) in grid.iter_mut().enumerate().take(300) {
[INFO] [stderr]    |         ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:151:18
[INFO] [stderr]     |
[INFO] [stderr] 151 | fn mulr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:154:18
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn muli(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:158:18
[INFO] [stderr]     |
[INFO] [stderr] 158 | fn banr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:161:18
[INFO] [stderr]     |
[INFO] [stderr] 161 | fn bani(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:165:18
[INFO] [stderr]     |
[INFO] [stderr] 165 | fn borr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:168:18
[INFO] [stderr]     |
[INFO] [stderr] 168 | fn bori(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:172:18
[INFO] [stderr]     |
[INFO] [stderr] 172 | fn setr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:175:18
[INFO] [stderr]     |
[INFO] [stderr] 175 | fn seti(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:179:18
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn gtir(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:186:18
[INFO] [stderr]     |
[INFO] [stderr] 186 | fn gtri(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:193:18
[INFO] [stderr]     |
[INFO] [stderr] 193 | fn gtrr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:201:18
[INFO] [stderr]     |
[INFO] [stderr] 201 | fn eqir(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day11.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn print_grid(grid: &Vec<Vec<i32>>) {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^ help: change this to: `&[Vec<i32>]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:208:18
[INFO] [stderr]     |
[INFO] [stderr] 208 | fn eqri(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:215:18
[INFO] [stderr]     |
[INFO] [stderr] 215 | fn eqrr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `grid`.
[INFO] [stderr]   --> src/solutions/day11.rs:97:14
[INFO] [stderr]    |
[INFO] [stderr] 97 |     for i in 0..grid.len() {
[INFO] [stderr]    |              ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 97 |     for <item> in &grid {
[INFO] [stderr]    |         ^^^^^^    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/solutions/day12.rs:29:20
[INFO] [stderr]    |
[INFO] [stderr] 29 |             .chain(next_config.iter().map(|x| *x))
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `next_config.iter().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/solutions/day12.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 | /         if seen_patterns.contains_key(&state) {
[INFO] [stderr] 61 | |             let prev_occurrence = seen_patterns.get(&state).expect("Key should be valid");
[INFO] [stderr] 62 | |             let step_size = generation - prev_occurrence.0;
[INFO] [stderr] 63 | |             let step_offset = zero_offset - prev_occurrence.1;
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |             seen_patterns.insert(state, (generation, zero_offset));
[INFO] [stderr] 73 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `seen_patterns.entry(state)`
[INFO] [stderr]    |
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/solutions/day2.rs:66:12
[INFO] [stderr]    |
[INFO] [stderr] 66 |         if matched_string.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!matched_string.is_empty()`
[INFO] [stderr]    = note: #[warn(clippy::map_entry)] on by default
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/solutions/day12.rs:80:21
[INFO] [stderr]    |
[INFO] [stderr] 80 | fn parse_rule(line: &String) -> ((bool, bool, bool, bool, bool), bool) {
[INFO] [stderr]    |                     ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day12.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn print_result(next_config: &Vec<&bool>, zero_offset: i64, generation: i64) {
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: change this to: `&[&bool]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/solutions/day3.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 40 |             if col_val > &1 {
[INFO] [stderr]    |                ^^^^^^^^^^--
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          help: use the right value directly: `1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day13.rs:50:22
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn parse_grid(lines: &Vec<String>) -> Vec<Vec<RailType>> {
[INFO] [stderr]    |                      ^^^^^^^^^^^^ help: change this to: `&[String]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/solutions/day13.rs:71:26
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn initiate_carts(lines: &Vec<String>) -> Vec<Cart> {
[INFO] [stderr]    |                          ^^^^^^^^^^^^ help: change this to: `&[String]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `y` is used as a loop counter. Consider using `for (y, item) in lines.enumerate()` or similar iterators
[INFO] [stderr]   --> src/solutions/day13.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |     for line in lines {
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `x` is used as a loop counter. Consider using `for (x, item) in line.as_bytes().enumerate()` or similar iterators
[INFO] [stderr]   --> src/solutions/day13.rs:77:21
[INFO] [stderr]    |
[INFO] [stderr] 77 |         for byte in line.as_bytes() {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/solutions/day4.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 | /         if !guard_minutes.contains_key(&log.guard) {
[INFO] [stderr] 34 | |             let initial_minutes: Vec<_> = vec![0; 60];
[INFO] [stderr] 35 | |             guard_minutes.insert(log.guard, initial_minutes);
[INFO] [stderr] 36 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `guard_minutes.entry(log.guard)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/solutions/day4.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 | /             let mut end_time = 60;
[INFO] [stderr] 41 | |             if log.log_type == GuardLogType::GuardWake {
[INFO] [stderr] 42 | |                 // Wake will always apply to current_guard
[INFO] [stderr] 43 | |                 end_time = log.time.minute();
[INFO] [stderr] 44 | |             }
[INFO] [stderr]    | |_____________^ help: it is more idiomatic to write: `let <mut> end_time = if log.log_type == GuardLogType::GuardWake { log.time.minute() } else { 60 };`
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day13.rs:112:45
[INFO] [stderr]     |
[INFO] [stderr] 112 | fn move_cart_on_grid(cart: &mut Cart, grid: &Vec<Vec<RailType>>) {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[Vec<RailType>]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/solutions/day4.rs:76:27
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let guard_array = guard_minutes.get(&guard).unwrap();
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&guard_minutes[&guard]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:146:18
[INFO] [stderr]     |
[INFO] [stderr] 146 |     fn as_vector(&self) -> Point {
[INFO] [stderr]     |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:155:22
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn is_horizontal(&self) -> bool {
[INFO] [stderr]     |                      ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:159:20
[INFO] [stderr]     |
[INFO] [stderr] 159 |     fn is_vertical(&self) -> bool {
[INFO] [stderr]     |                    ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:163:20
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn turn_corner(&self, c_type: char) -> Direction {
[INFO] [stderr]     |                    ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:176:18
[INFO] [stderr]     |
[INFO] [stderr] 176 |     fn turn_left(&self) -> Direction {
[INFO] [stderr]     |                  ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]  --> src/solutions/day5.rs:7:24
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let line: Vec<_> = lines[0].as_bytes().iter().map(|x| *x).collect();
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `lines[0].as_bytes().iter().cloned()`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day13.rs:185:19
[INFO] [stderr]     |
[INFO] [stderr] 185 |     fn turn_right(&self) -> Direction {
[INFO] [stderr]     |                   ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/solutions/day5.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 |           let filtered_line: Vec<_> = current_string
[INFO] [stderr]    |  _____________________________________^
[INFO] [stderr] 17 | |             .iter()
[INFO] [stderr] 18 | |             .filter(|c| **c != b'a' + letter_idx && **c != b'A' + letter_idx)
[INFO] [stderr] 19 | |             .map(|x| *x)
[INFO] [stderr]    | |________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let filtered_line: Vec<_> = current_string
[INFO] [stderr] 17 |             .iter()
[INFO] [stderr] 18 |             .filter(|c| **c != b'a' + letter_idx && **c != b'A' + letter_idx).cloned()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i16 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day5.rs:48:36
[INFO] [stderr]    |
[INFO] [stderr] 48 |             if i + 1 < cur_len && (cur_val as i16 - cur_string[i + 1] as i16).abs() == 32 {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: try: `i16::from(cur_val)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i16 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day5.rs:48:53
[INFO] [stderr]    |
[INFO] [stderr] 48 |             if i + 1 < cur_len && (cur_val as i16 - cur_string[i + 1] as i16).abs() == 32 {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i16::from(cur_string[i + 1])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/solutions/day6.rs:22:16
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn dist_to(&self, other_x: u16, other_y: u16) -> u16 {
[INFO] [stderr]    |                ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:23:18
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr]    |                  ^^^^^^^^^^^^^ help: try: `i32::from(self.x)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^ help: try: `i32::from(other_x)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:23:59
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^ help: try: `i32::from(self.y)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:23:75
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^^ help: try: `i32::from(other_y)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `method_index` is used as a loop counter. Consider using `for (method_index, item) in methods.iter().enumerate()` or similar iterators
[INFO] [stderr]   --> src/solutions/day16.rs:44:27
[INFO] [stderr]    |
[INFO] [stderr] 44 |             for method in methods.iter() {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/solutions/day16.rs:58:31
[INFO] [stderr]    |
[INFO] [stderr] 58 |         if program_started && actual_opcodes.len() == 0 {
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `actual_opcodes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:94:39
[INFO] [stderr]    |
[INFO] [stderr] 94 |             set.iter().map(|(_id, d)| *d as u32).sum()
[INFO] [stderr]    |                                       ^^^^^^^^^ help: try: `u32::from(*d)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:115:21
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn reg_equal(first: &Vec<i32>, second: &Vec<i32>) -> bool {
[INFO] [stderr]     |                     ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:115:40
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn reg_equal(first: &Vec<i32>, second: &Vec<i32>) -> bool {
[INFO] [stderr]     |                                        ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:130:14
[INFO] [stderr]     |
[INFO] [stderr] 130 |     command: &Vec<i32>,
[INFO] [stderr]     |              ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:131:11
[INFO] [stderr]     |
[INFO] [stderr] 131 |     regs: &Vec<i32>,
[INFO] [stderr]     |           ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:132:15
[INFO] [stderr]     |
[INFO] [stderr] 132 |     expected: &Vec<i32>,
[INFO] [stderr]     |               ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:140:23
[INFO] [stderr]     |
[INFO] [stderr] 140 | fn reg_copy(original: &Vec<i32>) -> Vec<i32> {
[INFO] [stderr]     |                       ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:144:18
[INFO] [stderr]     |
[INFO] [stderr] 144 | fn addr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:147:18
[INFO] [stderr]     |
[INFO] [stderr] 147 | fn addi(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:151:18
[INFO] [stderr]     |
[INFO] [stderr] 151 | fn mulr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/solutions/day7.rs:85:15
[INFO] [stderr]    |
[INFO] [stderr] 85 |         while pending_nodes.len() > 0 && pending_nodes.peek().unwrap().0 <= elapsed_seconds {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!pending_nodes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:154:18
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn muli(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:158:18
[INFO] [stderr]     |
[INFO] [stderr] 158 | fn banr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:161:18
[INFO] [stderr]     |
[INFO] [stderr] 161 | fn bani(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:165:18
[INFO] [stderr]     |
[INFO] [stderr] 165 | fn borr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day7.rs:128:20
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn node_cost(node: &char) -> u16 {
[INFO] [stderr]     |                    ^^^^^ help: consider passing by value instead: `char`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u16 may become silently lossy if types change
[INFO] [stderr]    --> src/solutions/day7.rs:133:12
[INFO] [stderr]     |
[INFO] [stderr] 133 |     return b[0] as u16 - alpha_offset + 60;
[INFO] [stderr]     |            ^^^^^^^^^^^ help: try: `u16::from(b[0])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:168:18
[INFO] [stderr]     |
[INFO] [stderr] 168 | fn bori(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:172:18
[INFO] [stderr]     |
[INFO] [stderr] 172 | fn setr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:175:18
[INFO] [stderr]     |
[INFO] [stderr] 175 | fn seti(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:179:18
[INFO] [stderr]     |
[INFO] [stderr] 179 | fn gtir(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:186:18
[INFO] [stderr]     |
[INFO] [stderr] 186 | fn gtri(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/solutions/day8.rs:15:40
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let mut tree_copy: VecDeque<u32> = data.iter().map(|x| *x).collect();
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `data.iter().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:193:18
[INFO] [stderr]     |
[INFO] [stderr] 193 | fn gtrr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/solutions/day8.rs:20:40
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut tree_copy: VecDeque<u32> = data.iter().map(|x| *x).collect();
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `data.iter().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:201:18
[INFO] [stderr]     |
[INFO] [stderr] 201 | fn eqir(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:208:18
[INFO] [stderr]     |
[INFO] [stderr] 208 | fn eqri(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/solutions/day16.rs:215:18
[INFO] [stderr]     |
[INFO] [stderr] 215 | fn eqrr(command: &Vec<i32>, regs: &mut Vec<i32>) {
[INFO] [stderr]     |                  ^^^^^^^^^ help: change this to: `&[i32]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/solutions/day8.rs:60:31
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 node_value += child_values.get(child_index).unwrap();
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `child_values[child_index]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/solutions/day2.rs:66:12
[INFO] [stderr]    |
[INFO] [stderr] 66 |         if matched_string.len() > 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!matched_string.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/solutions/day3.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 40 |             if col_val > &1 {
[INFO] [stderr]    |                ^^^^^^^^^^--
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          help: use the right value directly: `1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: usage of `contains_key` followed by `insert` on a `HashMap`
[INFO] [stderr]   --> src/solutions/day4.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 | /         if !guard_minutes.contains_key(&log.guard) {
[INFO] [stderr] 34 | |             let initial_minutes: Vec<_> = vec![0; 60];
[INFO] [stderr] 35 | |             guard_minutes.insert(log.guard, initial_minutes);
[INFO] [stderr] 36 | |         }
[INFO] [stderr]    | |_________^ help: consider using: `guard_minutes.entry(log.guard)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_entry
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/solutions/day4.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 | /             let mut end_time = 60;
[INFO] [stderr] 41 | |             if log.log_type == GuardLogType::GuardWake {
[INFO] [stderr] 42 | |                 // Wake will always apply to current_guard
[INFO] [stderr] 43 | |                 end_time = log.time.minute();
[INFO] [stderr] 44 | |             }
[INFO] [stderr]    | |_____________^ help: it is more idiomatic to write: `let <mut> end_time = if log.log_type == GuardLogType::GuardWake { log.time.minute() } else { 60 };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = note: you might not need `mut` at all
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/solutions/day4.rs:76:27
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let guard_array = guard_minutes.get(&guard).unwrap();
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&guard_minutes[&guard]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]  --> src/solutions/day5.rs:7:24
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let line: Vec<_> = lines[0].as_bytes().iter().map(|x| *x).collect();
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `lines[0].as_bytes().iter().cloned()`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/solutions/day5.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 |           let filtered_line: Vec<_> = current_string
[INFO] [stderr]    |  _____________________________________^
[INFO] [stderr] 17 | |             .iter()
[INFO] [stderr] 18 | |             .filter(|c| **c != b'a' + letter_idx && **c != b'A' + letter_idx)
[INFO] [stderr] 19 | |             .map(|x| *x)
[INFO] [stderr]    | |________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let filtered_line: Vec<_> = current_string
[INFO] [stderr] 17 |             .iter()
[INFO] [stderr] 18 |             .filter(|c| **c != b'a' + letter_idx && **c != b'A' + letter_idx).cloned()
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i16 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day5.rs:48:36
[INFO] [stderr]    |
[INFO] [stderr] 48 |             if i + 1 < cur_len && (cur_val as i16 - cur_string[i + 1] as i16).abs() == 32 {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^ help: try: `i16::from(cur_val)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i16 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day5.rs:48:53
[INFO] [stderr]    |
[INFO] [stderr] 48 |             if i + 1 < cur_len && (cur_val as i16 - cur_string[i + 1] as i16).abs() == 32 {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `i16::from(cur_string[i + 1])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/solutions/day6.rs:22:16
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn dist_to(&self, other_x: u16, other_y: u16) -> u16 {
[INFO] [stderr]    |                ^^^^^ help: consider passing by value instead: `self`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:23:18
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr]    |                  ^^^^^^^^^^^^^ help: try: `i32::from(self.x)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^ help: try: `i32::from(other_x)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:23:59
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^ help: try: `i32::from(self.y)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:23:75
[INFO] [stderr]    |
[INFO] [stderr] 23 |         return ((self.x as i32 - other_x as i32).abs() + (self.y as i32 - other_y as i32).abs())
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^^ help: try: `i32::from(other_y)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/solutions/day6.rs:94:39
[INFO] [stderr]    |
[INFO] [stderr] 94 |             set.iter().map(|(_id, d)| *d as u32).sum()
[INFO] [stderr]    |                                       ^^^^^^^^^ help: try: `u32::from(*d)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/solutions/day7.rs:85:15
[INFO] [stderr]    |
[INFO] [stderr] 85 |         while pending_nodes.len() > 0 && pending_nodes.peek().unwrap().0 <= elapsed_seconds {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!pending_nodes.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]    --> src/solutions/day7.rs:128:20
[INFO] [stderr]     |
[INFO] [stderr] 128 | fn node_cost(node: &char) -> u16 {
[INFO] [stderr]     |                    ^^^^^ help: consider passing by value instead: `char`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u16 may become silently lossy if types change
[INFO] [stderr]    --> src/solutions/day7.rs:133:12
[INFO] [stderr]     |
[INFO] [stderr] 133 |     return b[0] as u16 - alpha_offset + 60;
[INFO] [stderr]     |            ^^^^^^^^^^^ help: try: `u16::from(b[0])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/solutions/day8.rs:15:40
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let mut tree_copy: VecDeque<u32> = data.iter().map(|x| *x).collect();
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `data.iter().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]   --> src/solutions/day8.rs:20:40
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut tree_copy: VecDeque<u32> = data.iter().map(|x| *x).collect();
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^ help: Consider calling the dedicated `cloned` method: `data.iter().cloned()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/solutions/day8.rs:60:31
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 node_value += child_values.get(child_index).unwrap();
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `child_values[child_index]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.41s
[INFO] running `"docker" "inspect" "7badc85ff3244328073a1c8e88be6cd24634a1baba6b3803ef9e5e3d2cac467b"`
[INFO] running `"docker" "rm" "-f" "7badc85ff3244328073a1c8e88be6cd24634a1baba6b3803ef9e5e3d2cac467b"`
[INFO] [stdout] 7badc85ff3244328073a1c8e88be6cd24634a1baba6b3803ef9e5e3d2cac467b