[INFO] cloning repository https://github.com/darrenburns/adventofcode2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/darrenburns/adventofcode2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarrenburns%2Fadventofcode2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarrenburns%2Fadventofcode2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 59ad8479a9e48a33003f4f2d57599470e2a2e95a
[INFO] checking darrenburns/adventofcode2018 against master#f8f6997469237299c1d60814c7b9828602a1f8e4 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdarrenburns%2Fadventofcode2018" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/darrenburns/adventofcode2018
[INFO] finished tweaking git repo https://github.com/darrenburns/adventofcode2018
[INFO] tweaked toml for git repo https://github.com/darrenburns/adventofcode2018 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/darrenburns/adventofcode2018 on toolchain f8f6997469237299c1d60814c7b9828602a1f8e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/darrenburns/adventofcode2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1223fc36e36e3c1ba19bc3df00c6b0ca9ae5e9fc12c8ef27a5e8f71ee921be93
[INFO] running `Command { std: "docker" "start" "-a" "1223fc36e36e3c1ba19bc3df00c6b0ca9ae5e9fc12c8ef27a5e8f71ee921be93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1223fc36e36e3c1ba19bc3df00c6b0ca9ae5e9fc12c8ef27a5e8f71ee921be93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1223fc36e36e3c1ba19bc3df00c6b0ca9ae5e9fc12c8ef27a5e8f71ee921be93", kill_on_drop: false }`
[INFO] [stdout] 1223fc36e36e3c1ba19bc3df00c6b0ca9ae5e9fc12c8ef27a5e8f71ee921be93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+f8f6997469237299c1d60814c7b9828602a1f8e4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3df02a19251877dc01be42d49a704ff045380f1f1f70383b56e54ab39ee43077
[INFO] running `Command { std: "docker" "start" "-a" "3df02a19251877dc01be42d49a704ff045380f1f1f70383b56e54ab39ee43077", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking scan_fmt v0.1.3
[INFO] [stderr]     Checking adventofcode2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]  --> src/six.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::BorrowMut`
[INFO] [stdout]  --> src/six.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/seven.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> src/seven.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/ten.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/eleven.rs:34:31
[INFO] [stdout]    |
[INFO] [stdout] 34 |     for search_square_size in (0..GRID_SQUARE_SIZE) {
[INFO] [stdout]    |                               ^                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 34 -     for search_square_size in (0..GRID_SQUARE_SIZE) {
[INFO] [stdout] 34 +     for search_square_size in 0..GRID_SQUARE_SIZE {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::Borrow`
[INFO] [stdout]  --> src/six.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::borrow::BorrowMut`
[INFO] [stdout]  --> src/six.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/seven.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::BinaryHeap`
[INFO] [stdout]  --> src/seven.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::BinaryHeap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/ten.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/eleven.rs:34:31
[INFO] [stdout]    |
[INFO] [stdout] 34 |     for search_square_size in (0..GRID_SQUARE_SIZE) {
[INFO] [stdout]    |                               ^                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 34 -     for search_square_size in (0..GRID_SQUARE_SIZE) {
[INFO] [stdout] 34 +     for search_square_size in 0..GRID_SQUARE_SIZE {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/three.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let mut split_line = line.split_whitespace();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/three.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |     let mut split_line = line.split_whitespace();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/four.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             _ => ()
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/four.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             Act::StartShift => {
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 34 |             Act::FallAsleep => {
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 37 |             Act::WakeUp => {
[INFO] [stdout]    |             ----------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 43 |             _ => ()
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gid`
[INFO] [stdout]   --> src/four.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let (gid, _, most_popular_minute, _) = sleepiest_guard.unwrap();
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_gid`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `most_popular_minute`
[INFO] [stdout]   --> src/four.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let (gid, _, most_popular_minute, _) = sleepiest_guard.unwrap();
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_most_popular_minute`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/four.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             _ => ()
[INFO] [stdout]    |             ^ no value can reach this
[INFO] [stdout]    |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]   --> src/four.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             Act::StartShift => {
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 34 |             Act::FallAsleep => {
[INFO] [stdout]    |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 37 |             Act::WakeUp => {
[INFO] [stdout]    |             ----------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 43 |             _ => ()
[INFO] [stdout]    |             ^ collectively making this unreachable
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gid`
[INFO] [stdout]   --> src/four.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let (gid, _, most_popular_minute, _) = sleepiest_guard.unwrap();
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_gid`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `most_popular_minute`
[INFO] [stdout]   --> src/four.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let (gid, _, most_popular_minute, _) = sleepiest_guard.unwrap();
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_most_popular_minute`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_id`
[INFO] [stdout]   --> src/six.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let (point_id, &area_of_territory) = grid.iter()
[INFO] [stdout]    |          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cell`
[INFO] [stdout]    --> src/six.rs:132:33
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 .map(|(col_idx, cell)| {
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point_id`
[INFO] [stdout]   --> src/six.rs:89:10
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let (point_id, &area_of_territory) = grid.iter()
[INFO] [stdout]    |          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_point_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/six.rs:188:17
[INFO] [stdout]     |
[INFO] [stdout] 188 |             let mut distances = points.iter()
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cell`
[INFO] [stdout]    --> src/six.rs:229:41
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 .filter(move |(col_idx, cell)| {
[INFO] [stdout]     |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col_idx`
[INFO] [stdout]    --> src/six.rs:234:27
[INFO] [stdout]     |
[INFO] [stdout] 234 |                 .filter(|(col_idx, cell)| {
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_col_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col_idx`
[INFO] [stdout]    --> src/six.rs:241:24
[INFO] [stdout]     |
[INFO] [stdout] 241 |                 .map(|(col_idx, cell)| {
[INFO] [stdout]     |                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_col_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cell`
[INFO] [stdout]    --> src/six.rs:132:33
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 .map(|(col_idx, cell)| {
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/six.rs:188:17
[INFO] [stdout]     |
[INFO] [stdout] 188 |             let mut distances = points.iter()
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cell`
[INFO] [stdout]    --> src/six.rs:229:41
[INFO] [stdout]     |
[INFO] [stdout] 229 |                 .filter(move |(col_idx, cell)| {
[INFO] [stdout]     |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col_idx`
[INFO] [stdout]    --> src/six.rs:234:27
[INFO] [stdout]     |
[INFO] [stdout] 234 |                 .filter(|(col_idx, cell)| {
[INFO] [stdout]     |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_col_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `col_idx`
[INFO] [stdout]    --> src/six.rs:241:24
[INFO] [stdout]     |
[INFO] [stdout] 241 |                 .map(|(col_idx, cell)| {
[INFO] [stdout]     |                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_col_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ten.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut stars: Vec<Star> = BufReader::new(File::open(PATH_TO_INPUT).unwrap()).lines()
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ten.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut stars: Vec<Star> = BufReader::new(File::open(PATH_TO_INPUT).unwrap()).lines()
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/twelve.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut notes_map = lines.fold(HashMap::new(), |mut map, line| {
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pot_num`
[INFO] [stdout]   --> src/twelve.rs:49:20
[INFO] [stdout]    |
[INFO] [stdout] 49 |         .filter(|&(pot_num, ch)| ch == '#')
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pot_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_frequency` is never used
[INFO] [stdout]  --> src/one.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn calculate_frequency() -> Result<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_repeated_frequency` is never used
[INFO] [stdout]   --> src/one.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn first_repeated_frequency() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RepeatCounts` is never constructed
[INFO] [stdout]  --> src/two.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct RepeatCounts {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_checksum` is never used
[INFO] [stdout]   --> src/two.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn calculate_checksum() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_common_letters` is never used
[INFO] [stdout]   --> src/two.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn find_common_letters() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `has_single_char_difference` is never used
[INFO] [stdout]   --> src/two.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn has_single_char_difference(left: &str, right: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_common_chars` is never used
[INFO] [stdout]   --> src/two.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn get_common_chars(left: &str, right: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Tiles` is never used
[INFO] [stdout]  --> src/three.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Tiles = Vec<Vec<i32>>;
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Location` is never constructed
[INFO] [stdout]  --> src/three.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Location {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dimension` is never constructed
[INFO] [stdout]   --> src/three.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Dimension {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Claim` is never constructed
[INFO] [stdout]   --> src/three.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Claim {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_num_square_inches_overlapping` is never used
[INFO] [stdout]   --> src/three.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn find_num_square_inches_overlapping() -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `deserialise_claim` is never used
[INFO] [stdout]   --> src/three.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn deserialise_claim(line: &str) -> Claim {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_layer_to_tiles` is never used
[INFO] [stdout]   --> src/three.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn add_layer_to_tiles(tiles: &mut Tiles, claim: &Claim) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_overlaps` is never used
[INFO] [stdout]    --> src/three.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn count_overlaps(tiles: &Tiles) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `END_OF_TIMESTAMP_INDEX` is never used
[INFO] [stdout]  --> src/four.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const END_OF_TIMESTAMP_INDEX: usize = 19;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `checksum` is never used
[INFO] [stdout]   --> src/four.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn checksum() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Act` is never used
[INFO] [stdout]   --> src/four.rs:69:6
[INFO] [stdout]    |
[INFO] [stdout] 69 | enum Act { StartShift, FallAsleep, WakeUp }
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `POLYMER_FILE` is never used
[INFO] [stdout]  --> src/five.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const POLYMER_FILE: &'static str = "src/files/five/polymer.txt";
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `UNITS` is never used
[INFO] [stdout]  --> src/five.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const UNITS: &'static str = "abcdefghijklmnopqrstuvwxyz";
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_final_string` is never used
[INFO] [stdout]  --> src/five.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn length_of_final_string() -> usize {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `react` is never used
[INFO] [stdout]   --> src/five.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn react(polymer: String) -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `react_filtered` is never used
[INFO] [stdout]   --> src/five.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn react_filtered(polymer: &String, skip: char) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `polar_opposites` is never used
[INFO] [stdout]   --> src/five.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn polar_opposites(a: char, b: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `react_with_unit` is never used
[INFO] [stdout]   --> src/five.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn react_with_unit(polymer: &mut String, unit: char) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `COORDS_FILE` is never used
[INFO] [stdout]   --> src/six.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const COORDS_FILE: &'static str = "src/files/six/coords.txt";
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MANHATTAN_LIMIT` is never used
[INFO] [stdout]   --> src/six.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const MANHATTAN_LIMIT: i32 = 10000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Grid` is never used
[INFO] [stdout]   --> src/six.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | type Grid = Vec<Vec<GridCell>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `GridCell` is never used
[INFO] [stdout]   --> src/six.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum GridCell {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `point`, `in_territory_of`, `id`, `get_territory_id`, `row`, and `col` are never used
[INFO] [stdout]   --> src/six.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl GridCell {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 31 |     fn point(row: usize, col: usize) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn in_territory_of(point_id: String) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn id(&self) -> Option<String> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn get_territory_id(&self) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn row(&self) -> Option<usize> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn col(&self) -> Option<usize> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_largest_area` is never used
[INFO] [stdout]   --> src/six.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn get_largest_area() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_region` is never used
[INFO] [stdout]    --> src/six.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | pub fn find_region() -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_grid` is never used
[INFO] [stdout]    --> src/six.rs:146:4
[INFO] [stdout]     |
[INFO] [stdout] 146 | fn build_grid(points: &Vec<GridCell>) -> Grid {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_points_from_coords_file` is never used
[INFO] [stdout]    --> src/six.rs:163:4
[INFO] [stdout]     |
[INFO] [stdout] 163 | fn load_points_from_coords_file() -> Vec<GridCell> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fill_grid_with` is never used
[INFO] [stdout]    --> src/six.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn fill_grid_with(points: &Vec<GridCell>, height: usize, width: usize) -> Grid {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `populate_closest_points` is never used
[INFO] [stdout]    --> src/six.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn populate_closest_points(points: &Vec<GridCell>, grid: &mut Grid) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `points_with_infinite_territory` is never used
[INFO] [stdout]    --> src/six.rs:218:4
[INFO] [stdout]     |
[INFO] [stdout] 218 | fn points_with_infinite_territory(grid: &Grid) -> HashSet<String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `manhattan_distance` is never used
[INFO] [stdout]    --> src/six.rs:252:4
[INFO] [stdout]     |
[INFO] [stdout] 252 | fn manhattan_distance(point: &GridCell, target_row: usize, target_col: usize) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INSTRUCTIONS_FILE` is never used
[INFO] [stdout]   --> src/seven.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const INSTRUCTIONS_FILE: &'static str = "src/files/seven/instructions.txt";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ALPHABET` is never used
[INFO] [stdout]   --> src/seven.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const ALPHABET: &'static str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dependency` is never constructed
[INFO] [stdout]   --> src/seven.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Dependency {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_instruction_ordering` is never used
[INFO] [stdout]   --> src/seven.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn get_instruction_ordering() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_next_non_blocked` is never used
[INFO] [stdout]   --> src/seven.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn get_next_non_blocked(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_dependencies_from_file` is never used
[INFO] [stdout]    --> src/seven.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn get_dependencies_from_file() -> Vec<Dependency> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TREE_FILE` is never used
[INFO] [stdout]  --> src/eight.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const TREE_FILE: &'static str = "src/files/eight/tree.txt";
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/eight.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_metadata` is never used
[INFO] [stdout]   --> src/eight.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn sum_metadata(node: &Node) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_metadata_part_two` is never used
[INFO] [stdout]   --> src/eight.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn sum_metadata_part_two(node: &Node) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_sum` is never used
[INFO] [stdout]   --> src/eight.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn calculate_sum() -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_value_of_root` is never used
[INFO] [stdout]   --> src/eight.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn calculate_value_of_root() -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_node` is never used
[INFO] [stdout]   --> src/eight.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 47 |     fn get_node(iter: &mut impl Iterator<Item=u32>) -> Option<Node> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_tree_data` is never used
[INFO] [stdout]   --> src/eight.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn load_tree_data() -> Vec<u32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_PLAYERS` is never used
[INFO] [stdout]  --> src/nine.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const NUM_PLAYERS: usize = 432;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LAST_MARBLE_VALUE` is never used
[INFO] [stdout]  --> src/nine.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const LAST_MARBLE_VALUE: usize = 71019;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `winning_elf_score` is never used
[INFO] [stdout]  --> src/nine.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn winning_elf_score() -> usize {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PRUNE_HEIGHT` is never used
[INFO] [stdout]  --> src/ten.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const PRUNE_HEIGHT: i32 = 15;
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PRUNE_WIDTH` is never used
[INFO] [stdout]  --> src/ten.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const PRUNE_WIDTH: i32 = 100;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PATH_TO_INPUT` is never used
[INFO] [stdout]  --> src/ten.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const PATH_TO_INPUT: &'static str = "src/files/ten/stars.txt";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Star` is never constructed
[INFO] [stdout]   --> src/ten.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Star { position: (i32, i32), velocity: (i32, i32) }
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Sky` is never used
[INFO] [stdout]   --> src/ten.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | type Sky = Vec<Vec<bool>>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/twelve.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut notes_map = lines.fold(HashMap::new(), |mut map, line| {
[INFO] [stdout]    |         ----^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_sky` is never used
[INFO] [stdout]   --> src/ten.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn print_sky(sky: &Sky) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_message` is never used
[INFO] [stdout]   --> src/ten.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn find_message() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_sky_of` is never used
[INFO] [stdout]   --> src/ten.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn create_sky_of(stars: &Vec<Star>) -> Option<Sky> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GRID_SERIAL_NUMBER` is never used
[INFO] [stdout]  --> src/eleven.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | const GRID_SERIAL_NUMBER: usize = 2866;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pot_num`
[INFO] [stdout]   --> src/twelve.rs:49:20
[INFO] [stdout]    |
[INFO] [stdout] 49 |         .filter(|&(pot_num, ch)| ch == '#')
[INFO] [stdout]    |                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pot_num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GRID_SQUARE_SIZE` is never used
[INFO] [stdout]  --> src/eleven.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const GRID_SQUARE_SIZE: usize = 300;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SEARCH_SQUARE_SIZE` is never used
[INFO] [stdout]  --> src/eleven.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const SEARCH_SQUARE_SIZE: usize = 3;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FuelCell` is never constructed
[INFO] [stdout]  --> src/eleven.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct FuelCell {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_frequency` is never used
[INFO] [stdout]  --> src/one.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn calculate_frequency() -> Result<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_optimal_cell_coords` is never used
[INFO] [stdout]   --> src/eleven.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn get_optimal_cell_coords() -> FuelCell {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_GENERATIONS` is never used
[INFO] [stdout]  --> src/twelve.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const NUM_GENERATIONS: i32 = 20;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_repeated_frequency` is never used
[INFO] [stdout]   --> src/one.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn first_repeated_frequency() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RepeatCounts` is never constructed
[INFO] [stdout]  --> src/two.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct RepeatCounts {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_checksum` is never used
[INFO] [stdout]   --> src/two.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn calculate_checksum() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_common_letters` is never used
[INFO] [stdout]   --> src/two.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn find_common_letters() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `has_single_char_difference` is never used
[INFO] [stdout]   --> src/two.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn has_single_char_difference(left: &str, right: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_common_chars` is never used
[INFO] [stdout]   --> src/two.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn get_common_chars(left: &str, right: &str) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Tiles` is never used
[INFO] [stdout]  --> src/three.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Tiles = Vec<Vec<i32>>;
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Location` is never constructed
[INFO] [stdout]  --> src/three.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Location {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dimension` is never constructed
[INFO] [stdout]   --> src/three.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Dimension {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Claim` is never constructed
[INFO] [stdout]   --> src/three.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Claim {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_num_square_inches_overlapping` is never used
[INFO] [stdout]   --> src/three.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn find_num_square_inches_overlapping() -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `deserialise_claim` is never used
[INFO] [stdout]   --> src/three.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn deserialise_claim(line: &str) -> Claim {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_layer_to_tiles` is never used
[INFO] [stdout]   --> src/three.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn add_layer_to_tiles(tiles: &mut Tiles, claim: &Claim) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_overlaps` is never used
[INFO] [stdout]    --> src/three.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn count_overlaps(tiles: &Tiles) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `END_OF_TIMESTAMP_INDEX` is never used
[INFO] [stdout]  --> src/four.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const END_OF_TIMESTAMP_INDEX: usize = 19;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `checksum` is never used
[INFO] [stdout]   --> src/four.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn checksum() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Act` is never used
[INFO] [stdout]   --> src/four.rs:69:6
[INFO] [stdout]    |
[INFO] [stdout] 69 | enum Act { StartShift, FallAsleep, WakeUp }
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `POLYMER_FILE` is never used
[INFO] [stdout]  --> src/five.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const POLYMER_FILE: &'static str = "src/files/five/polymer.txt";
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `UNITS` is never used
[INFO] [stdout]  --> src/five.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const UNITS: &'static str = "abcdefghijklmnopqrstuvwxyz";
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_final_string` is never used
[INFO] [stdout]  --> src/five.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn length_of_final_string() -> usize {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `react` is never used
[INFO] [stdout]   --> src/five.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn react(polymer: String) -> String {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `react_filtered` is never used
[INFO] [stdout]   --> src/five.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn react_filtered(polymer: &String, skip: char) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `polar_opposites` is never used
[INFO] [stdout]   --> src/five.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn polar_opposites(a: char, b: char) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `react_with_unit` is never used
[INFO] [stdout]   --> src/five.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn react_with_unit(polymer: &mut String, unit: char) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `COORDS_FILE` is never used
[INFO] [stdout]   --> src/six.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | const COORDS_FILE: &'static str = "src/files/six/coords.txt";
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MANHATTAN_LIMIT` is never used
[INFO] [stdout]   --> src/six.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const MANHATTAN_LIMIT: i32 = 10000;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Grid` is never used
[INFO] [stdout]   --> src/six.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | type Grid = Vec<Vec<GridCell>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `GridCell` is never used
[INFO] [stdout]   --> src/six.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum GridCell {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `point`, `in_territory_of`, `id`, `get_territory_id`, `row`, and `col` are never used
[INFO] [stdout]   --> src/six.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl GridCell {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 31 |     fn point(row: usize, col: usize) -> Self {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn in_territory_of(point_id: String) -> Self {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn id(&self) -> Option<String> {
[INFO] [stdout]    |        ^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn get_territory_id(&self) -> Option<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     fn row(&self) -> Option<usize> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn col(&self) -> Option<usize> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_largest_area` is never used
[INFO] [stdout]   --> src/six.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub fn get_largest_area() -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_region` is never used
[INFO] [stdout]    --> src/six.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 | pub fn find_region() -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `build_grid` is never used
[INFO] [stdout]    --> src/six.rs:146:4
[INFO] [stdout]     |
[INFO] [stdout] 146 | fn build_grid(points: &Vec<GridCell>) -> Grid {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_points_from_coords_file` is never used
[INFO] [stdout]    --> src/six.rs:163:4
[INFO] [stdout]     |
[INFO] [stdout] 163 | fn load_points_from_coords_file() -> Vec<GridCell> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fill_grid_with` is never used
[INFO] [stdout]    --> src/six.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn fill_grid_with(points: &Vec<GridCell>, height: usize, width: usize) -> Grid {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `populate_closest_points` is never used
[INFO] [stdout]    --> src/six.rs:183:4
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn populate_closest_points(points: &Vec<GridCell>, grid: &mut Grid) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `points_with_infinite_territory` is never used
[INFO] [stdout]    --> src/six.rs:218:4
[INFO] [stdout]     |
[INFO] [stdout] 218 | fn points_with_infinite_territory(grid: &Grid) -> HashSet<String> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `manhattan_distance` is never used
[INFO] [stdout]    --> src/six.rs:252:4
[INFO] [stdout]     |
[INFO] [stdout] 252 | fn manhattan_distance(point: &GridCell, target_row: usize, target_col: usize) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `INSTRUCTIONS_FILE` is never used
[INFO] [stdout]   --> src/seven.rs:10:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | const INSTRUCTIONS_FILE: &'static str = "src/files/seven/instructions.txt";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ALPHABET` is never used
[INFO] [stdout]   --> src/seven.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const ALPHABET: &'static str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
[INFO] [stdout]    |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dependency` is never constructed
[INFO] [stdout]   --> src/seven.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct Dependency {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_instruction_ordering` is never used
[INFO] [stdout]   --> src/seven.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn get_instruction_ordering() -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_next_non_blocked` is never used
[INFO] [stdout]   --> src/seven.rs:91:4
[INFO] [stdout]    |
[INFO] [stdout] 91 | fn get_next_non_blocked(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_dependencies_from_file` is never used
[INFO] [stdout]    --> src/seven.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn get_dependencies_from_file() -> Vec<Dependency> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TREE_FILE` is never used
[INFO] [stdout]  --> src/eight.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const TREE_FILE: &'static str = "src/files/eight/tree.txt";
[INFO] [stdout]   |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/eight.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Node {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_metadata` is never used
[INFO] [stdout]   --> src/eight.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn sum_metadata(node: &Node) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_metadata_part_two` is never used
[INFO] [stdout]   --> src/eight.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn sum_metadata_part_two(node: &Node) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_sum` is never used
[INFO] [stdout]   --> src/eight.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn calculate_sum() -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calculate_value_of_root` is never used
[INFO] [stdout]   --> src/eight.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn calculate_value_of_root() -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_node` is never used
[INFO] [stdout]   --> src/eight.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 47 |     fn get_node(iter: &mut impl Iterator<Item=u32>) -> Option<Node> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `load_tree_data` is never used
[INFO] [stdout]   --> src/eight.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn load_tree_data() -> Vec<u32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_PLAYERS` is never used
[INFO] [stdout]  --> src/nine.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const NUM_PLAYERS: usize = 432;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `LAST_MARBLE_VALUE` is never used
[INFO] [stdout]  --> src/nine.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const LAST_MARBLE_VALUE: usize = 71019;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `winning_elf_score` is never used
[INFO] [stdout]  --> src/nine.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn winning_elf_score() -> usize {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PRUNE_HEIGHT` is never used
[INFO] [stdout]  --> src/ten.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const PRUNE_HEIGHT: i32 = 15;
[INFO] [stdout]   |       ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PRUNE_WIDTH` is never used
[INFO] [stdout]  --> src/ten.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const PRUNE_WIDTH: i32 = 100;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PATH_TO_INPUT` is never used
[INFO] [stdout]  --> src/ten.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const PATH_TO_INPUT: &'static str = "src/files/ten/stars.txt";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Star` is never constructed
[INFO] [stdout]   --> src/ten.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Star { position: (i32, i32), velocity: (i32, i32) }
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Sky` is never used
[INFO] [stdout]   --> src/ten.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | type Sky = Vec<Vec<bool>>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_sky` is never used
[INFO] [stdout]   --> src/ten.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn print_sky(sky: &Sky) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_message` is never used
[INFO] [stdout]   --> src/ten.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn find_message() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_sky_of` is never used
[INFO] [stdout]   --> src/ten.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn create_sky_of(stars: &Vec<Star>) -> Option<Sky> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GRID_SERIAL_NUMBER` is never used
[INFO] [stdout]  --> src/eleven.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | const GRID_SERIAL_NUMBER: usize = 2866;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GRID_SQUARE_SIZE` is never used
[INFO] [stdout]  --> src/eleven.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const GRID_SQUARE_SIZE: usize = 300;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SEARCH_SQUARE_SIZE` is never used
[INFO] [stdout]  --> src/eleven.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const SEARCH_SQUARE_SIZE: usize = 3;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FuelCell` is never constructed
[INFO] [stdout]  --> src/eleven.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct FuelCell {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_optimal_cell_coords` is never used
[INFO] [stdout]   --> src/eleven.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn get_optimal_cell_coords() -> FuelCell {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NUM_GENERATIONS` is never used
[INFO] [stdout]  --> src/twelve.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const NUM_GENERATIONS: i32 = 20;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.46s
[INFO] running `Command { std: "docker" "inspect" "3df02a19251877dc01be42d49a704ff045380f1f1f70383b56e54ab39ee43077", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3df02a19251877dc01be42d49a704ff045380f1f1f70383b56e54ab39ee43077", kill_on_drop: false }`
[INFO] [stdout] 3df02a19251877dc01be42d49a704ff045380f1f1f70383b56e54ab39ee43077