[INFO] updating cached repository darrenburns/adventofcode2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/darrenburns/adventofcode2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/darrenburns/adventofcode2018" "work/ex/clippy-test-run/sources/stable/gh/darrenburns/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/darrenburns/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/darrenburns/adventofcode2018" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/darrenburns/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/darrenburns/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 629e9239b5b203c82056b3abe4587f06f7a7a9ad
[INFO] sha for GitHub repo darrenburns/adventofcode2018: 629e9239b5b203c82056b3abe4587f06f7a7a9ad
[INFO] validating manifest of darrenburns/adventofcode2018 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of darrenburns/adventofcode2018 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing darrenburns/adventofcode2018
[INFO] finished frobbing darrenburns/adventofcode2018
[INFO] frobbed toml for darrenburns/adventofcode2018 written to work/ex/clippy-test-run/sources/stable/gh/darrenburns/adventofcode2018/Cargo.toml
[INFO] started frobbing darrenburns/adventofcode2018
[INFO] finished frobbing darrenburns/adventofcode2018
[INFO] frobbed toml for darrenburns/adventofcode2018 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/darrenburns/adventofcode2018/Cargo.toml
[INFO] crate darrenburns/adventofcode2018 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting darrenburns/adventofcode2018 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/darrenburns/adventofcode2018:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bce782f126da97f9fae8f2d64fa1d8b3cc69ea094f05a9eadef44b068376d308
[INFO] running `"docker" "start" "-a" "bce782f126da97f9fae8f2d64fa1d8b3cc69ea094f05a9eadef44b068376d308"`
[INFO] [stderr]     Checking adventofcode2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]  --> src/five.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 | const POLYMER_FILE: &'static str = "src/files/five/polymer.txt";
[INFO] [stderr]   |                     -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]  --> src/five.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | const UNITS: &'static str = "abcdefghijklmnopqrstuvwxyz";
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   |              -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]  --> src/five.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr]   |
[INFO] [stderr] 5 | const POLYMER_FILE: &'static str = "src/files/five/polymer.txt";
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr]   |                     -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr] 
[INFO] [stderr]   |
[INFO] [stderr] warning: unused import: `core::borrow::Borrow`
[INFO] [stderr]   = note: #[warn(clippy::const_static_lifetime)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]  --> src/five.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | const UNITS: &'static str = "abcdefghijklmnopqrstuvwxyz";
[INFO] [stderr]   |              -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::borrow::Borrow`
[INFO] [stderr]  --> src/six.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core::borrow::Borrow;
[INFO] [stderr]  --> src/six.rs:1:5
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 1 | use core::borrow::Borrow;
[INFO] [stderr] 
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] warning: unused import: `core::borrow::BorrowMut`
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]  --> src/six.rs:2:5
[INFO] [stderr] warning: unused import: `core::borrow::BorrowMut`
[INFO] [stderr]  --> src/six.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr]   |
[INFO] [stderr] 2 | use core::borrow::BorrowMut;
[INFO] [stderr] 2 | use core::borrow::BorrowMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/six.rs:13:21
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]    |
[INFO] [stderr]   --> src/six.rs:13:21
[INFO] [stderr] 13 | const COORDS_FILE: &'static str = "src/files/six/coords.txt";
[INFO] [stderr]    |
[INFO] [stderr]    |                    -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr] 13 | const COORDS_FILE: &'static str = "src/files/six/coords.txt";
[INFO] [stderr]    |
[INFO] [stderr]    |                    -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/six.rs:137:21
[INFO] [stderr]     |
[INFO] [stderr] 137 |                     manhattan_sum_this_cell
[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/six.rs:133:51
[INFO] [stderr]     |
[INFO] [stderr] 133 |                       let manhattan_sum_this_cell = points.iter()
[INFO] [stderr]     |  ___________________________________________________^
[INFO] [stderr] 134 | |                         .fold(0, |manhattan_sum, point|
[INFO] [stderr] 135 | |                             manhattan_sum + manhattan_distance(&point, row_idx, col_idx),
[INFO] [stderr] 136 | |                         );
[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: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/seven.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stderr]  --> src/seven.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::BinaryHeap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/seven.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | const INSTRUCTIONS_FILE: &'static str = "src/files/seven/instructions.txt";
[INFO] [stderr]    |                          -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/seven.rs:11:18
[INFO] [stderr]    |
[INFO] [stderr] 11 | const ALPHABET: &'static str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
[INFO] [stderr]    |                 -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]  --> src/eight.rs:3:19
[INFO] [stderr]   |
[INFO] [stderr] 3 | const TREE_FILE: &'static str = "src/files/eight/tree.txt";
[INFO] [stderr]   |                  -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufReader`
[INFO] [stderr]  --> src/ten.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::BufReader;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/ten.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufRead`
[INFO] [stderr]  --> src/ten.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::BufRead;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]  --> src/ten.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 | const PATH_TO_INPUT: &'static str = "src/files/ten/example.txt";
[INFO] [stderr]   |                      -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/six.rs:137:21
[INFO] [stderr]     |
[INFO] [stderr] 137 |                     manhattan_sum_this_cell
[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/six.rs:133:51
[INFO] [stderr]     |
[INFO] [stderr] 133 |                       let manhattan_sum_this_cell = points.iter()
[INFO] [stderr]     |  ___________________________________________________^
[INFO] [stderr] 134 | |                         .fold(0, |manhattan_sum, point|
[INFO] [stderr] 135 | |                             manhattan_sum + manhattan_distance(&point, row_idx, col_idx),
[INFO] [stderr] 136 | |                         );
[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: unused import: `std::cmp::Ordering`
[INFO] [stderr]  --> src/seven.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::cmp::Ordering;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stderr]  --> src/seven.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::BinaryHeap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/seven.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | const INSTRUCTIONS_FILE: &'static str = "src/files/seven/instructions.txt";
[INFO] [stderr]    |                          -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]   --> src/seven.rs:11:18
[INFO] [stderr]    |
[INFO] [stderr] 11 | const ALPHABET: &'static str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
[INFO] [stderr]    |                 -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]  --> src/eight.rs:3:19
[INFO] [stderr]   |
[INFO] [stderr] 3 | const TREE_FILE: &'static str = "src/files/eight/tree.txt";
[INFO] [stderr]   |                  -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufReader`
[INFO] [stderr]  --> src/ten.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::BufReader;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/ten.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufRead`
[INFO] [stderr]  --> src/ten.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::BufRead;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: Constants have by default a `'static` lifetime
[INFO] [stderr]  --> src/ten.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 | const PATH_TO_INPUT: &'static str = "src/files/ten/example.txt";
[INFO] [stderr]   |                      -^^^^^^^---- help: consider removing `'static`: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#const_static_lifetime
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/four.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 |             _ => ()
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gid`
[INFO] [stderr]   --> src/four.rs:60:10
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let (gid, _, most_popular_minute, _) = sleepiest_guard.unwrap();
[INFO] [stderr]    |          ^^^ help: consider using `_gid` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `most_popular_minute`
[INFO] [stderr]   --> src/four.rs:60:18
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let (gid, _, most_popular_minute, _) = sleepiest_guard.unwrap();
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^ help: consider using `_most_popular_minute` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `point_id`
[INFO] [stderr]   --> src/six.rs:89:10
[INFO] [stderr]    |
[INFO] [stderr] 89 |     let (point_id, &area_of_territory) = grid.iter()
[INFO] [stderr]    |          ^^^^^^^^ help: consider using `_point_id` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cell`
[INFO] [stderr]    --> src/six.rs:132:33
[INFO] [stderr]     |
[INFO] [stderr] 132 |                 .map(|(col_idx, cell)| {
[INFO] [stderr]     |                                 ^^^^ help: consider using `_cell` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cell`
[INFO] [stderr]    --> src/six.rs:229:41
[INFO] [stderr]     |
[INFO] [stderr] 229 |                 .filter(move |(col_idx, cell)| {
[INFO] [stderr]     |                                         ^^^^ help: consider using `_cell` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col_idx`
[INFO] [stderr]    --> src/six.rs:234:27
[INFO] [stderr]     |
[INFO] [stderr] 234 |                 .filter(|(col_idx, cell)| {
[INFO] [stderr]     |                           ^^^^^^^ help: consider using `_col_idx` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col_idx`
[INFO] [stderr]    --> src/six.rs:241:24
[INFO] [stderr]     |
[INFO] [stderr] 241 |                 .map(|(col_idx, cell)| {
[INFO] [stderr]     |                        ^^^^^^^ help: consider using `_col_idx` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos_x`
[INFO] [stderr]   --> src/ten.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let pos_x = iter.skip_while(|&c| c != '<')
[INFO] [stderr]    |             ^^^^^ help: consider using `_pos_x` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/four.rs:43:13
[INFO] [stderr]    |
[INFO] [stderr] 43 |             _ => ()
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gid`
[INFO] [stderr]   --> src/four.rs:60:10
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let (gid, _, most_popular_minute, _) = sleepiest_guard.unwrap();
[INFO] [stderr]    |          ^^^ help: consider using `_gid` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `most_popular_minute`
[INFO] [stderr]   --> src/four.rs:60:18
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let (gid, _, most_popular_minute, _) = sleepiest_guard.unwrap();
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^ help: consider using `_most_popular_minute` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `point_id`
[INFO] [stderr]   --> src/six.rs:89:10
[INFO] [stderr]    |
[INFO] [stderr] 89 |     let (point_id, &area_of_territory) = grid.iter()
[INFO] [stderr]    |          ^^^^^^^^ help: consider using `_point_id` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cell`
[INFO] [stderr]    --> src/six.rs:132:33
[INFO] [stderr]     |
[INFO] [stderr] 132 |                 .map(|(col_idx, cell)| {
[INFO] [stderr]     |                                 ^^^^ help: consider using `_cell` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cell`
[INFO] [stderr]    --> src/six.rs:229:41
[INFO] [stderr]     |
[INFO] [stderr] 229 |                 .filter(move |(col_idx, cell)| {
[INFO] [stderr]     |                                         ^^^^ help: consider using `_cell` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col_idx`
[INFO] [stderr]    --> src/six.rs:234:27
[INFO] [stderr]     |
[INFO] [stderr] 234 |                 .filter(|(col_idx, cell)| {
[INFO] [stderr]     |                           ^^^^^^^ help: consider using `_col_idx` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col_idx`
[INFO] [stderr]    --> src/six.rs:241:24
[INFO] [stderr]     |
[INFO] [stderr] 241 |                 .map(|(col_idx, cell)| {
[INFO] [stderr]     |                        ^^^^^^^ help: consider using `_col_idx` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos_x`
[INFO] [stderr]   --> src/ten.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let pos_x = iter.skip_while(|&c| c != '<')
[INFO] [stderr]    |             ^^^^^ help: consider using `_pos_x` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/three.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let mut split_line = line.split_whitespace();
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/three.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |     let mut split_line = line.split_whitespace();
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/six.rs:188:17
[INFO] [stderr]     |
[INFO] [stderr] 188 |             let mut distances = points.iter()
[INFO] [stderr]     |                 ----^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/six.rs:188:17
[INFO] [stderr]     |
[INFO] [stderr] 188 |             let mut distances = points.iter()
[INFO] [stderr]     |                 ----^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_frequency`
[INFO] [stderr]  --> src/one.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn calculate_frequency() -> Result<i32> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_repeated_frequency`
[INFO] [stderr]   --> src/one.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn first_repeated_frequency() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `RepeatCounts`
[INFO] [stderr]  --> src/two.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct RepeatCounts {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_checksum`
[INFO] [stderr]   --> src/two.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn calculate_checksum() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_common_letters`
[INFO] [stderr]   --> src/two.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn find_common_letters() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `has_single_char_difference`
[INFO] [stderr]   --> src/two.rs:73:1
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn has_single_char_difference(left: &str, right: &str) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_common_chars`
[INFO] [stderr]   --> src/two.rs:92:1
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn get_common_chars(left: &str, right: &str) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Tiles`
[INFO] [stderr]  --> src/three.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | type Tiles = Vec<Vec<i32>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Location`
[INFO] [stderr]  --> src/three.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct Location {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Dimension`
[INFO] [stderr]   --> src/three.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | struct Dimension {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Claim`
[INFO] [stderr]   --> src/three.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | struct Claim {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_num_square_inches_overlapping`
[INFO] [stderr]   --> src/three.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn find_num_square_inches_overlapping() -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialise_claim`
[INFO] [stderr]   --> src/three.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn deserialise_claim(line: &str) -> Claim {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_layer_to_tiles`
[INFO] [stderr]   --> src/three.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn add_layer_to_tiles(tiles: &mut Tiles, claim: &Claim) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `count_overlaps`
[INFO] [stderr]    --> src/three.rs:105:1
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn count_overlaps(tiles: &Tiles) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `END_OF_TIMESTAMP_INDEX`
[INFO] [stderr]  --> src/four.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | const END_OF_TIMESTAMP_INDEX: usize = 19;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `checksum`
[INFO] [stderr]   --> src/four.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn checksum() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `POLYMER_FILE`
[INFO] [stderr]  --> src/five.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | const POLYMER_FILE: &'static str = "src/files/five/polymer.txt";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `UNITS`
[INFO] [stderr]  --> src/five.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const UNITS: &'static str = "abcdefghijklmnopqrstuvwxyz";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `length_of_final_string`
[INFO] [stderr]  --> src/five.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn length_of_final_string() -> usize {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `react`
[INFO] [stderr]   --> src/five.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn react(polymer: String) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `react_filtered`
[INFO] [stderr]   --> src/five.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn react_filtered(polymer: &String, skip: char) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `polar_opposites`
[INFO] [stderr]   --> src/five.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn polar_opposites(a: char, b: char) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `react_with_unit`
[INFO] [stderr]   --> src/five.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn react_with_unit(polymer: &mut String, unit: char) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `COORDS_FILE`
[INFO] [stderr]   --> src/six.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | const COORDS_FILE: &'static str = "src/files/six/coords.txt";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MANHATTAN_LIMIT`
[INFO] [stderr]   --> src/six.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | const MANHATTAN_LIMIT: i32 = 10000;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Grid`
[INFO] [stderr]   --> src/six.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | type Grid = Vec<Vec<GridCell>>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Border`
[INFO] [stderr]   --> src/six.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Border,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TerritoryOfPoint`
[INFO] [stderr]   --> src/six.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     TerritoryOfPoint { point_id: String },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Empty`
[INFO] [stderr]   --> src/six.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Empty,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `in_territory_of`
[INFO] [stderr]   --> src/six.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn in_territory_of(point_id: String) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `id`
[INFO] [stderr]   --> src/six.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn id(&self) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_territory_id`
[INFO] [stderr]   --> src/six.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn get_territory_id(&self) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `row`
[INFO] [stderr]   --> src/six.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn row(&self) -> Option<usize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `col`
[INFO] [stderr]   --> src/six.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn col(&self) -> Option<usize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_largest_area`
[INFO] [stderr]   --> src/six.rs:84:1
[INFO] [stderr]    |
[INFO] [stderr] 84 | pub fn get_largest_area() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_region`
[INFO] [stderr]    --> src/six.rs:119:1
[INFO] [stderr]     |
[INFO] [stderr] 119 | pub fn find_region() -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_grid`
[INFO] [stderr]    --> src/six.rs:146:1
[INFO] [stderr]     |
[INFO] [stderr] 146 | fn build_grid(points: &Vec<GridCell>) -> Grid {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `load_points_from_coords_file`
[INFO] [stderr]    --> src/six.rs:163:1
[INFO] [stderr]     |
[INFO] [stderr] 163 | fn load_points_from_coords_file() -> Vec<GridCell> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fill_grid_with`
[INFO] [stderr]    --> src/six.rs:171:1
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn fill_grid_with(points: &Vec<GridCell>, height: usize, width: usize) -> Grid {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `populate_closest_points`
[INFO] [stderr]    --> src/six.rs:183:1
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn populate_closest_points(points: &Vec<GridCell>, grid: &mut Grid) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `points_with_infinite_territory`
[INFO] [stderr]    --> src/six.rs:218:1
[INFO] [stderr]     |
[INFO] [stderr] 218 | fn points_with_infinite_territory(grid: &Grid) -> HashSet<String> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `manhattan_distance`
[INFO] [stderr]    --> src/six.rs:252:1
[INFO] [stderr]     |
[INFO] [stderr] 252 | fn manhattan_distance(point: &GridCell, target_row: usize, target_col: usize) -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INSTRUCTIONS_FILE`
[INFO] [stderr]   --> src/seven.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | const INSTRUCTIONS_FILE: &'static str = "src/files/seven/instructions.txt";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ALPHABET`
[INFO] [stderr]   --> src/seven.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const ALPHABET: &'static str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_instruction_ordering`
[INFO] [stderr]   --> src/seven.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn get_instruction_ordering() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_next_non_blocked`
[INFO] [stderr]    --> src/seven.rs:91:1
[INFO] [stderr]     |
[INFO] [stderr] 91  | / fn get_next_non_blocked(
[INFO] [stderr] 92  | |     is_blocked_by: &HashMap<char, Vec<char>>,
[INFO] [stderr] 93  | |     steps_seen: &HashSet<char>,
[INFO] [stderr] 94  | | ) -> char {
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |         .expect("Unable to find a step without any blockers.")
[INFO] [stderr] 100 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_dependencies_from_file`
[INFO] [stderr]    --> src/seven.rs:102:1
[INFO] [stderr]     |
[INFO] [stderr] 102 | fn get_dependencies_from_file() -> Vec<Dependency> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_metadata`
[INFO] [stderr]   --> src/eight.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn sum_metadata(node: &Node) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_sum`
[INFO] [stderr]   --> src/eight.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn calculate_sum() -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `NUM_PLAYERS`
[INFO] [stderr]  --> src/nine.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | const NUM_PLAYERS: usize = 432;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LAST_MARBLE_VALUE`
[INFO] [stderr]  --> src/nine.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | const LAST_MARBLE_VALUE: usize = 71019;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `winning_elf_score`
[INFO] [stderr]  --> src/nine.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn winning_elf_score() -> usize {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PATH_TO_INPUT`
[INFO] [stderr]  --> src/ten.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const PATH_TO_INPUT: &'static str = "src/files/ten/example.txt";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PointInSky`
[INFO] [stderr]  --> src/ten.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum PointInSky {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_frequency`
[INFO] [stderr]  --> src/one.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn calculate_frequency() -> Result<i32> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `first_repeated_frequency`
[INFO] [stderr]   --> src/one.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn first_repeated_frequency() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `RepeatCounts`
[INFO] [stderr]  --> src/two.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct RepeatCounts {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_checksum`
[INFO] [stderr]   --> src/two.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn calculate_checksum() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_common_letters`
[INFO] [stderr]   --> src/two.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn find_common_letters() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `has_single_char_difference`
[INFO] [stderr]   --> src/two.rs:73:1
[INFO] [stderr]    |
[INFO] [stderr] 73 | fn has_single_char_difference(left: &str, right: &str) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_common_chars`
[INFO] [stderr]   --> src/two.rs:92:1
[INFO] [stderr]    |
[INFO] [stderr] 92 | fn get_common_chars(left: &str, right: &str) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Tiles`
[INFO] [stderr]  --> src/three.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | type Tiles = Vec<Vec<i32>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Location`
[INFO] [stderr]  --> src/three.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct Location {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Dimension`
[INFO] [stderr]   --> src/three.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | struct Dimension {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Claim`
[INFO] [stderr]   --> src/three.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | struct Claim {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_num_square_inches_overlapping`
[INFO] [stderr]   --> src/three.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn find_num_square_inches_overlapping() -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialise_claim`
[INFO] [stderr]   --> src/three.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn deserialise_claim(line: &str) -> Claim {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_layer_to_tiles`
[INFO] [stderr]   --> src/three.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn add_layer_to_tiles(tiles: &mut Tiles, claim: &Claim) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `count_overlaps`
[INFO] [stderr]    --> src/three.rs:105:1
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn count_overlaps(tiles: &Tiles) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `END_OF_TIMESTAMP_INDEX`
[INFO] [stderr]  --> src/four.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | const END_OF_TIMESTAMP_INDEX: usize = 19;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `checksum`
[INFO] [stderr]   --> src/four.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn checksum() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `POLYMER_FILE`
[INFO] [stderr]  --> src/five.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | const POLYMER_FILE: &'static str = "src/files/five/polymer.txt";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `UNITS`
[INFO] [stderr]  --> src/five.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const UNITS: &'static str = "abcdefghijklmnopqrstuvwxyz";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `length_of_final_string`
[INFO] [stderr]  --> src/five.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn length_of_final_string() -> usize {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `react`
[INFO] [stderr]   --> src/five.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn react(polymer: String) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `react_filtered`
[INFO] [stderr]   --> src/five.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn react_filtered(polymer: &String, skip: char) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `polar_opposites`
[INFO] [stderr]   --> src/five.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn polar_opposites(a: char, b: char) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `react_with_unit`
[INFO] [stderr]   --> src/five.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn react_with_unit(polymer: &mut String, unit: char) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `COORDS_FILE`
[INFO] [stderr]   --> src/six.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | const COORDS_FILE: &'static str = "src/files/six/coords.txt";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MANHATTAN_LIMIT`
[INFO] [stderr]   --> src/six.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | const MANHATTAN_LIMIT: i32 = 10000;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Grid`
[INFO] [stderr]   --> src/six.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | type Grid = Vec<Vec<GridCell>>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Border`
[INFO] [stderr]   --> src/six.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Border,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `TerritoryOfPoint`
[INFO] [stderr]   --> src/six.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     TerritoryOfPoint { point_id: String },
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Empty`
[INFO] [stderr]   --> src/six.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     Empty,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `in_territory_of`
[INFO] [stderr]   --> src/six.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn in_territory_of(point_id: String) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `id`
[INFO] [stderr]   --> src/six.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn id(&self) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_territory_id`
[INFO] [stderr]   --> src/six.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn get_territory_id(&self) -> Option<String> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `row`
[INFO] [stderr]   --> src/six.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn row(&self) -> Option<usize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `col`
[INFO] [stderr]   --> src/six.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn col(&self) -> Option<usize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_largest_area`
[INFO] [stderr]   --> src/six.rs:84:1
[INFO] [stderr]    |
[INFO] [stderr] 84 | pub fn get_largest_area() -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_region`
[INFO] [stderr]    --> src/six.rs:119:1
[INFO] [stderr]     |
[INFO] [stderr] 119 | pub fn find_region() -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `build_grid`
[INFO] [stderr]    --> src/six.rs:146:1
[INFO] [stderr]     |
[INFO] [stderr] 146 | fn build_grid(points: &Vec<GridCell>) -> Grid {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `load_points_from_coords_file`
[INFO] [stderr]    --> src/six.rs:163:1
[INFO] [stderr]     |
[INFO] [stderr] 163 | fn load_points_from_coords_file() -> Vec<GridCell> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fill_grid_with`
[INFO] [stderr]    --> src/six.rs:171:1
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn fill_grid_with(points: &Vec<GridCell>, height: usize, width: usize) -> Grid {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `populate_closest_points`
[INFO] [stderr]    --> src/six.rs:183:1
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn populate_closest_points(points: &Vec<GridCell>, grid: &mut Grid) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `points_with_infinite_territory`
[INFO] [stderr]    --> src/six.rs:218:1
[INFO] [stderr]     |
[INFO] [stderr] 218 | fn points_with_infinite_territory(grid: &Grid) -> HashSet<String> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `manhattan_distance`
[INFO] [stderr]    --> src/six.rs:252:1
[INFO] [stderr]     |
[INFO] [stderr] 252 | fn manhattan_distance(point: &GridCell, target_row: usize, target_col: usize) -> i32 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `INSTRUCTIONS_FILE`
[INFO] [stderr]   --> src/seven.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | const INSTRUCTIONS_FILE: &'static str = "src/files/seven/instructions.txt";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ALPHABET`
[INFO] [stderr]   --> src/seven.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | const ALPHABET: &'static str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_instruction_ordering`
[INFO] [stderr]   --> src/seven.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn get_instruction_ordering() -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_next_non_blocked`
[INFO] [stderr]    --> src/seven.rs:91:1
[INFO] [stderr]     |
[INFO] [stderr] 91  | / fn get_next_non_blocked(
[INFO] [stderr] 92  | |     is_blocked_by: &HashMap<char, Vec<char>>,
[INFO] [stderr] 93  | |     steps_seen: &HashSet<char>,
[INFO] [stderr] 94  | | ) -> char {
[INFO] [stderr] ...   |
[INFO] [stderr] 99  | |         .expect("Unable to find a step without any blockers.")
[INFO] [stderr] 100 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_dependencies_from_file`
[INFO] [stderr]    --> src/seven.rs:102:1
[INFO] [stderr]     |
[INFO] [stderr] 102 | fn get_dependencies_from_file() -> Vec<Dependency> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sum_metadata`
[INFO] [stderr]   --> src/eight.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn sum_metadata(node: &Node) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_sum`
[INFO] [stderr]   --> src/eight.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub fn calculate_sum() -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `NUM_PLAYERS`
[INFO] [stderr]  --> src/nine.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | const NUM_PLAYERS: usize = 432;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LAST_MARBLE_VALUE`
[INFO] [stderr]  --> src/nine.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | const LAST_MARBLE_VALUE: usize = 71019;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `winning_elf_score`
[INFO] [stderr]  --> src/nine.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn winning_elf_score() -> usize {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PATH_TO_INPUT`
[INFO] [stderr]  --> src/ten.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | const PATH_TO_INPUT: &'static str = "src/files/ten/example.txt";
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `PointInSky`
[INFO] [stderr]  --> src/ten.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | enum PointInSky {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/three.rs:51:23
[INFO] [stderr]    |
[INFO] [stderr] 51 |             let row = tiles.get_mut(row_idx as usize).unwrap();
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `tiles[row_idx as usize]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
[INFO] [stderr]   --> src/three.rs:74:32
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let raw_location_segment = split_line.clone().skip(2).next().unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::iter_skip_next)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/three.rs:76:49
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let mut location_split = raw_location.split(",");
[INFO] [stderr]    |                                                 ^^^ help: try using a char instead: `','`
[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: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
[INFO] [stderr]   --> src/three.rs:81:26
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let raw_dimensions = split_line.skip(3).next().unwrap();
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/three.rs:82:52
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let mut dimension_split = raw_dimensions.split("x");
[INFO] [stderr]    |                                                    ^^^ help: try using a char instead: `'x'`
[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: called `.get_mut().unwrap()` on a slice. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/three.rs:97:19
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let row = tiles.get_mut(row_idx as usize).unwrap();
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `tiles[row_idx as usize]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/three.rs:105:26
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn count_overlaps(tiles: &Tiles) -> usize {
[INFO] [stderr]     |                          ^^^^^^
[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: called `.get_mut().unwrap()` on a Vec. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/three.rs:51:23
[INFO] [stderr]    |
[INFO] [stderr] 51 |             let row = tiles.get_mut(row_idx as usize).unwrap();
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `tiles[row_idx as usize]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::get_unwrap)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]   --> src/four.rs:32:40
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 guards.entry(guard_id).or_insert(vec![0; 60]);
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![0; 60])`
[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: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
[INFO] [stderr]   --> src/three.rs:74:32
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let raw_location_segment = split_line.clone().skip(2).next().unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::iter_skip_next)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/three.rs:76:49
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let mut location_split = raw_location.split(",");
[INFO] [stderr]    |                                                 ^^^ help: try using a char instead: `','`
[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: called `skip(x).next()` on an iterator. This is more succinctly expressed by calling `nth(x)`
[INFO] [stderr]   --> src/three.rs:81:26
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let raw_dimensions = split_line.skip(3).next().unwrap();
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_skip_next
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/three.rs:82:52
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let mut dimension_split = raw_dimensions.split("x");
[INFO] [stderr]    |                                                    ^^^ help: try using a char instead: `'x'`
[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: called `.get_mut().unwrap()` on a slice. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/three.rs:97:19
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let row = tiles.get_mut(row_idx as usize).unwrap();
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `tiles[row_idx as usize]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/three.rs:105:26
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn count_overlaps(tiles: &Tiles) -> usize {
[INFO] [stderr]     |                          ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/five.rs:28:28
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn react_filtered(polymer: &String, skip: char) -> String {
[INFO] [stderr]    |                            ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]   --> src/four.rs:32:40
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 guards.entry(guard_id).or_insert(vec![0; 60]);
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![0; 60])`
[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: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/five.rs:28:28
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn react_filtered(polymer: &String, skip: char) -> String {
[INFO] [stderr]    |                            ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/six.rs:146:23
[INFO] [stderr]     |
[INFO] [stderr] 146 | fn build_grid(points: &Vec<GridCell>) -> Grid {
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^ help: change this to: `&[GridCell]`
[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/six.rs:171:27
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn fill_grid_with(points: &Vec<GridCell>, height: usize, width: usize) -> Grid {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: change this to: `&[GridCell]`
[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/six.rs:146:23
[INFO] [stderr]     |
[INFO] [stderr] 146 | fn build_grid(points: &Vec<GridCell>) -> Grid {
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^ help: change this to: `&[GridCell]`
[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/six.rs:183:36
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn populate_closest_points(points: &Vec<GridCell>, grid: &mut Grid) {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^ help: change this to: `&[GridCell]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `row_index` is only used to index `grid`.
[INFO] [stderr]    --> src/six.rs:184:22
[INFO] [stderr]     |
[INFO] [stderr] 184 |     for row_index in 0..grid.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] 184 |     for <item> in &mut grid {
[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/six.rs:171:27
[INFO] [stderr]     |
[INFO] [stderr] 171 | fn fill_grid_with(points: &Vec<GridCell>, height: usize, width: usize) -> Grid {
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^ help: change this to: `&[GridCell]`
[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/six.rs:218:41
[INFO] [stderr]     |
[INFO] [stderr] 218 | fn points_with_infinite_territory(grid: &Grid) -> HashSet<String> {
[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/six.rs:183:36
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn populate_closest_points(points: &Vec<GridCell>, grid: &mut Grid) {
[INFO] [stderr]     |                                    ^^^^^^^^^^^^^^ help: change this to: `&[GridCell]`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `row_index` is only used to index `grid`.
[INFO] [stderr]    --> src/six.rs:184:22
[INFO] [stderr]     |
[INFO] [stderr] 184 |     for row_index in 0..grid.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] 184 |     for <item> in &mut grid {
[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/six.rs:218:41
[INFO] [stderr]     |
[INFO] [stderr] 218 | fn points_with_infinite_territory(grid: &Grid) -> HashSet<String> {
[INFO] [stderr]     |                                         ^^^^^
[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/seven.rs:39:18
[INFO] [stderr]    |
[INFO] [stderr] 39 |                 .or_insert(vec![])
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![])`
[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: use of `or_insert` followed by a function call
[INFO] [stderr]   --> src/seven.rs:44:18
[INFO] [stderr]    |
[INFO] [stderr] 44 |                 .or_insert(vec![])
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![])`
[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: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/seven.rs:70:29
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let steps_blocked = is_blocking.get(&step).unwrap();
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&is_blocking[&step]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]   --> src/seven.rs:39:18
[INFO] [stderr]    |
[INFO] [stderr] 39 |                 .or_insert(vec![])
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![])`
[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: use of `or_insert` followed by a function call
[INFO] [stderr]   --> src/seven.rs:44:18
[INFO] [stderr]    |
[INFO] [stderr] 44 |                 .or_insert(vec![])
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(|| vec![])`
[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: called `.get().unwrap()` on a HashMap. Using `[]` is more clear and more concise
[INFO] [stderr]   --> src/seven.rs:70:29
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let steps_blocked = is_blocking.get(&step).unwrap();
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `&is_blocking[&step]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#get_unwrap
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.06s
[INFO] running `"docker" "inspect" "bce782f126da97f9fae8f2d64fa1d8b3cc69ea094f05a9eadef44b068376d308"`
[INFO] running `"docker" "rm" "-f" "bce782f126da97f9fae8f2d64fa1d8b3cc69ea094f05a9eadef44b068376d308"`
[INFO] [stdout] bce782f126da97f9fae8f2d64fa1d8b3cc69ea094f05a9eadef44b068376d308