[INFO] cloning repository https://github.com/ircubic/AoC2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ircubic/AoC2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fircubic%2FAoC2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fircubic%2FAoC2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b95d4986a8def3ee7e07a5545b7ddad1111e68d3
[INFO] checking ircubic/AoC2020 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fircubic%2FAoC2020" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ircubic/AoC2020 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ircubic/AoC2020
[INFO] finished tweaking git repo https://github.com/ircubic/AoC2020
[INFO] tweaked toml for git repo https://github.com/ircubic/AoC2020 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ircubic/AoC2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4fa486acb4ee6ef053b03701112a8b1d8e566c35b5db41426d383f8f092cc217
[INFO] running `Command { std: "docker" "start" "-a" "4fa486acb4ee6ef053b03701112a8b1d8e566c35b5db41426d383f8f092cc217", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fa486acb4ee6ef053b03701112a8b1d8e566c35b5db41426d383f8f092cc217", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fa486acb4ee6ef053b03701112a8b1d8e566c35b5db41426d383f8f092cc217", kill_on_drop: false }`
[INFO] [stdout] 4fa486acb4ee6ef053b03701112a8b1d8e566c35b5db41426d383f8f092cc217
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cad034017458b2a4f76f181c0ff1c56647f108c6702d093a93a07d85321003c6
[INFO] running `Command { std: "docker" "start" "-a" "cad034017458b2a4f76f181c0ff1c56647f108c6702d093a93a07d85321003c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking lexical-core v0.7.5
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking AoC2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `AoC2020` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `ao_c2020`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `AoC2020` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `ao_c2020`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ecl`
[INFO] [stdout]  --> src/bin/day4.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   ecl: String,
[INFO] [stdout]   |   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pid`
[INFO] [stdout]   --> src/bin/day4.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pid: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `eyr`
[INFO] [stdout]   --> src/bin/day4.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   eyr: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hcl`
[INFO] [stdout]   --> src/bin/day4.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   hcl: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `byr`
[INFO] [stdout]   --> src/bin/day4.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 |   byr: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `iyr`
[INFO] [stdout]   --> src/bin/day4.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   iyr: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cid`
[INFO] [stdout]   --> src/bin/day4.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 |   cid: Option<String>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hgt`
[INFO] [stdout]   --> src/bin/day4.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   hgt: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::RangeInclusive`
[INFO] [stdout]  --> src/bin/day18.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::RangeInclusive;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/bin/day18.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::{HashSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/bin/day18.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{min, max};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]   --> src/bin/day18.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::fmt;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Formatter`
[INFO] [stdout]   --> src/bin/day18.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::fmt::Formatter;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bin/day17.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |   fn new() -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bin/day17.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 |   fn new() -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_inactive`
[INFO] [stdout]    --> src/bin/day17.rs:177:6
[INFO] [stdout]     |
[INFO] [stdout] 177 |   fn set_inactive(&mut self, x: isize, y: isize, z: isize)
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_inactive`
[INFO] [stdout]    --> src/bin/day17.rs:222:6
[INFO] [stdout]     |
[INFO] [stdout] 222 |   fn set_inactive(&mut self, x: isize, y: isize, z: isize, w: isize)
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::RangeInclusive`
[INFO] [stdout]  --> src/bin/day18.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::RangeInclusive;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/bin/day18.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::{HashSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/bin/day18.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{min, max};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]   --> src/bin/day18.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::fmt;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Formatter`
[INFO] [stdout]   --> src/bin/day18.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use std::fmt::Formatter;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `row`
[INFO] [stdout]   --> src/bin/day5.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 |   row: u16,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `col`
[INFO] [stdout]   --> src/bin/day5.rs:27:3
[INFO] [stdout]    |
[INFO] [stdout] 27 |   col: u16,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::RangeInclusive`
[INFO] [stdout]  --> src/bin/day19.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::RangeInclusive;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/bin/day19.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::{HashSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/bin/day19.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{min, max};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::RangeInclusive`
[INFO] [stdout]  --> src/bin/day19.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::RangeInclusive;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/bin/day19.rs:3:24
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::{HashSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/bin/day19.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp::{min, max};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ecl`
[INFO] [stdout]  --> src/bin/day4.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   ecl: String,
[INFO] [stdout]   |   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pid`
[INFO] [stdout]   --> src/bin/day4.rs:10:3
[INFO] [stdout]    |
[INFO] [stdout] 10 |   pid: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `eyr`
[INFO] [stdout]   --> src/bin/day4.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   eyr: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hcl`
[INFO] [stdout]   --> src/bin/day4.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   hcl: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `byr`
[INFO] [stdout]   --> src/bin/day4.rs:13:3
[INFO] [stdout]    |
[INFO] [stdout] 13 |   byr: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `iyr`
[INFO] [stdout]   --> src/bin/day4.rs:14:3
[INFO] [stdout]    |
[INFO] [stdout] 14 |   iyr: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cid`
[INFO] [stdout]   --> src/bin/day4.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 |   cid: Option<String>,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `hgt`
[INFO] [stdout]   --> src/bin/day4.rs:16:3
[INFO] [stdout]    |
[INFO] [stdout] 16 |   hgt: String,
[INFO] [stdout]    |   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `row`
[INFO] [stdout]   --> src/bin/day5.rs:26:3
[INFO] [stdout]    |
[INFO] [stdout] 26 |   row: u16,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `col`
[INFO] [stdout]   --> src/bin/day5.rs:27:3
[INFO] [stdout]    |
[INFO] [stdout] 27 |   col: u16,
[INFO] [stdout]    |   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bin/day17.rs:23:6
[INFO] [stdout]    |
[INFO] [stdout] 23 |   fn new() -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/bin/day17.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 |   fn new() -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_inactive`
[INFO] [stdout]    --> src/bin/day17.rs:222:6
[INFO] [stdout]     |
[INFO] [stdout] 222 |   fn set_inactive(&mut self, x: isize, y: isize, z: isize, w: isize)
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `expand_rule`
[INFO] [stdout]   --> src/bin/day19.rs:52:4
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn expand_rule(rule: &Rule, rules: &HashMap<usize, Rule>) -> Rule
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `expand_rules`
[INFO] [stdout]   --> src/bin/day19.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn expand_rules(rules: &HashMap<usize, Rule>) -> HashMap<usize, Rule>
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.21s
[INFO] running `Command { std: "docker" "inspect" "cad034017458b2a4f76f181c0ff1c56647f108c6702d093a93a07d85321003c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cad034017458b2a4f76f181c0ff1c56647f108c6702d093a93a07d85321003c6", kill_on_drop: false }`
[INFO] [stdout] cad034017458b2a4f76f181c0ff1c56647f108c6702d093a93a07d85321003c6