[INFO] cloning repository https://github.com/swidoff/aoc-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/swidoff/aoc-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswidoff%2Faoc-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswidoff%2Faoc-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a6f64fe6d94da0fcdefab393d3c7c81bf5f8ab2f
[INFO] checking swidoff/aoc-2020 against master#e9182f195b8505c87c4bd055b9f6e114ccda0981 for pr-144098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswidoff%2Faoc-2020" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/swidoff/aoc-2020
[INFO] finished tweaking git repo https://github.com/swidoff/aoc-2020
[INFO] tweaked toml for git repo https://github.com/swidoff/aoc-2020 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/swidoff/aoc-2020 on toolchain e9182f195b8505c87c4bd055b9f6e114ccda0981
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/swidoff/aoc-2020 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" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e735401043c32a927b7540e97e7e040ad41517f99135b74c6fc5df961c893a7e
[INFO] running `Command { std: "docker" "start" "-a" "e735401043c32a927b7540e97e7e040ad41517f99135b74c6fc5df961c893a7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e735401043c32a927b7540e97e7e040ad41517f99135b74c6fc5df961c893a7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e735401043c32a927b7540e97e7e040ad41517f99135b74c6fc5df961c893a7e", kill_on_drop: false }`
[INFO] [stdout] e735401043c32a927b7540e97e7e040ad41517f99135b74c6fc5df961c893a7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17493e5975f5b6bb8a524db813ff2728deeacc9bb3d3d5c91342a0f8d1c5ba73
[INFO] running `Command { std: "docker" "start" "-a" "17493e5975f5b6bb8a524db813ff2728deeacc9bb3d3d5c91342a0f8d1c5ba73", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking aoc-2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `arrange_tiles`, `find_sea_monsters`, `merge_tiles`, `parse_tiles`, and `read_file`
[INFO] [stdout]    --> src/day20.rs:297:24
[INFO] [stdout]     |
[INFO] [stdout] 297 |     use crate::day20::{arrange_tiles, find_sea_monsters, merge_tiles, parse_tiles, read_file};
[INFO] [stdout]     |                        ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `find_safe_ingredients`, `find_unsafe_ingredients`, `parse_foods`, `read_file`, and `to_canonical_list`
[INFO] [stdout]    --> src/day21.rs:109:9
[INFO] [stdout]     |
[INFO] [stdout] 109 |         find_safe_ingredients, find_unsafe_ingredients, parse_foods, read_file, to_canonical_list,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `combat`, `parse_decks`, `read_file`, and `recursive_combat`
[INFO] [stdout]    --> src/day22.rs:103:24
[INFO] [stdout]     |
[INFO] [stdout] 103 |     use crate::day22::{combat, parse_decks, read_file, recursive_combat};
[INFO] [stdout]     |                        ^^^^^^  ^^^^^^^^^^^  ^^^^^^^^^  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: no rules expected `,`
[INFO] [stdout]   --> src/day25.rs:60:20
[INFO] [stdout]    |
[INFO] [stdout] 60 |         assert_eq!(, res);
[INFO] [stdout]    |                    ^ no rules expected this token in macro call
[INFO] [stdout]    |
[INFO] [stdout] note: while trying to match meta-variable `$left:expr`
[INFO] [stdout]   --> /rustc/e9182f195b8505c87c4bd055b9f6e114ccda0981/library/core/src/macros/mod.rs:43:6
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file_as_set` is never used
[INFO] [stdout]   --> src/day1.rs:11:4
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn read_file_as_set() -> HashSet<u32> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_pair_with_sum` is never used
[INFO] [stdout]   --> src/day1.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn find_pair_with_sum(input: &HashSet<u32>, sum: u32) -> Option<(u32, u32)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_triple_with_sum` is never used
[INFO] [stdout]   --> src/day1.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn find_triple_with_sum(input: &HashSet<u32>, sum: u32) -> Option<(u32, u32, u32)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day10.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn read_file() -> impl Iterator<Item = u64> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `joltage_distribution` is never used
[INFO] [stdout]   --> src/day10.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn joltage_distribution(adapters: &mut Vec<u64>) -> (u64, u64) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_arrangements` is never used
[INFO] [stdout]   --> src/day10.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn count_arrangements(adapters: &mut Vec<u64>) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day11.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Position` is never used
[INFO] [stdout]   --> src/day11.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Position {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_layout` is never used
[INFO] [stdout]   --> src/day11.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn parse_layout(iter: impl Iterator<Item = String>) -> HashMap<(i32, i32), Position> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_adjacent_occupied` is never used
[INFO] [stdout]   --> src/day11.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn count_adjacent_occupied(x: i32, y: i32, layout: &HashMap<(i32, i32), Position>) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `model_waiting_room_part1` is never used
[INFO] [stdout]   --> src/day11.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn model_waiting_room_part1(layout: &mut HashMap<(i32, i32), Position>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_first_occupied` is never used
[INFO] [stdout]   --> src/day11.rs:89:4
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn count_first_occupied(x: i32, y: i32, layout: &HashMap<(i32, i32), Position>) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `model_waiting_room_part2` is never used
[INFO] [stdout]    --> src/day11.rs:117:4
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn model_waiting_room_part2(layout: &mut HashMap<(i32, i32), Position>) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day12.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]   --> src/day12.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Direction {
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `turn`, `y_amount`, and `x_amount` are never used
[INFO] [stdout]   --> src/day12.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Direction {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 20 |     fn turn(&self, turn: Turn, degrees: i32) -> Direction {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 |     fn y_amount(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn x_amount(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Turn` is never used
[INFO] [stdout]   --> src/day12.rs:57:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | enum Turn {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `rotate` is never used
[INFO] [stdout]   --> src/day12.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Turn {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 63 |     fn rotate(&self, x: i32, y: i32, degrees: i32) -> (i32, i32) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Action` is never used
[INFO] [stdout]   --> src/day12.rs:77:6
[INFO] [stdout]    |
[INFO] [stdout] 77 | enum Action {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_actions` is never used
[INFO] [stdout]   --> src/day12.rs:83:4
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn parse_actions(iter: impl Iterator<Item = String>) -> impl Iterator<Item = Action> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_actions_part1` is never used
[INFO] [stdout]    --> src/day12.rs:100:4
[INFO] [stdout]     |
[INFO] [stdout] 100 | fn execute_actions_part1(actions: impl Iterator<Item = Action>) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `execute_actions_part2` is never used
[INFO] [stdout]    --> src/day12.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn execute_actions_part2(actions: impl Iterator<Item = Action>) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day13.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_file_part1` is never used
[INFO] [stdout]   --> src/day13.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn parse_file_part1(lines: impl Iterator<Item = String>) -> (u32, Vec<u32>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_earliest_bus_and_wait_time` is never used
[INFO] [stdout]   --> src/day13.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn find_earliest_bus_and_wait_time(timestamp: u32, bus_numbers: &Vec<u32>) -> (u32, u32) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_file_part2` is never used
[INFO] [stdout]   --> src/day13.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn parse_file_part2(lines: impl Iterator<Item = String>) -> Vec<(u64, u64)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_line_part2` is never used
[INFO] [stdout]   --> src/day13.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn parse_line_part2(line: &String) -> Vec<(u64, u64)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_contest` is never used
[INFO] [stdout]   --> src/day13.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn solve_contest(inputs: &Vec<(u64, u64)>) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day14.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Instruction` is never used
[INFO] [stdout]   --> src/day14.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | enum Instruction {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_file` is never used
[INFO] [stdout]   --> src/day14.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn parse_file(iter: impl Iterator<Item = String>) -> Vec<Instruction> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_instructions` is never used
[INFO] [stdout]   --> src/day14.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn process_instructions(instructions: &Vec<Instruction>) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_instructions_v2` is never used
[INFO] [stdout]   --> src/day14.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn process_instructions_v2(instructions: &Vec<Instruction>) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `enumerate_addresses` is never used
[INFO] [stdout]    --> src/day14.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn enumerate_addresses(base_address: u64, x_indexes: &Vec<u8>) -> VecDeque<u64> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_input` is never used
[INFO] [stdout]  --> src/day15.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn parse_input(input: &str) -> Vec<u64> {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MemoryGame` is never constructed
[INFO] [stdout]   --> src/day15.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct MemoryGame {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `speak`, and `next` are never used
[INFO] [stdout]   --> src/day15.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl MemoryGame {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 19 |     fn new() -> MemoryGame {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn speak(&mut self, value: u64) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn next(&self) -> u64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `memory_game` is never used
[INFO] [stdout]   --> src/day15.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn memory_game(starting_numbers: &Vec<u64>, iterations: u64) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day16.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn read_file() -> String {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Notes` is never constructed
[INFO] [stdout]   --> src/day16.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Notes {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_valid_for_any_field` is never used
[INFO] [stdout]   --> src/day16.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Notes {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 23 |     fn is_valid_for_any_field(&self, num: u64) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_file` is never used
[INFO] [stdout]   --> src/day16.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn parse_file(file: &String) -> Notes {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ticket_scanning_error_rate` is never used
[INFO] [stdout]   --> src/day16.rs:77:4
[INFO] [stdout]    |
[INFO] [stdout] 77 | fn ticket_scanning_error_rate(notes: &Notes) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assign_fields` is never used
[INFO] [stdout]   --> src/day16.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn assign_fields(notes: &Notes) -> Vec<&String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day17.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Coord` is never used
[INFO] [stdout]   --> src/day17.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | type Coord = (i64, i64, i64, i64);
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `initial_state` is never used
[INFO] [stdout]   --> src/day17.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn initial_state(iter: impl Iterator<Item = String>, has_w: bool) -> HashMap<Coord, bool> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `neighbors` is never used
[INFO] [stdout]   --> src/day17.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn neighbors(coords: &Coord, has_w: bool) -> impl Iterator<Item = Coord> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `boot_process` is never used
[INFO] [stdout]   --> src/day17.rs:46:4
[INFO] [stdout]    |
[INFO] [stdout] 46 | fn boot_process(state: &mut HashMap<Coord, bool>, cycles: usize, has_w: bool) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day18.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Operator` is never used
[INFO] [stdout]   --> src/day18.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Operator {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]   --> src/day18.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Token {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `tokenize` is never used
[INFO] [stdout]   --> src/day18.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn tokenize(line: &str) -> Vec<Token> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Node` is never used
[INFO] [stdout]   --> src/day18.rs:39:6
[INFO] [stdout]    |
[INFO] [stdout] 39 | enum Node {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expression_part1` is never used
[INFO] [stdout]   --> src/day18.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn expression_part1(tokens: &mut VecDeque<Token>) -> Box<Node> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expression_part2` is never used
[INFO] [stdout]   --> src/day18.rs:54:4
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn expression_part2(tokens: &mut VecDeque<Token>) -> Box<Node> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `term` is never used
[INFO] [stdout]   --> src/day18.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn term(tokens: &mut VecDeque<Token>) -> Box<Node> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factor_part1` is never used
[INFO] [stdout]   --> src/day18.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn factor_part1(tokens: &mut VecDeque<Token>) -> Box<Node> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `factor_part2` is never used
[INFO] [stdout]   --> src/day18.rs:84:4
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn factor_part2(tokens: &mut VecDeque<Token>) -> Box<Node> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate_node` is never used
[INFO] [stdout]   --> src/day18.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn evaluate_node(node: &Box<Node>) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate_part1` is never used
[INFO] [stdout]    --> src/day18.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn evaluate_part1(tokens: Vec<Token>) -> u64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `evaluate_part2` is never used
[INFO] [stdout]    --> src/day18.rs:110:4
[INFO] [stdout]     |
[INFO] [stdout] 110 | fn evaluate_part2(tokens: Vec<Token>) -> u64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day19.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Rule` is never used
[INFO] [stdout]   --> src/day19.rs:13:6
[INFO] [stdout]    |
[INFO] [stdout] 13 | enum Rule {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_input` is never used
[INFO] [stdout]   --> src/day19.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn parse_input(
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid` is never used
[INFO] [stdout]   --> src/day19.rs:76:4
[INFO] [stdout]    |
[INFO] [stdout] 76 | fn is_valid(msg: &Vec<char>, rules: &HashMap<u64, Rule>) -> bool {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_for_rule` is never used
[INFO] [stdout]   --> src/day19.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn is_valid_for_rule(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `PasswordRecord` is never constructed
[INFO] [stdout]  --> src/day2.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct PasswordRecord {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_valid_part1` and `is_valid_part2` are never used
[INFO] [stdout]   --> src/day2.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl PasswordRecord {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] 16 |     fn is_valid_part1(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn is_valid_part2(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_password_database` is never used
[INFO] [stdout]   --> src/day2.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn read_password_database() -> impl Iterator<Item = PasswordRecord> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day20.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tile` is never constructed
[INFO] [stdout]   --> src/day20.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Tile {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `dim`, `empty`, `rotate`, and `flip` are never used
[INFO] [stdout]   --> src/day20.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Tile {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 21 |     fn dim(&self) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn empty(&self) -> Tile {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     fn rotate(&self) -> Tile {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn flip(&self) -> Tile {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_tiles` is never used
[INFO] [stdout]   --> src/day20.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn parse_tiles(iter: impl Iterator<Item = String>) -> Vec<Tile> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `border_coords` is never used
[INFO] [stdout]   --> src/day20.rs:92:4
[INFO] [stdout]    |
[INFO] [stdout] 92 | fn border_coords(side: usize, dim: usize) -> Vec<(usize, usize)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_matches` is never used
[INFO] [stdout]    --> src/day20.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn find_matches(tile1: &Tile, tile2: &Tile) -> Vec<usize> {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_upper_left_corner` is never used
[INFO] [stdout]    --> src/day20.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn find_upper_left_corner(tiles: &Vec<Tile>) -> &Tile {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `match_side` is never used
[INFO] [stdout]    --> src/day20.rs:148:4
[INFO] [stdout]     |
[INFO] [stdout] 148 | fn match_side(tile1: &Tile, tile2: &Tile, side1: usize, side2: usize) -> Option<Tile> {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `arrange_tiles` is never used
[INFO] [stdout]    --> src/day20.rs:174:4
[INFO] [stdout]     |
[INFO] [stdout] 174 | fn arrange_tiles(tiles: &Vec<Tile>, dim: usize) -> Vec<Vec<Tile>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_tiles` is never used
[INFO] [stdout]    --> src/day20.rs:210:4
[INFO] [stdout]     |
[INFO] [stdout] 210 | fn merge_tiles(tiles: &Vec<Vec<Tile>>) -> Tile {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_sea_monsters` is never used
[INFO] [stdout]    --> src/day20.rs:240:4
[INFO] [stdout]     |
[INFO] [stdout] 240 | fn find_sea_monsters(tile: &Tile) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_hashes` is never used
[INFO] [stdout]    --> src/day20.rs:276:4
[INFO] [stdout]     |
[INFO] [stdout] 276 | fn count_hashes(tile: &Vec<Vec<char>>) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mask_match` is never used
[INFO] [stdout]    --> src/day20.rs:283:4
[INFO] [stdout]     |
[INFO] [stdout] 283 | fn mask_match(tile: &Vec<Vec<char>>, r: usize, c: usize, mask: &Vec<Vec<char>>) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EXAMPLE` is never used
[INFO] [stdout]    --> src/day20.rs:299:11
[INFO] [stdout]     |
[INFO] [stdout] 299 |     const EXAMPLE: &str = "
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day21.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Food` is never constructed
[INFO] [stdout]   --> src/day21.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Food {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_foods` is never used
[INFO] [stdout]   --> src/day21.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn parse_foods(iter: impl Iterator<Item = String>) -> Vec<Food> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_allergen_candidates` is never used
[INFO] [stdout]   --> src/day21.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn find_allergen_candidates(foods: &Vec<Food>) -> HashMap<&String, HashSet<&String>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_safe_ingredients` is never used
[INFO] [stdout]   --> src/day21.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn find_safe_ingredients(foods: &Vec<Food>) -> Vec<&String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_unsafe_ingredients` is never used
[INFO] [stdout]   --> src/day21.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn find_unsafe_ingredients(foods: &Vec<Food>) -> HashMap<&String, &String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_canonical_list` is never used
[INFO] [stdout]   --> src/day21.rs:99:4
[INFO] [stdout]    |
[INFO] [stdout] 99 | fn to_canonical_list(allergens: &HashMap<&String, &String>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EXAMPLE` is never used
[INFO] [stdout]    --> src/day21.rs:112:11
[INFO] [stdout]     |
[INFO] [stdout] 112 |     const EXAMPLE: &str = "
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day22.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_decks` is never used
[INFO] [stdout]   --> src/day22.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn parse_decks(iter: impl Iterator<Item = String>) -> (VecDeque<u64>, VecDeque<u64>) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `combat` is never used
[INFO] [stdout]   --> src/day22.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn combat(deck1: &mut VecDeque<u64>, deck2: &mut VecDeque<u64>) -> (usize, u64) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_result` is never used
[INFO] [stdout]   --> src/day22.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn calc_result(deck1: &VecDeque<u64>, deck2: &VecDeque<u64>) -> (usize, u64) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `recursive_combat` is never used
[INFO] [stdout]   --> src/day22.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn recursive_combat(deck1: &mut VecDeque<u64>, deck2: &mut VecDeque<u64>) -> (usize, u64) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EXAMPLE` is never used
[INFO] [stdout]    --> src/day22.rs:105:11
[INFO] [stdout]     |
[INFO] [stdout] 105 |     const EXAMPLE: &str = "
[INFO] [stdout]     |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_input` is never used
[INFO] [stdout]  --> src/day23.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn parse_input(input: &String) -> Vec<usize> {
[INFO] [stdout]   |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_cups` is never used
[INFO] [stdout]   --> src/day23.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn play_cups(input: &Vec<usize>, moves: usize) -> String {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_cups_faster` is never used
[INFO] [stdout]   --> src/day23.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn play_cups_faster(input: &Vec<usize>, moves: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_cups` is never used
[INFO] [stdout]    --> src/day23.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn add_cups(cups: &mut Vec<usize>, n: usize) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day24.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Coord` is never used
[INFO] [stdout]   --> src/day24.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | type Coord = (i64, i64);
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `flip_tiles` is never used
[INFO] [stdout]   --> src/day24.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn flip_tiles(iter: impl Iterator<Item = String>) -> HashMap<Coord, u64> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part1` is never used
[INFO] [stdout]   --> src/day24.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn part1(iter: impl Iterator<Item = String>) -> u64 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `coord_for_line` is never used
[INFO] [stdout]   --> src/day24.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn coord_for_line(line: String) -> Coord {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ADJ_TILES` is never used
[INFO] [stdout]   --> src/day24.rs:68:7
[INFO] [stdout]    |
[INFO] [stdout] 68 | const ADJ_TILES: [Coord; 6] = [(-2, 0), (2, 0), (-1, -1), (-1, 1), (1, 1), (1, -1)];
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expand` is never used
[INFO] [stdout]   --> src/day24.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn expand(tiles: &mut HashMap<Coord, u64>) {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `part2` is never used
[INFO] [stdout]   --> src/day24.rs:88:4
[INFO] [stdout]    |
[INFO] [stdout] 88 | fn part2(iter: impl Iterator<Item = String>, turns: usize) -> u64 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day25.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_keys` is never used
[INFO] [stdout]   --> src/day25.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn parse_keys(iter: impl Iterator<Item = String>) -> (u64, u64) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transform` is never used
[INFO] [stdout]   --> src/day25.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn transform(subject_number: u64, loop_size: usize) -> impl Iterator<Item = (u64, usize)> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_encryption_key` is never used
[INFO] [stdout]   --> src/day25.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn find_encryption_key(door_key: u64, card_key: u64, loops: usize) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_grid` is never used
[INFO] [stdout]  --> src/day3.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn read_grid() -> Vec<Vec<char>> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_grid_from_string` is never used
[INFO] [stdout]   --> src/day3.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn read_grid_from_string(str: &String) -> Vec<Vec<char>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_trees_on_path` is never used
[INFO] [stdout]   --> src/day3.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn count_trees_on_path(grid: &Vec<Vec<char>>, x_velocity: usize, y_velocity: usize) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EYE_COLORS` is never used
[INFO] [stdout]  --> src/day4.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const EYE_COLORS: [&str; 7] = ["amb", "blu", "brn", "grn", "gry", "hzl", "oth"];
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_passports` is never used
[INFO] [stdout]  --> src/day4.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn read_passports() -> Vec<Passport> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_passports_from_string` is never used
[INFO] [stdout]   --> src/day4.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn read_passports_from_string(str: &String) -> Vec<Passport> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Passport` is never constructed
[INFO] [stdout]   --> src/day4.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Passport {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `is_valid`, `is_valid_number_of_fields`, `all_fields_valid`, and `is_valid_field` are never used
[INFO] [stdout]   --> src/day4.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Passport {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 38 |     fn new() -> Passport {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn is_valid(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn is_valid_number_of_fields(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn all_fields_valid(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn is_valid_field(field: &String, value: &String) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_number` is never used
[INFO] [stdout]   --> src/day4.rs:75:4
[INFO] [stdout]    |
[INFO] [stdout] 75 | fn is_valid_number(value: &str, min: u16, max: u16) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_hex_number` is never used
[INFO] [stdout]   --> src/day4.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn is_valid_hex_number(value: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]   --> src/day5.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn read_file() -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BoardingPass` is never constructed
[INFO] [stdout]   --> src/day5.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct BoardingPass {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `seat` is never used
[INFO] [stdout]   --> src/day5.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl BoardingPass {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 25 |     fn seat(&self) -> u16 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_pass` is never used
[INFO] [stdout]   --> src/day5.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn decode_pass(pass: &String) -> BoardingPass {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `locate_position` is never used
[INFO] [stdout]   --> src/day5.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn locate_position(positions: u16, codes: &str, lower_code: char) -> u16 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file_v2` is never used
[INFO] [stdout]   --> src/day5.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn read_file_v2() -> impl Iterator<Item = u16> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `line_to_seat` is never used
[INFO] [stdout]   --> src/day5.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn line_to_seat(line: &mut impl Iterator<Item = char>) -> u16 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day6.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sum_answer_counts` is never used
[INFO] [stdout]   --> src/day6.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn sum_answer_counts(lines: impl Iterator<Item = String>, union: bool) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day7.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_rules` is never used
[INFO] [stdout]   --> src/day7.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn parse_rules(lines: impl Iterator<Item = String>) -> HashMap<String, Vec<(String, u16)>> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_rules` is never used
[INFO] [stdout]   --> src/day7.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn reverse_rules(rules: &HashMap<String, Vec<(String, u16)>>) -> HashMap<&String, Vec<&String>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collect_outer_bags` is never used
[INFO] [stdout]   --> src/day7.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn collect_outer_bags<'a>(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_inner_bags` is never used
[INFO] [stdout]   --> src/day7.rs:71:4
[INFO] [stdout]    |
[INFO] [stdout] 71 | fn count_inner_bags(rules: &HashMap<String, Vec<(String, u16)>>, outer_bag: &String) -> u64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day8.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn read_file() -> impl Iterator<Item = String> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Instruction` is never used
[INFO] [stdout]   --> src/day8.rs:14:6
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum Instruction {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_instructions` is never used
[INFO] [stdout]   --> src/day8.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn parse_instructions(iter: impl Iterator<Item = String>) -> Vec<Instruction> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_code` is never used
[INFO] [stdout]   --> src/day8.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn run_code(program: &Vec<Instruction>) -> Result<i32, i32> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `break_infinite_loop` is never used
[INFO] [stdout]   --> src/day8.rs:68:4
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn break_infinite_loop(program: &mut Vec<Instruction>) -> Option<(usize, i32)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_file` is never used
[INFO] [stdout]  --> src/day9.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn read_file() -> impl Iterator<Item = u64> {
[INFO] [stdout]   |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_first_invalid` is never used
[INFO] [stdout]   --> src/day9.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn find_first_invalid(seq: &Vec<u64>, preamble: usize) -> Option<u64> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_sum_of_pair` is never used
[INFO] [stdout]   --> src/day9.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn is_sum_of_pair(value: u64, candidates: &[u64]) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_summing_subsequence` is never used
[INFO] [stdout]   --> src/day9.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn find_summing_subsequence(target: u64, candidates: &Vec<u64>) -> Option<(u64, u64)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc-2020` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "17493e5975f5b6bb8a524db813ff2728deeacc9bb3d3d5c91342a0f8d1c5ba73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17493e5975f5b6bb8a524db813ff2728deeacc9bb3d3d5c91342a0f8d1c5ba73", kill_on_drop: false }`
[INFO] [stdout] 17493e5975f5b6bb8a524db813ff2728deeacc9bb3d3d5c91342a0f8d1c5ba73