[INFO] cloning repository https://github.com/boylede/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/boylede/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboylede%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboylede%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 397cc12bb13b7cefb04a151ce87d992b6b7afb6d
[INFO] building boylede/aoc2020 against try#615edd3ad1cf6871c977dc900317cb6c2070fd6b for pr-97334
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboylede%2Faoc2020" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/boylede/aoc2020 on toolchain 615edd3ad1cf6871c977dc900317cb6c2070fd6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/boylede/aoc2020
[INFO] finished tweaking git repo https://github.com/boylede/aoc2020
[INFO] tweaked toml for git repo https://github.com/boylede/aoc2020 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/boylede/aoc2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stdout] 3388d4cd6385b6b4cb820c7cb689a48b06cd2d62f95ac4f8372f43fa45329621
[INFO] running `Command { std: "docker" "start" "-a" "3388d4cd6385b6b4cb820c7cb689a48b06cd2d62f95ac4f8372f43fa45329621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3388d4cd6385b6b4cb820c7cb689a48b06cd2d62f95ac4f8372f43fa45329621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3388d4cd6385b6b4cb820c7cb689a48b06cd2d62f95ac4f8372f43fa45329621", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "99e888827602878b3f2f272dacaafd2507365ef40839b8b8540f96d463adef32", kill_on_drop: false }`
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[INFO] [stderr]    Compiling aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day12.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day13.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day14.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day15.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day16.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day17.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day18.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `Cursor`, `Read`, `Seek`
[INFO] [stdout]  --> src/day18.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, Cursor, Read, Seek};
[INFO] [stdout]   |               ^^^^^^^  ^^^^^^  ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day19.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day20.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day21.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day22.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day23.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day25.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:244:21
[INFO] [stdout]     |
[INFO] [stdout] 244 |                 Err(e) => {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/day11.rs:87:45
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let max_x = *area.iter().map(|(Coord(x, y), _)| x).max().unwrap();
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/day11.rs:88:42
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let max_y = *area.iter().map(|(Coord(x, y), _)| y).max().unwrap();
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/day11.rs:89:45
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let min_x = *area.iter().map(|(Coord(x, y), _)| x).min().unwrap();
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/day11.rs:90:42
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let min_y = *area.iter().map(|(Coord(x, y), _)| y).min().unwrap();
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seat`
[INFO] [stdout]    --> src/day11.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |         if let Square::Seat(seat) = square {
[INFO] [stdout]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_seat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/day13.rs:36:46
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let (max_i, max) = rules.iter().max_by(|(i, b), (ii, bb)| b.cmp(bb)).unwrap();
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ii`
[INFO] [stdout]   --> src/day13.rs:36:54
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let (max_i, max) = rules.iter().max_by(|(i, b), (ii, bb)| b.cmp(bb)).unwrap();
[INFO] [stdout]    |                                                      ^^ help: if this is intentional, prefix it with an underscore: `_ii`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day14.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day14.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day15.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day15.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day16.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day16.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day17.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day17.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]    --> src/day18.rs:295:14
[INFO] [stdout]     |
[INFO] [stdout] 295 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day19.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day19.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day20.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day20.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day21.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day21.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day22.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day22.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day23.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day23.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tile`
[INFO] [stdout]   --> src/day24.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |         .filter(|(tile, turns)| turns % 2 == 1)
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_tile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]   --> src/day24.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day25.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day25.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_area`
[INFO] [stdout]   --> src/day11.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn print_area(area: &HashMap<Coord, Square>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `range`
[INFO] [stdout]   --> src/day11.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn range<T>(area: &HashMap<Coord, T>) -> (i32, i32, i32, i32) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/day18.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn new() -> ParseState {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `consume_operation`
[INFO] [stdout]   --> src/day18.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn consume_operation(stream: &mut Walk) -> Result<char, ()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `consume_expression`
[INFO] [stdout]    --> src/day18.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn consume_expression(stream: &mut Walk) -> Result<Expression, ()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `consume_factor`
[INFO] [stdout]    --> src/day18.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn consume_factor(stream: &mut Walk) -> Result<Factor, ()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Walk`
[INFO] [stdout]    --> src/day18.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 299 | struct Walk<'a> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]    --> src/day18.rs:305:8
[INFO] [stdout]     |
[INFO] [stdout] 305 |     fn next(&mut self) -> Option<char> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backward`
[INFO] [stdout]    --> src/day18.rs:316:8
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn backward(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `wrap`
[INFO] [stdout]    --> src/day18.rs:319:8
[INFO] [stdout]     |
[INFO] [stdout] 319 |     fn wrap(inner: &'a str) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Coord`
[INFO] [stdout]   --> src/day24.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct Coord(i32, i32, i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 56 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/main.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[clap(version = "0.1.0", author = "Daniel Boyle")]
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 12 | #[derive(Debug, Clone, Clap)]
[INFO] [stdout]    |                        ---- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 18s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: tendril v0.4.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "99e888827602878b3f2f272dacaafd2507365ef40839b8b8540f96d463adef32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99e888827602878b3f2f272dacaafd2507365ef40839b8b8540f96d463adef32", kill_on_drop: false }`
[INFO] [stdout] 99e888827602878b3f2f272dacaafd2507365ef40839b8b8540f96d463adef32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a45c7062c979a0932ebe4a2bd8698a9d214334bf9d0b81cc1c20e63e4718011
[INFO] running `Command { std: "docker" "start" "-a" "6a45c7062c979a0932ebe4a2bd8698a9d214334bf9d0b81cc1c20e63e4718011", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day12.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day13.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day14.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day15.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day16.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day17.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day18.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `Cursor`, `Read`, `Seek`
[INFO] [stdout]  --> src/day18.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, Cursor, Read, Seek};
[INFO] [stdout]   |               ^^^^^^^  ^^^^^^  ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day19.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day20.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day21.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day22.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day23.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day25.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:244:21
[INFO] [stdout]     |
[INFO] [stdout] 244 |                 Err(e) => {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/day11.rs:87:45
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let max_x = *area.iter().map(|(Coord(x, y), _)| x).max().unwrap();
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/day11.rs:88:42
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let max_y = *area.iter().map(|(Coord(x, y), _)| y).max().unwrap();
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/day11.rs:89:45
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let min_x = *area.iter().map(|(Coord(x, y), _)| x).min().unwrap();
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/day11.rs:90:42
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let min_y = *area.iter().map(|(Coord(x, y), _)| y).min().unwrap();
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seat`
[INFO] [stdout]    --> src/day11.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |         if let Square::Seat(seat) = square {
[INFO] [stdout]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_seat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/day13.rs:36:46
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let (max_i, max) = rules.iter().max_by(|(i, b), (ii, bb)| b.cmp(bb)).unwrap();
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ii`
[INFO] [stdout]   --> src/day13.rs:36:54
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let (max_i, max) = rules.iter().max_by(|(i, b), (ii, bb)| b.cmp(bb)).unwrap();
[INFO] [stdout]    |                                                      ^^ help: if this is intentional, prefix it with an underscore: `_ii`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day14.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day14.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day15.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day15.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day16.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day16.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day17.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day17.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]    --> src/day18.rs:295:14
[INFO] [stdout]     |
[INFO] [stdout] 295 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day19.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day19.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day20.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day20.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day21.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day21.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day22.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day22.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day23.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day23.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tile`
[INFO] [stdout]   --> src/day24.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |         .filter(|(tile, turns)| turns % 2 == 1)
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_tile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]   --> src/day24.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day25.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day25.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_area`
[INFO] [stdout]   --> src/day11.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn print_area(area: &HashMap<Coord, Square>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `range`
[INFO] [stdout]   --> src/day11.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn range<T>(area: &HashMap<Coord, T>) -> (i32, i32, i32, i32) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/day18.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn new() -> ParseState {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `consume_operation`
[INFO] [stdout]   --> src/day18.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn consume_operation(stream: &mut Walk) -> Result<char, ()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `consume_expression`
[INFO] [stdout]    --> src/day18.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn consume_expression(stream: &mut Walk) -> Result<Expression, ()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `consume_factor`
[INFO] [stdout]    --> src/day18.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn consume_factor(stream: &mut Walk) -> Result<Factor, ()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Walk`
[INFO] [stdout]    --> src/day18.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 299 | struct Walk<'a> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]    --> src/day18.rs:305:8
[INFO] [stdout]     |
[INFO] [stdout] 305 |     fn next(&mut self) -> Option<char> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backward`
[INFO] [stdout]    --> src/day18.rs:316:8
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn backward(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `wrap`
[INFO] [stdout]    --> src/day18.rs:319:8
[INFO] [stdout]     |
[INFO] [stdout] 319 |     fn wrap(inner: &'a str) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Coord`
[INFO] [stdout]   --> src/day24.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct Coord(i32, i32, i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 56 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: derive helper attribute is used before it is introduced
[INFO] [stdout]   --> src/main.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 | #[clap(version = "0.1.0", author = "Daniel Boyle")]
[INFO] [stdout]    |   ^^^^
[INFO] [stdout] 12 | #[derive(Debug, Clone, Clap)]
[INFO] [stdout]    |                        ---- the attribute is introduced here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(legacy_derive_helpers)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day12.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day13.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day14.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day15.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day16.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day17.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day18.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `Cursor`, `Read`, `Seek`
[INFO] [stdout]  --> src/day18.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, Cursor, Read, Seek};
[INFO] [stdout]   |               ^^^^^^^  ^^^^^^  ^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day19.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day20.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day21.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day22.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day23.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/day25.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/lib.rs:244:21
[INFO] [stdout]     |
[INFO] [stdout] 244 |                 Err(e) => {
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/day11.rs:87:45
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let max_x = *area.iter().map(|(Coord(x, y), _)| x).max().unwrap();
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/day11.rs:88:42
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let max_y = *area.iter().map(|(Coord(x, y), _)| y).max().unwrap();
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/day11.rs:89:45
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let min_x = *area.iter().map(|(Coord(x, y), _)| x).min().unwrap();
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/day11.rs:90:42
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let min_y = *area.iter().map(|(Coord(x, y), _)| y).min().unwrap();
[INFO] [stdout]    |                                          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seat`
[INFO] [stdout]    --> src/day11.rs:108:29
[INFO] [stdout]     |
[INFO] [stdout] 108 |         if let Square::Seat(seat) = square {
[INFO] [stdout]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_seat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/day13.rs:36:46
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let (max_i, max) = rules.iter().max_by(|(i, b), (ii, bb)| b.cmp(bb)).unwrap();
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ii`
[INFO] [stdout]   --> src/day13.rs:36:54
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let (max_i, max) = rules.iter().max_by(|(i, b), (ii, bb)| b.cmp(bb)).unwrap();
[INFO] [stdout]    |                                                      ^^ help: if this is intentional, prefix it with an underscore: `_ii`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day14.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day14.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day15.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day15.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day16.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day16.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day17.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day17.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]    --> src/day18.rs:295:14
[INFO] [stdout]     |
[INFO] [stdout] 295 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day19.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day19.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day20.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day20.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day21.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day21.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day22.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day22.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day23.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day23.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tile`
[INFO] [stdout]   --> src/day24.rs:28:19
[INFO] [stdout]    |
[INFO] [stdout] 28 |         .filter(|(tile, turns)| turns % 2 == 1)
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_tile`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]   --> src/day24.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day25.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn part1(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lines`
[INFO] [stdout]  --> src/day25.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn part2(lines: &Vec<String>) -> PartResult {
[INFO] [stdout]   |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_lines`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_area`
[INFO] [stdout]   --> src/day11.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn print_area(area: &HashMap<Coord, Square>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `range`
[INFO] [stdout]   --> src/day11.rs:86:4
[INFO] [stdout]    |
[INFO] [stdout] 86 | fn range<T>(area: &HashMap<Coord, T>) -> (i32, i32, i32, i32) {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/day18.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn new() -> ParseState {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `consume_operation`
[INFO] [stdout]   --> src/day18.rs:98:4
[INFO] [stdout]    |
[INFO] [stdout] 98 | fn consume_operation(stream: &mut Walk) -> Result<char, ()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `consume_expression`
[INFO] [stdout]    --> src/day18.rs:126:4
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn consume_expression(stream: &mut Walk) -> Result<Expression, ()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `consume_factor`
[INFO] [stdout]    --> src/day18.rs:176:4
[INFO] [stdout]     |
[INFO] [stdout] 176 | fn consume_factor(stream: &mut Walk) -> Result<Factor, ()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Walk`
[INFO] [stdout]    --> src/day18.rs:299:8
[INFO] [stdout]     |
[INFO] [stdout] 299 | struct Walk<'a> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]    --> src/day18.rs:305:8
[INFO] [stdout]     |
[INFO] [stdout] 305 |     fn next(&mut self) -> Option<char> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `backward`
[INFO] [stdout]    --> src/day18.rs:316:8
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn backward(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `wrap`
[INFO] [stdout]    --> src/day18.rs:319:8
[INFO] [stdout]     |
[INFO] [stdout] 319 |     fn wrap(inner: &'a str) -> Self {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Coord`
[INFO] [stdout]   --> src/day24.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct Coord(i32, i32, i32);
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 56 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.82s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: tendril v0.4.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/aoc2020-3bc2711d65e5d662)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/aoc2020-0bcfed3c5c613227)
[INFO] running `Command { std: "docker" "inspect" "6a45c7062c979a0932ebe4a2bd8698a9d214334bf9d0b81cc1c20e63e4718011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a45c7062c979a0932ebe4a2bd8698a9d214334bf9d0b81cc1c20e63e4718011", kill_on_drop: false }`
[INFO] [stdout] 6a45c7062c979a0932ebe4a2bd8698a9d214334bf9d0b81cc1c20e63e4718011