[INFO] cloning repository https://github.com/Strackeror/aoc_2021_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Strackeror/aoc_2021_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStrackeror%2Faoc_2021_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStrackeror%2Faoc_2021_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 076582e489dd9ea33b9cf4846626a81f1dcbde4b
[INFO] checking Strackeror/aoc_2021_rust against master#642c19bfc3a5c1de985bf5d0cc8207ac9d22708a for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FStrackeror%2Faoc_2021_rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Strackeror/aoc_2021_rust
[INFO] finished tweaking git repo https://github.com/Strackeror/aoc_2021_rust
[INFO] tweaked toml for git repo https://github.com/Strackeror/aoc_2021_rust written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Strackeror/aoc_2021_rust on toolchain 642c19bfc3a5c1de985bf5d0cc8207ac9d22708a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Strackeror/aoc_2021_rust 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" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded peg-runtime v0.7.0
[INFO] [stderr]   Downloaded scan_fmt v0.2.6
[INFO] [stderr]   Downloaded peg v0.7.0
[INFO] [stderr]   Downloaded peg-macros v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68a1aad983fac0344dca1bd80ded427803929bd262877856c25cfdce3f6461c5
[INFO] running `Command { std: "docker" "start" "-a" "68a1aad983fac0344dca1bd80ded427803929bd262877856c25cfdce3f6461c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68a1aad983fac0344dca1bd80ded427803929bd262877856c25cfdce3f6461c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68a1aad983fac0344dca1bd80ded427803929bd262877856c25cfdce3f6461c5", kill_on_drop: false }`
[INFO] [stdout] 68a1aad983fac0344dca1bd80ded427803929bd262877856c25cfdce3f6461c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+642c19bfc3a5c1de985bf5d0cc8207ac9d22708a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e58fda8c67a779705dc85fb9e00b26782e3cf805bb1cb79850378278e74932dc
[INFO] running `Command { std: "docker" "start" "-a" "e58fda8c67a779705dc85fb9e00b26782e3cf805bb1cb79850378278e74932dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]    Compiling peg-runtime v0.7.0
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking scan_fmt v0.2.6
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling peg-macros v0.7.0
[INFO] [stderr]     Checking peg v0.7.0
[INFO] [stderr]     Checking aoc2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/day08.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::{HashMap, HashSet},
[INFO] [stdout]   |                            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fold`
[INFO] [stdout]  --> src/day20.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::{fold, Itertools};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> src/day22.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::{HashMap, HashSet},
[INFO] [stdout]   |                   ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Display`
[INFO] [stdout]  --> src/day23.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fmt::{Debug, Display},
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]  --> src/day24.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::RefCell, collections::HashMap};
[INFO] [stdout]   |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day24.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]  --> src/day08.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::{HashMap, HashSet},
[INFO] [stdout]   |                            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fold`
[INFO] [stdout]  --> src/day20.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use itertools::{fold, Itertools};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HashMap` and `HashSet`
[INFO] [stdout]  --> src/day22.rs:2:19
[INFO] [stdout]   |
[INFO] [stdout] 2 |     collections::{HashMap, HashSet},
[INFO] [stdout]   |                   ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Display`
[INFO] [stdout]  --> src/day23.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 |     fmt::{Debug, Display},
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cell::RefCell`
[INFO] [stdout]  --> src/day24.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cell::RefCell, collections::HashMap};
[INFO] [stdout]   |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/day24.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show` is never used
[INFO] [stdout]   --> src/day20.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn show(map: &HashMap<(isize, isize), bool>) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cid` is never used
[INFO] [stdout]   --> src/day24.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn cid(c: char) -> usize {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `val` is never used
[INFO] [stdout]   --> src/day24.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn val(state: [i64; 4], p: Param) -> i64 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_expr` is never used
[INFO] [stdout]   --> src/day24.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn process_expr(expr: Expr, mut state: [i64; 4]) -> [i64; 4] {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/day22.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 |     dbg!(run("input/day22/example1.txt"));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let _ = dbg!(run("input/day22/example1.txt"));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/day22.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 148 |     dbg!(run("input/day22/example2.txt"));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 148 |     let _ = dbg!(run("input/day22/example2.txt"));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/day22.rs:153:5
[INFO] [stdout]     |
[INFO] [stdout] 153 |     dbg!(run("input/day22/input.txt"));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 153 |     let _ = dbg!(run("input/day22/input.txt"));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `V1` should have a snake case name
[INFO] [stdout]    --> src/day22.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let V1 = Volume {
[INFO] [stdout]     |         ^^ help: convert the identifier to snake case (notice the capitalization): `v1`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `V2` should have a snake case name
[INFO] [stdout]    --> src/day22.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     let V2 = Volume {
[INFO] [stdout]     |         ^^ help: convert the identifier to snake case (notice the capitalization): `v2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/day23.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 211 |     dbg!(run([[B, A], [C, D], [B, C], [D, A]]));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let _ = dbg!(run([[B, A], [C, D], [B, C], [D, A]]));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/day23.rs:216:5
[INFO] [stdout]     |
[INFO] [stdout] 216 |     dbg!(run([[C, B], [D, A], [A, D], [B, C]]));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 216 |     let _ = dbg!(run([[C, B], [D, A], [A, D], [B, C]]));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show` is never used
[INFO] [stdout]   --> src/day20.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn show(map: &HashMap<(isize, isize), bool>) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `State` is never constructed
[INFO] [stdout]  --> src/day23.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct State {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `A` is never used
[INFO] [stdout]   --> src/day23.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const A: i8 = 0;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `B` is never used
[INFO] [stdout]   --> src/day23.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 | const B: i8 = 1;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `C` is never used
[INFO] [stdout]   --> src/day23.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const C: i8 = 2;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `D` is never used
[INFO] [stdout]   --> src/day23.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const D: i8 = 3;
[INFO] [stdout]    |       ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `show`, `room_ok`, `room_depth`, and `possible_states` are never used
[INFO] [stdout]   --> src/day23.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl State {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 20 |     fn show(&self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn room_ok(&self, room: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn room_depth(&self, room: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn possible_states(self) -> Vec<(State, i32)> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_cost_to` is never used
[INFO] [stdout]    --> src/day23.rs:150:4
[INFO] [stdout]     |
[INFO] [stdout] 150 | fn min_cost_to(state: State, mem: &mut HashMap<State, Option<i64>>) -> Option<i64> {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]    --> src/day23.rs:171:4
[INFO] [stdout]     |
[INFO] [stdout] 171 | fn run(initial: [[i8; 2]; 4]) -> Result<()> {
[INFO] [stdout]     |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `cid` is never used
[INFO] [stdout]   --> src/day24.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn cid(c: char) -> usize {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `val` is never used
[INFO] [stdout]   --> src/day24.rs:44:4
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn val(state: [i64; 4], p: Param) -> i64 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_expr` is never used
[INFO] [stdout]   --> src/day24.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn process_expr(expr: Expr, mut state: [i64; 4]) -> [i64; 4] {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `processr` is never used
[INFO] [stdout]   --> src/day24.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn processr(exprs: &[Expr]) -> Option<i64> {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]  --> src/day25.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn run(path: &str) -> Result<()> {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/day25.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     run("input/day25/example.txt");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let _ = run("input/day25/example.txt");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/day25.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     run("input/day25/input.txt");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let _ = run("input/day25/input.txt");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.09s
[INFO] running `Command { std: "docker" "inspect" "e58fda8c67a779705dc85fb9e00b26782e3cf805bb1cb79850378278e74932dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e58fda8c67a779705dc85fb9e00b26782e3cf805bb1cb79850378278e74932dc", kill_on_drop: false }`
[INFO] [stdout] e58fda8c67a779705dc85fb9e00b26782e3cf805bb1cb79850378278e74932dc
