[INFO] updating cached repository migerh/aoc2018-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/migerh/aoc2018-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/migerh/aoc2018-rs" "work/ex/clippy-test-run/sources/stable/gh/migerh/aoc2018-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/migerh/aoc2018-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/migerh/aoc2018-rs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/migerh/aoc2018-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/migerh/aoc2018-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 33e7360aa13a6eafd42ab2c6923ec194541c90e8
[INFO] sha for GitHub repo migerh/aoc2018-rs: 33e7360aa13a6eafd42ab2c6923ec194541c90e8
[INFO] validating manifest of migerh/aoc2018-rs 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 migerh/aoc2018-rs 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 migerh/aoc2018-rs
[INFO] finished frobbing migerh/aoc2018-rs
[INFO] frobbed toml for migerh/aoc2018-rs written to work/ex/clippy-test-run/sources/stable/gh/migerh/aoc2018-rs/Cargo.toml
[INFO] started frobbing migerh/aoc2018-rs
[INFO] finished frobbing migerh/aoc2018-rs
[INFO] frobbed toml for migerh/aoc2018-rs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/migerh/aoc2018-rs/Cargo.toml
[INFO] crate migerh/aoc2018-rs 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 migerh/aoc2018-rs 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/migerh/aoc2018-rs:/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] bc84619b57908caca6aeb1f5d0163b333d6eadd4f01dda9e980d0cef7fe817df
[INFO] running `"docker" "start" "-a" "bc84619b57908caca6aeb1f5d0163b333d6eadd4f01dda9e980d0cef7fe817df"`
[INFO] [stderr]     Checking y2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/day3/mod.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let h = parse(&cap[5]);
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/day10/mod.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/day15/cave.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/day3/mod.rs:32:9
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let h = parse(&cap[5]);
[INFO] [stderr]    |         ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/day10/mod.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::println_empty_string)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: using `println!("")`
[INFO] [stderr]   --> src/day15/cave.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     println!("");
[INFO] [stderr]    |     ^^^^^^^^^^^^ help: replace it with: `println!()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#println_empty_string
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/day3/mod.rs:50:3
[INFO] [stderr]    |
[INFO] [stderr] 50 |   boxes
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/day3/mod.rs:40:15
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let boxes = input
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 41 | |     .split("\n")
[INFO] [stderr] 42 | |     .filter(|v| *v != "")
[INFO] [stderr] 43 | |     .map(|v| Box::from_str(v))
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |     })
[INFO] [stderr] 48 | |     .collect::<Vec<_>>();
[INFO] [stderr]    | |________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/day6/mod.rs:34:30
[INFO] [stderr]    |
[INFO] [stderr] 34 |   let mut closest_distance = 1000000;
[INFO] [stderr]    |                              ^^^^^^^ help: consider: `1_000_000`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/day7/common.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |   rules
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/day7/common.rs:33:15
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let rules = preprocess_input(input)
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 34 | |     .into_iter()
[INFO] [stderr] 35 | |     .map(|v| parse_edge(v))
[INFO] [stderr] 36 | |     .collect::<Result<Vec<Rule>, _>>();
[INFO] [stderr]    | |______________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/day9/mod.rs:71:21
[INFO] [stderr]    |
[INFO] [stderr] 71 |   let last_marble = 7170000;
[INFO] [stderr]    |                     ^^^^^^^ help: consider: `7_170_000`
[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/day10/mod.rs:47:18
[INFO] [stderr]    |
[INFO] [stderr] 47 |   let mut min = (100000, 100000);
[INFO] [stderr]    |                  ^^^^^^ help: consider: `100_000`
[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/day10/mod.rs:47:26
[INFO] [stderr]    |
[INFO] [stderr] 47 |   let mut min = (100000, 100000);
[INFO] [stderr]    |                          ^^^^^^ help: consider: `100_000`
[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/day10/mod.rs:104:31
[INFO] [stderr]     |
[INFO] [stderr] 104 |   let mut previous_bb_size = (1000000, 1000000);
[INFO] [stderr]     |                               ^^^^^^^ help: consider: `1_000_000`
[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/day10/mod.rs:104:40
[INFO] [stderr]     |
[INFO] [stderr] 104 |   let mut previous_bb_size = (1000000, 1000000);
[INFO] [stderr]     |                                        ^^^^^^^ help: consider: `1_000_000`
[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/day10/mod.rs:106:15
[INFO] [stderr]     |
[INFO] [stderr] 106 |   for i in 0..100000 {
[INFO] [stderr]     |               ^^^^^^ help: consider: `100_000`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/day12/mod.rs:10:3
[INFO] [stderr]    |
[INFO] [stderr] 10 |   plants
[INFO] [stderr]    |   ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/day12/mod.rs:6:16
[INFO] [stderr]    |
[INFO] [stderr] 6  |     let plants = initial_state
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 7  | |     .chars()
[INFO] [stderr] 8  | |     .collect();
[INFO] [stderr]    | |______________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/day14/mod.rs:74:35
[INFO] [stderr]    |
[INFO] [stderr] 74 |   let solution_1 = concat(&scores[209231..209241]).parse::<usize>()?;
[INFO] [stderr]    |                                   ^^^^^^ help: consider: `209_231`
[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/day14/mod.rs:74:43
[INFO] [stderr]    |
[INFO] [stderr] 74 |   let solution_1 = concat(&scores[209231..209241]).parse::<usize>()?;
[INFO] [stderr]    |                                           ^^^^^^ help: consider: `209_241`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/day3/mod.rs:50:3
[INFO] [stderr]    |
[INFO] [stderr] 50 |   boxes
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/day3/mod.rs:40:15
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let boxes = input
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 41 | |     .split("\n")
[INFO] [stderr] 42 | |     .filter(|v| *v != "")
[INFO] [stderr] 43 | |     .map(|v| Box::from_str(v))
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |     })
[INFO] [stderr] 48 | |     .collect::<Vec<_>>();
[INFO] [stderr]    | |________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/day4/mod.rs:195:37
[INFO] [stderr]     |
[INFO] [stderr] 195 |     assert_eq!(problem1().unwrap(), 103720);
[INFO] [stderr]     |                                     ^^^^^^ help: consider: `103_720`
[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/day4/mod.rs:200:37
[INFO] [stderr]     |
[INFO] [stderr] 200 |     assert_eq!(problem2().unwrap(), 110913);
[INFO] [stderr]     |                                     ^^^^^^ help: consider: `110_913`
[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/day6/mod.rs:34:30
[INFO] [stderr]    |
[INFO] [stderr] 34 |   let mut closest_distance = 1000000;
[INFO] [stderr]    |                              ^^^^^^^ help: consider: `1_000_000`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/day7/common.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |   rules
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/day7/common.rs:33:15
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let rules = preprocess_input(input)
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 34 | |     .into_iter()
[INFO] [stderr] 35 | |     .map(|v| parse_edge(v))
[INFO] [stderr] 36 | |     .collect::<Result<Vec<Rule>, _>>();
[INFO] [stderr]    | |______________________________________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/day9/mod.rs:71:21
[INFO] [stderr]    |
[INFO] [stderr] 71 |   let last_marble = 7170000;
[INFO] [stderr]    |                     ^^^^^^^ help: consider: `7_170_000`
[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/day9/mod.rs:95:41
[INFO] [stderr]    |
[INFO] [stderr] 95 |     assert_eq!(play(13, 7999).unwrap(), 146373);
[INFO] [stderr]    |                                         ^^^^^^ help: consider: `146_373`
[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/day9/mod.rs:115:37
[INFO] [stderr]     |
[INFO] [stderr] 115 |     assert_eq!(problem1().unwrap(), 428690);
[INFO] [stderr]     |                                     ^^^^^^ help: consider: `428_690`
[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/day9/mod.rs:120:37
[INFO] [stderr]     |
[INFO] [stderr] 120 |     assert_eq!(problem2().unwrap(), 3628143500);
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: consider: `3_628_143_500`
[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/day10/mod.rs:47:18
[INFO] [stderr]    |
[INFO] [stderr] 47 |   let mut min = (100000, 100000);
[INFO] [stderr]    |                  ^^^^^^ help: consider: `100_000`
[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/day10/mod.rs:47:26
[INFO] [stderr]    |
[INFO] [stderr] 47 |   let mut min = (100000, 100000);
[INFO] [stderr]    |                          ^^^^^^ help: consider: `100_000`
[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/day10/mod.rs:104:31
[INFO] [stderr]     |
[INFO] [stderr] 104 |   let mut previous_bb_size = (1000000, 1000000);
[INFO] [stderr]     |                               ^^^^^^^ help: consider: `1_000_000`
[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/day10/mod.rs:104:40
[INFO] [stderr]     |
[INFO] [stderr] 104 |   let mut previous_bb_size = (1000000, 1000000);
[INFO] [stderr]     |                                        ^^^^^^^ help: consider: `1_000_000`
[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/day10/mod.rs:106:15
[INFO] [stderr]     |
[INFO] [stderr] 106 |   for i in 0..100000 {
[INFO] [stderr]     |               ^^^^^^ help: consider: `100_000`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/day12/mod.rs:10:3
[INFO] [stderr]    |
[INFO] [stderr] 10 |   plants
[INFO] [stderr]    |   ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/day12/mod.rs:6:16
[INFO] [stderr]    |
[INFO] [stderr] 6  |     let plants = initial_state
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 7  | |     .chars()
[INFO] [stderr] 8  | |     .collect();
[INFO] [stderr]    | |______________^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/day12/mod.rs:155:28
[INFO] [stderr]     |
[INFO] [stderr] 155 |     assert_eq!(problem2(), 3100000000293);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^ help: consider: `3_100_000_000_293`
[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/day14/mod.rs:74:35
[INFO] [stderr]    |
[INFO] [stderr] 74 |   let solution_1 = concat(&scores[209231..209241]).parse::<usize>()?;
[INFO] [stderr]    |                                   ^^^^^^ help: consider: `209_231`
[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/day14/mod.rs:74:43
[INFO] [stderr]    |
[INFO] [stderr] 74 |   let solution_1 = concat(&scores[209231..209241]).parse::<usize>()?;
[INFO] [stderr]    |                                           ^^^^^^ help: consider: `209_241`
[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/day14/mod.rs:87:38
[INFO] [stderr]    |
[INFO] [stderr] 87 |     assert_eq!(problems().unwrap(), (6126491027, 20191616));
[INFO] [stderr]    |                                      ^^^^^^^^^^ help: consider: `6_126_491_027`
[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/day14/mod.rs:87:50
[INFO] [stderr]    |
[INFO] [stderr] 87 |     assert_eq!(problems().unwrap(), (6126491027, 20191616));
[INFO] [stderr]    |                                                  ^^^^^^^^ help: consider: `20_191_616`
[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: function is never used: `print_state`
[INFO] [stderr]   --> src/day15/cave.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn print_state(state: &Vec<Vec<char>>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_units`
[INFO] [stderr]   --> src/day15/cave.rs:80:3
[INFO] [stderr]    |
[INFO] [stderr] 80 |   pub fn move_units(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `attack`
[INFO] [stderr]   --> src/day15/cave.rs:99:3
[INFO] [stderr]    |
[INFO] [stderr] 99 |   pub fn attack(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_with_units_burned_in`
[INFO] [stderr]    --> src/day15/cave.rs:163:3
[INFO] [stderr]     |
[INFO] [stderr] 163 |   pub fn print_with_units_burned_in(&self) {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]  --> src/day1/mod.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 |     .split("\n")
[INFO] [stderr]   |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day1/mod.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[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/day2/mod.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn find_similar<'a>(list: &Vec<&'a str>, s: &'a str) -> Option<&'a str> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^ help: change this to: `&[&'a str]`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/day2/mod.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/day2/mod.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | /     match find_similar(&serials, serial) {
[INFO] [stderr] 35 | |       Some(v) => println!("{} is close to {}", serial, v),
[INFO] [stderr] 36 | |       None => (),
[INFO] [stderr] 37 | |     }
[INFO] [stderr]    | |_____^ help: try this: `if let Some(v) = find_similar(&serials, serial) { println!("{} is close to {}", serial, v) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day2/mod.rs:78:12
[INFO] [stderr]    |
[INFO] [stderr] 78 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day3/mod.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]   --> src/day3/mod.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |         }).or_insert(vec![b.id]);
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![b.id])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/day3/mod.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 |         .and_modify(|v| *v = *v && true)
[INFO] [stderr]    |                              ^^^^^^^^^^ help: try: `*v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against true are unnecessary
[INFO] [stderr]    --> src/day3/mod.rs:111:8
[INFO] [stderr]     |
[INFO] [stderr] 111 |     if d.1 == true {
[INFO] [stderr]     |        ^^^^^^^^^^^ help: try simplifying it as shown: `d.1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: trivial regex
[INFO] [stderr]   --> src/day4/mod.rs:34:52
[INFO] [stderr]    |
[INFO] [stderr] 34 |       static ref REFallsAsleep: Regex = Regex::new(r"falls asleep").unwrap();
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivial_regex)] on by default
[INFO] [stderr]    = help: consider using `str::contains`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivial_regex
[INFO] [stderr] 
[INFO] [stderr] warning: trivial regex
[INFO] [stderr]   --> src/day4/mod.rs:35:48
[INFO] [stderr]    |
[INFO] [stderr] 35 |       static ref REWakesUp: Regex = Regex::new(r"wakes up").unwrap();
[INFO] [stderr]    |                                                ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using `str::contains`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivial_regex
[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/day4/mod.rs:106:35
[INFO] [stderr]     |
[INFO] [stderr] 106 | fn get_sleeping_patterns(records: &Vec<Record>) -> BTreeMap<(u32, u32), u32> {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^ help: change this to: `&[Record]`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/day4/mod.rs:137:33
[INFO] [stderr]     |
[INFO] [stderr] 137 |       .and_modify(|v: &mut u32| *v = *v + *value)
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^ help: replace it with: `*v += *value`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day6/mod.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 |   let mut split = s.split(",");
[INFO] [stderr]    |                           ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[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/day6/mod.rs:32:44
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn find_closest_point(q: Location, points: &Vec<Coords>) -> (Option<Coords>, i32) {
[INFO] [stderr]    |                                            ^^^^^^^^^^^^ help: change this to: `&[Coords]`
[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/day6/mod.rs:49:40
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn calculate_closest_point_map(coords: &Vec<Coords>, start: Location, end: Location) -> BTreeMap<Location, (Option<Coords>, i32)> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: change this to: `&[Coords]`
[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/day7/common.rs:41:25
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn find_root(rules: &Vec<Rule>) -> Vec<char> {
[INFO] [stderr]    |                         ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/common.rs:55:37
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn all_dependencies_done(rules: &Vec<Rule>, task: char, done: &Vec<char>) -> bool {
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/common.rs:55:67
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn all_dependencies_done(rules: &Vec<Rule>, task: char, done: &Vec<char>) -> bool {
[INFO] [stderr]    |                                                                   ^^^^^^^^^^ help: change this to: `&[char]`
[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/day7/problem1.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn find_next_steps(rules: &Vec<Rule>, task: char, done: &Vec<char>) -> Vec<char> {
[INFO] [stderr]   |                           ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem1.rs:4:57
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn find_next_steps(rules: &Vec<Rule>, task: char, done: &Vec<char>) -> Vec<char> {
[INFO] [stderr]   |                                                         ^^^^^^^^^^ help: change this to: `&[char]`
[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/day7/problem1.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn find_next_letters(rules: &Vec<Rule>, letters: &mut Vec<char>, done: &mut Vec<char>) -> Vec<char> {
[INFO] [stderr]    |                             ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem1.rs:31:24
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn traverse(rules: &Vec<Rule>, letters: &mut Vec<char>, already_visited: &mut Vec<char>) {
[INFO] [stderr]    |                        ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem2.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn find_open_tasks(rules: &Vec<Rule>, done: &Vec<char>, in_work: &Vec<char>) -> BTreeSet<char> {
[INFO] [stderr]    |                           ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem2.rs:10:45
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn find_open_tasks(rules: &Vec<Rule>, done: &Vec<char>, in_work: &Vec<char>) -> BTreeSet<char> {
[INFO] [stderr]    |                                             ^^^^^^^^^^ help: change this to: `&[char]`
[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/day7/problem2.rs:10:66
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn find_open_tasks(rules: &Vec<Rule>, done: &Vec<char>, in_work: &Vec<char>) -> BTreeSet<char> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^ help: change this to: `&[char]`
[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/day7/problem2.rs:31:34
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn all_workers_idle(workers: &Vec<Option<Slot>>) -> bool {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^ help: change this to: `&[Option<Slot>]`
[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/day7/problem2.rs:35:30
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn fetch_new_task(rules: &Vec<Rule>, done: &Vec<char>, in_work: &mut Vec<char>) -> Option<Slot> {
[INFO] [stderr]    |                              ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem2.rs:35:48
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn fetch_new_task(rules: &Vec<Rule>, done: &Vec<char>, in_work: &mut Vec<char>) -> Option<Slot> {
[INFO] [stderr]    |                                                ^^^^^^^^^^ help: change this to: `&[char]`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/day9/mod.rs:39:17
[INFO] [stderr]    |
[INFO] [stderr] 39 |   for marble in 1..(last_marble+1) {
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ help: use: `1..=last_marble`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[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/day10/mod.rs:45:25
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn bounding_box(lights: &Vec<Light>) -> ((i32, i32), (i32, i32)) {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: change this to: `&[Light]`
[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/day10/mod.rs:69:25
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn print_lights(lights: &Vec<Light>, size: (i32, i32), min: (i32, i32)) {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: change this to: `&[Light]`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/day10/mod.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |   for _i in 0..(size.1 + 1) {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: use: `0..=size.1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[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/day10/mod.rs:92:30
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn bounding_box_size(lights: &Vec<Light>) -> (i32, i32) {
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: change this to: `&[Light]`
[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/day11/mod.rs:36:29
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn power_level_square(grid: &Vec<i32>, top_left: (usize, usize)) -> 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/day11/mod.rs:71:21
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn get_column(grid: &Vec<i32>, top_left: (usize, usize), size: usize) -> 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/day11/mod.rs:83:18
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn get_row(grid: &Vec<i32>, top_left: (usize, usize), size: usize) -> 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 creates an owned instance just for comparison
[INFO] [stderr]   --> src/day12/mod.rs:19:21
[INFO] [stderr]    |
[INFO] [stderr] 19 |       if extract == key.to_string() {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^ help: try: `*key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[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/day12/mod.rs:29:16
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn checksum(v: &Vec<char>) -> usize {
[INFO] [stderr]    |                ^^^^^^^^^^ help: change this to: `&[char]`
[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/day13/mod.rs:53:30
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn drive(cart: Cart, tracks: &Vec<Vec<char>>) -> Cart {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^ help: change this to: `&[Vec<char>]`
[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/day13/mod.rs:81:23
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn find_carts(tracks: &Vec<Vec<char>>) -> Vec<Cart> {
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^ help: change this to: `&[Vec<char>]`
[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/day13/mod.rs:95:26
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn find_collision(carts: &Vec<Cart>) -> Vec<usize> {
[INFO] [stderr]    |                          ^^^^^^^^^^ help: change this to: `&[Cart]`
[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: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/day13/mod.rs:106:8
[INFO] [stderr]     |
[INFO] [stderr] 106 |       .or_insert(vec![index]);
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![index])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/day13/mod.rs:124:33
[INFO] [stderr]     |
[INFO] [stderr] 124 |       let carts_copy: Vec<Cart> = carts
[INFO] [stderr]     |  _________________________________^
[INFO] [stderr] 125 | |       .iter()
[INFO] [stderr] 126 | |       .map(|v| v.clone())
[INFO] [stderr]     | |_________________________^
[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] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 124 |     let carts_copy: Vec<Cart> = carts
[INFO] [stderr] 125 |       .iter().cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/day13/mod.rs:138:16
[INFO] [stderr]     |
[INFO] [stderr] 138 |             if collided.len() > 0 {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!collided.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/day13/mod.rs:152:23
[INFO] [stderr]     |
[INFO] [stderr] 152 | fn print_carts(carts: &Vec<Cart>) {
[INFO] [stderr]     |                       ^^^^^^^^^^ help: change this to: `&[Cart]`
[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/day13/mod.rs:196:8
[INFO] [stderr]     |
[INFO] [stderr] 196 |     if unbroken_carts.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `unbroken_carts.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/day15/cave.rs:35:70
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn print_units_onto_board(printed_board: &mut Vec<Vec<char>>, units: &Vec<Unit>) {
[INFO] [stderr]    |                                                                      ^^^^^^^^^^ help: change this to: `&[Unit]`
[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/day15/cave.rs:45:23
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn print_state(state: &Vec<Vec<char>>) {
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^ help: change this to: `&[Vec<char>]`
[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/day15/cave.rs:52:34
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn print_state_with_stats(state: &Vec<Vec<char>>, units: &Vec<Unit>) {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^ help: change this to: `&[Vec<char>]`
[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/day15/cave.rs:52:58
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn print_state_with_stats(state: &Vec<Vec<char>>, units: &Vec<Unit>) {
[INFO] [stderr]    |                                                          ^^^^^^^^^^ help: change this to: `&[Unit]`
[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 seem to want to iterate on a map's keys
[INFO] [stderr]   --> src/day15/unit.rs:50:23
[INFO] [stderr]    |
[INFO] [stderr] 50 |       for (pos, _) in &result {
[INFO] [stderr]    |                       ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::for_kv_map)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 50 |       for pos in result.keys() {
[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/day15/unit.rs:113:47
[INFO] [stderr]     |
[INFO] [stderr] 113 |   fn find_closest_positions(target_positions: &Vec<Position>, distance_map: &BTreeMap<Position, u32>) -> (Vec<Position>, u32) {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^ help: change this to: `&[Position]`
[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: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/day15/unit.rs:125:10
[INFO] [stderr]     |
[INFO] [stderr] 125 |         .or_insert(vec![pos.clone()]);
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![pos.clone()])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/day15/unit.rs:125:25
[INFO] [stderr]     |
[INFO] [stderr] 125 |         .or_insert(vec![pos.clone()]);
[INFO] [stderr]     |                         ^^^^^^^^^^^ help: try dereferencing it: `*pos`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/day15/unit.rs:216:10
[INFO] [stderr]     |
[INFO] [stderr] 216 |         .or_insert(vec![entry]);
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![entry])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_state`
[INFO] [stderr]   --> src/day15/cave.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn print_state(state: &Vec<Vec<char>>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `move_units`
[INFO] [stderr]   --> src/day15/cave.rs:80:3
[INFO] [stderr]    |
[INFO] [stderr] 80 |   pub fn move_units(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `attack`
[INFO] [stderr]   --> src/day15/cave.rs:99:3
[INFO] [stderr]    |
[INFO] [stderr] 99 |   pub fn attack(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_with_units_burned_in`
[INFO] [stderr]    --> src/day15/cave.rs:163:3
[INFO] [stderr]     |
[INFO] [stderr] 163 |   pub fn print_with_units_burned_in(&self) {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]  --> src/day1/mod.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 |     .split("\n")
[INFO] [stderr]   |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]  --> src/day16/ops.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn op_map() -> BTreeMap<&'static str, &'static Fn(State, i32, i32, i32) -> Option<State>> {
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day1/mod.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[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/day2/mod.rs:16:27
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn find_similar<'a>(list: &Vec<&'a str>, s: &'a str) -> Option<&'a str> {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^ help: change this to: `&[&'a str]`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/day2/mod.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/day2/mod.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | /     match find_similar(&serials, serial) {
[INFO] [stderr] 35 | |       Some(v) => println!("{} is close to {}", serial, v),
[INFO] [stderr] 36 | |       None => (),
[INFO] [stderr] 37 | |     }
[INFO] [stderr]    | |_____^ help: try this: `if let Some(v) = find_similar(&serials, serial) { println!("{} is close to {}", serial, v) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day2/mod.rs:78:12
[INFO] [stderr]    |
[INFO] [stderr] 78 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[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/day16/problems.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn intersect(a: &Vec<&'static str>, b: &Vec<&'static str>) -> Vec<&'static str> {
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ help: change this to: `&[&'static 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/day16/problems.rs:67:40
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn intersect(a: &Vec<&'static str>, b: &Vec<&'static str>) -> Vec<&'static str> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^ help: change this to: `&[&'static 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: trivial regex
[INFO] [stderr]   --> src/day16/problems.rs:84:46
[INFO] [stderr]    |
[INFO] [stderr] 84 |     static ref RE_before: Regex = Regex::new(r"Before:").unwrap();
[INFO] [stderr]    |                                              ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using `str::contains`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivial_regex
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `k` is used to index `opcode_map`
[INFO] [stderr]    --> src/day16/problems.rs:138:16
[INFO] [stderr]     |
[INFO] [stderr] 138 |       for k in 0..opcode_map.len() {
[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] 138 |       for (k, <item>) in opcode_map.iter_mut().enumerate() {
[INFO] [stderr]     |           ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/utils/mod.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day3/mod.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:77:3
[INFO] [stderr]    |
[INFO] [stderr] 77 | /   match run() {
[INFO] [stderr] 78 | |     Err(err) => println!("Error occurred: {}", err),
[INFO] [stderr] 79 | |     _ => {}
[INFO] [stderr] 80 | |   }
[INFO] [stderr]    | |___^ help: try this: `if let Err(err) = run() { println!("Error occurred: {}", err) }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]   --> src/day3/mod.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |         }).or_insert(vec![b.id]);
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![b.id])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: this boolean expression can be simplified
[INFO] [stderr]   --> src/day3/mod.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 |         .and_modify(|v| *v = *v && true)
[INFO] [stderr]    |                              ^^^^^^^^^^ help: try: `*v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::nonminimal_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stderr] 
[INFO] [stderr] warning: equality checks against true are unnecessary
[INFO] [stderr]    --> src/day3/mod.rs:111:8
[INFO] [stderr]     |
[INFO] [stderr] 111 |     if d.1 == true {
[INFO] [stderr]     |        ^^^^^^^^^^^ help: try simplifying it as shown: `d.1`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::bool_comparison)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_comparison
[INFO] [stderr] 
[INFO] [stderr] warning: trivial regex
[INFO] [stderr]   --> src/day4/mod.rs:34:52
[INFO] [stderr]    |
[INFO] [stderr] 34 |       static ref REFallsAsleep: Regex = Regex::new(r"falls asleep").unwrap();
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivial_regex)] on by default
[INFO] [stderr]    = help: consider using `str::contains`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivial_regex
[INFO] [stderr] 
[INFO] [stderr] warning: trivial regex
[INFO] [stderr]   --> src/day4/mod.rs:35:48
[INFO] [stderr]    |
[INFO] [stderr] 35 |       static ref REWakesUp: Regex = Regex::new(r"wakes up").unwrap();
[INFO] [stderr]    |                                                ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using `str::contains`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivial_regex
[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/day4/mod.rs:106:35
[INFO] [stderr]     |
[INFO] [stderr] 106 | fn get_sleeping_patterns(records: &Vec<Record>) -> BTreeMap<(u32, u32), u32> {
[INFO] [stderr]     |                                   ^^^^^^^^^^^^ help: change this to: `&[Record]`
[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: manual implementation of an assign operation
[INFO] [stderr]    --> src/day4/mod.rs:137:33
[INFO] [stderr]     |
[INFO] [stderr] 137 |       .and_modify(|v: &mut u32| *v = *v + *value)
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^ help: replace it with: `*v += *value`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/day6/mod.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 |   let mut split = s.split(",");
[INFO] [stderr]    |                           ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[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/day6/mod.rs:32:44
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn find_closest_point(q: Location, points: &Vec<Coords>) -> (Option<Coords>, i32) {
[INFO] [stderr]    |                                            ^^^^^^^^^^^^ help: change this to: `&[Coords]`
[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/day6/mod.rs:49:40
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn calculate_closest_point_map(coords: &Vec<Coords>, start: Location, end: Location) -> BTreeMap<Location, (Option<Coords>, i32)> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: change this to: `&[Coords]`
[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/day7/common.rs:41:25
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub fn find_root(rules: &Vec<Rule>) -> Vec<char> {
[INFO] [stderr]    |                         ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/common.rs:55:37
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn all_dependencies_done(rules: &Vec<Rule>, task: char, done: &Vec<char>) -> bool {
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/common.rs:55:67
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn all_dependencies_done(rules: &Vec<Rule>, task: char, done: &Vec<char>) -> bool {
[INFO] [stderr]    |                                                                   ^^^^^^^^^^ help: change this to: `&[char]`
[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/day7/problem1.rs:4:27
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn find_next_steps(rules: &Vec<Rule>, task: char, done: &Vec<char>) -> Vec<char> {
[INFO] [stderr]   |                           ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem1.rs:4:57
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn find_next_steps(rules: &Vec<Rule>, task: char, done: &Vec<char>) -> Vec<char> {
[INFO] [stderr]   |                                                         ^^^^^^^^^^ help: change this to: `&[char]`
[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/day7/problem1.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn find_next_letters(rules: &Vec<Rule>, letters: &mut Vec<char>, done: &mut Vec<char>) -> Vec<char> {
[INFO] [stderr]    |                             ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem1.rs:31:24
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn traverse(rules: &Vec<Rule>, letters: &mut Vec<char>, already_visited: &mut Vec<char>) {
[INFO] [stderr]    |                        ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem2.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn find_open_tasks(rules: &Vec<Rule>, done: &Vec<char>, in_work: &Vec<char>) -> BTreeSet<char> {
[INFO] [stderr]    |                           ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem2.rs:10:45
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn find_open_tasks(rules: &Vec<Rule>, done: &Vec<char>, in_work: &Vec<char>) -> BTreeSet<char> {
[INFO] [stderr]    |                                             ^^^^^^^^^^ help: change this to: `&[char]`
[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/day7/problem2.rs:10:66
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn find_open_tasks(rules: &Vec<Rule>, done: &Vec<char>, in_work: &Vec<char>) -> BTreeSet<char> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^ help: change this to: `&[char]`
[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/day7/problem2.rs:31:34
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub fn all_workers_idle(workers: &Vec<Option<Slot>>) -> bool {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^ help: change this to: `&[Option<Slot>]`
[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/day7/problem2.rs:35:30
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn fetch_new_task(rules: &Vec<Rule>, done: &Vec<char>, in_work: &mut Vec<char>) -> Option<Slot> {
[INFO] [stderr]    |                              ^^^^^^^^^^ help: change this to: `&[Rule]`
[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/day7/problem2.rs:35:48
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn fetch_new_task(rules: &Vec<Rule>, done: &Vec<char>, in_work: &mut Vec<char>) -> Option<Slot> {
[INFO] [stderr]    |                                                ^^^^^^^^^^ help: change this to: `&[char]`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/day9/mod.rs:39:17
[INFO] [stderr]    |
[INFO] [stderr] 39 |   for marble in 1..(last_marble+1) {
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ help: use: `1..=last_marble`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[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/day10/mod.rs:45:25
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn bounding_box(lights: &Vec<Light>) -> ((i32, i32), (i32, i32)) {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: change this to: `&[Light]`
[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/day10/mod.rs:69:25
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn print_lights(lights: &Vec<Light>, size: (i32, i32), min: (i32, i32)) {
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: change this to: `&[Light]`
[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: an inclusive range would be more readable
[INFO] [stderr]   --> src/day10/mod.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 72 |   for _i in 0..(size.1 + 1) {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: use: `0..=size.1`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[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/day10/mod.rs:92:30
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn bounding_box_size(lights: &Vec<Light>) -> (i32, i32) {
[INFO] [stderr]    |                              ^^^^^^^^^^^ help: change this to: `&[Light]`
[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/day11/mod.rs:36:29
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn power_level_square(grid: &Vec<i32>, top_left: (usize, usize)) -> 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/day11/mod.rs:71:21
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn get_column(grid: &Vec<i32>, top_left: (usize, usize), size: usize) -> 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/day11/mod.rs:83:18
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn get_row(grid: &Vec<i32>, top_left: (usize, usize), size: usize) -> 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 creates an owned instance just for comparison
[INFO] [stderr]   --> src/day12/mod.rs:19:21
[INFO] [stderr]    |
[INFO] [stderr] 19 |       if extract == key.to_string() {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^ help: try: `*key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cmp_owned)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cmp_owned
[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/day12/mod.rs:29:16
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn checksum(v: &Vec<char>) -> usize {
[INFO] [stderr]    |                ^^^^^^^^^^ help: change this to: `&[char]`
[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/day13/mod.rs:53:30
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn drive(cart: Cart, tracks: &Vec<Vec<char>>) -> Cart {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^ help: change this to: `&[Vec<char>]`
[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/day13/mod.rs:81:23
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn find_carts(tracks: &Vec<Vec<char>>) -> Vec<Cart> {
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^ help: change this to: `&[Vec<char>]`
[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/day13/mod.rs:95:26
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn find_collision(carts: &Vec<Cart>) -> Vec<usize> {
[INFO] [stderr]    |                          ^^^^^^^^^^ help: change this to: `&[Cart]`
[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: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/day13/mod.rs:106:8
[INFO] [stderr]     |
[INFO] [stderr] 106 |       .or_insert(vec![index]);
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![index])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/day13/mod.rs:124:33
[INFO] [stderr]     |
[INFO] [stderr] 124 |       let carts_copy: Vec<Cart> = carts
[INFO] [stderr]     |  _________________________________^
[INFO] [stderr] 125 | |       .iter()
[INFO] [stderr] 126 | |       .map(|v| v.clone())
[INFO] [stderr]     | |_________________________^
[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] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 124 |     let carts_copy: Vec<Cart> = carts
[INFO] [stderr] 125 |       .iter().cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/day13/mod.rs:138:16
[INFO] [stderr]     |
[INFO] [stderr] 138 |             if collided.len() > 0 {
[INFO] [stderr]     |                ^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!collided.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/day13/mod.rs:152:23
[INFO] [stderr]     |
[INFO] [stderr] 152 | fn print_carts(carts: &Vec<Cart>) {
[INFO] [stderr]     |                       ^^^^^^^^^^ help: change this to: `&[Cart]`
[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/day13/mod.rs:196:8
[INFO] [stderr]     |
[INFO] [stderr] 196 |     if unbroken_carts.len() == 0 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `unbroken_carts.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/day15/cave.rs:35:70
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn print_units_onto_board(printed_board: &mut Vec<Vec<char>>, units: &Vec<Unit>) {
[INFO] [stderr]    |                                                                      ^^^^^^^^^^ help: change this to: `&[Unit]`
[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/day15/cave.rs:45:23
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn print_state(state: &Vec<Vec<char>>) {
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^ help: change this to: `&[Vec<char>]`
[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/day15/cave.rs:52:34
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn print_state_with_stats(state: &Vec<Vec<char>>, units: &Vec<Unit>) {
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^ help: change this to: `&[Vec<char>]`
[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/day15/cave.rs:52:58
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn print_state_with_stats(state: &Vec<Vec<char>>, units: &Vec<Unit>) {
[INFO] [stderr]    |                                                          ^^^^^^^^^^ help: change this to: `&[Unit]`
[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 seem to want to iterate on a map's keys
[INFO] [stderr]   --> src/day15/unit.rs:50:23
[INFO] [stderr]    |
[INFO] [stderr] 50 |       for (pos, _) in &result {
[INFO] [stderr]    |                       ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::for_kv_map)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#for_kv_map
[INFO] [stderr] help: use the corresponding method
[INFO] [stderr]    |
[INFO] [stderr] 50 |       for pos in result.keys() {
[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/day15/unit.rs:113:47
[INFO] [stderr]     |
[INFO] [stderr] 113 |   fn find_closest_positions(target_positions: &Vec<Position>, distance_map: &BTreeMap<Position, u32>) -> (Vec<Position>, u32) {
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^^ help: change this to: `&[Position]`
[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: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/day15/unit.rs:125:10
[INFO] [stderr]     |
[INFO] [stderr] 125 |         .or_insert(vec![pos.clone()]);
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![pos.clone()])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/day15/unit.rs:125:25
[INFO] [stderr]     |
[INFO] [stderr] 125 |         .or_insert(vec![pos.clone()]);
[INFO] [stderr]     |                         ^^^^^^^^^^^ help: try dereferencing it: `*pos`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/day15/unit.rs:216:10
[INFO] [stderr]     |
[INFO] [stderr] 216 |         .or_insert(vec![entry]);
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![entry])`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]  --> src/day16/ops.rs:6:20
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn op_map() -> BTreeMap<&'static str, &'static Fn(State, i32, i32, i32) -> Option<State>> {
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[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/day16/problems.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn intersect(a: &Vec<&'static str>, b: &Vec<&'static str>) -> Vec<&'static str> {
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^ help: change this to: `&[&'static 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/day16/problems.rs:67:40
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn intersect(a: &Vec<&'static str>, b: &Vec<&'static str>) -> Vec<&'static str> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^ help: change this to: `&[&'static 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: trivial regex
[INFO] [stderr]   --> src/day16/problems.rs:84:46
[INFO] [stderr]    |
[INFO] [stderr] 84 |     static ref RE_before: Regex = Regex::new(r"Before:").unwrap();
[INFO] [stderr]    |                                              ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using `str::contains`
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivial_regex
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `k` is used to index `opcode_map`
[INFO] [stderr]    --> src/day16/problems.rs:138:16
[INFO] [stderr]     |
[INFO] [stderr] 138 |       for k in 0..opcode_map.len() {
[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] 138 |       for (k, <item>) in opcode_map.iter_mut().enumerate() {
[INFO] [stderr]     |           ^^^^^^^^^^^    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/utils/mod.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     .split("\n")
[INFO] [stderr]    |            ^^^^ help: try using a char instead: `'\n'`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/main.rs:77:3
[INFO] [stderr]    |
[INFO] [stderr] 77 | /   match run() {
[INFO] [stderr] 78 | |     Err(err) => println!("Error occurred: {}", err),
[INFO] [stderr] 79 | |     _ => {}
[INFO] [stderr] 80 | |   }
[INFO] [stderr]    | |___^ help: try this: `if let Err(err) = run() { println!("Error occurred: {}", err) }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `"docker" "inspect" "bc84619b57908caca6aeb1f5d0163b333d6eadd4f01dda9e980d0cef7fe817df"`
[INFO] running `"docker" "rm" "-f" "bc84619b57908caca6aeb1f5d0163b333d6eadd4f01dda9e980d0cef7fe817df"`
[INFO] [stdout] bc84619b57908caca6aeb1f5d0163b333d6eadd4f01dda9e980d0cef7fe817df