[INFO] cloning repository https://github.com/The-Ludwig/Rustvent2024
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/The-Ludwig/Rustvent2024" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThe-Ludwig%2FRustvent2024", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThe-Ludwig%2FRustvent2024'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ec45d0e44f6d84cbaf88944d5d352efb69a82f2
[INFO] checking The-Ludwig/Rustvent2024 against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FThe-Ludwig%2FRustvent2024" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/The-Ludwig/Rustvent2024
[INFO] finished tweaking git repo https://github.com/The-Ludwig/Rustvent2024
[INFO] tweaked toml for git repo https://github.com/The-Ludwig/Rustvent2024 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/The-Ludwig/Rustvent2024 on toolchain 3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/The-Ludwig/Rustvent2024 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" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f149b7076e290b499ddd049cd60a717f980025f8fabb5eef0d64afb7fe6068b
[INFO] running `Command { std: "docker" "start" "-a" "3f149b7076e290b499ddd049cd60a717f980025f8fabb5eef0d64afb7fe6068b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f149b7076e290b499ddd049cd60a717f980025f8fabb5eef0d64afb7fe6068b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f149b7076e290b499ddd049cd60a717f980025f8fabb5eef0d64afb7fe6068b", kill_on_drop: false }`
[INFO] [stdout] 3f149b7076e290b499ddd049cd60a717f980025f8fabb5eef0d64afb7fe6068b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a617c58fa33968331fa8c612bbadb95b40165957a95567ba68d972eb237c038f
[INFO] running `Command { std: "docker" "start" "-a" "a617c58fa33968331fa8c612bbadb95b40165957a95567ba68d972eb237c038f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling curl v0.4.44
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]    Compiling libz-sys v1.1.12
[INFO] [stderr]    Compiling openssl-sys v0.9.96
[INFO] [stderr]    Compiling curl-sys v0.4.68+curl-8.4.0
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking rustvent2023 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Map` is never constructed
[INFO] [stdout]   --> src/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Map<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_str` is never used
[INFO] [stdout]   --> src/lib.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl<T: TryFrom<char>> Map<T> {
[INFO] [stdout]    | ----------------------------- associated function in this implementation
[INFO] [stdout] 64 |     fn from_str(s: &str) -> Map<T> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_index`, `get`, and `get_mut` are never used
[INFO] [stdout]   --> src/lib.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | impl<T> Map<T> {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 84 |     fn get_index(&self, pos: &Pos) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn get(&self, pos: &Pos) -> Option<&T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |     fn get_mut(&mut self, pos: &Pos) -> Option<&mut T> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Map` is never constructed
[INFO] [stdout]   --> src/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct Map<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_str` is never used
[INFO] [stdout]   --> src/lib.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl<T: TryFrom<char>> Map<T> {
[INFO] [stdout]    | ----------------------------- associated function in this implementation
[INFO] [stdout] 64 |     fn from_str(s: &str) -> Map<T> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_index`, `get`, and `get_mut` are never used
[INFO] [stdout]   --> src/lib.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 83 | impl<T> Map<T> {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 84 |     fn get_index(&self, pos: &Pos) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn get(&self, pos: &Pos) -> Option<&T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |     fn get_mut(&mut self, pos: &Pos) -> Option<&mut T> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `From` and `TryFrom`
[INFO] [stdout]  --> src/bin/day11.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::{From, Into, TryFrom};
[INFO] [stdout]   |                    ^^^^        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/bin/day11.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `From` and `TryFrom`
[INFO] [stdout]  --> src/bin/day11.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::{From, Into, TryFrom};
[INFO] [stdout]   |                    ^^^^        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/bin/day11.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/bin/day02.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/bin/day02.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]  --> src/bin/day09.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lazy_static::lazy_static;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]  --> src/bin/day09.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use regex::Regex;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/bin/day09.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `usize`
[INFO] [stdout]  --> src/bin/day09.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{time, usize};
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cap`
[INFO] [stdout]   --> src/bin/day02.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let cap = RE.captures(s).ok_or("Not a valid box description")?;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_cap`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/bin/day08.rs:210:5
[INFO] [stdout]     |
[INFO] [stdout] 208 |     return Ok(());
[INFO] [stdout]     |     ------------- any code following this expression is unreachable
[INFO] [stdout] 209 |
[INFO] [stdout] 210 |     let now = time::Instant::now();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RangeBounds`
[INFO] [stdout]  --> src/bin/day05.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Range, RangeBounds};
[INFO] [stdout]   |                       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Card2::*`
[INFO] [stdout]    --> src/bin/day07.rs:251:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use Card2::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/bin/day08.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn parse(input: &str) -> (Vec<Dir>, Map) {
[INFO] [stdout]    |                 ^^^^                --- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn parse(input: &str) -> (Vec<Dir>, Map<'_>) {
[INFO] [stdout]    |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cap`
[INFO] [stdout]   --> src/bin/day02.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let cap = RE.captures(s).ok_or("Not a valid box description")?;
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_cap`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RangeBounds`
[INFO] [stdout]  --> src/bin/day05.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::{Range, RangeBounds};
[INFO] [stdout]   |                       ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lazy_static::lazy_static`
[INFO] [stdout]  --> src/bin/day09.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use lazy_static::lazy_static;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Card2::*`
[INFO] [stdout]    --> src/bin/day07.rs:251:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use Card2::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `regex::Regex`
[INFO] [stdout]  --> src/bin/day09.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use regex::Regex;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/bin/day09.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `usize`
[INFO] [stdout]  --> src/bin/day09.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{time, usize};
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_str` is never used
[INFO] [stdout]    --> src/bin/day10.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | impl<T: TryFrom<char>> Map<T> {
[INFO] [stdout]     | ----------------------------- associated function in this implementation
[INFO] [stdout] 124 |     fn from_str(s: &str) -> Map<T> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/bin/day07.rs:113:19
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn cmp(&self, other: &AllwaysEqual<T>) -> Ordering {
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]    --> src/bin/day07.rs:113:19
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn cmp(&self, other: &AllwaysEqual<T>) -> Ordering {
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/bin/day08.rs:210:5
[INFO] [stdout]     |
[INFO] [stdout] 208 |     return Ok(());
[INFO] [stdout]     |     ------------- any code following this expression is unreachable
[INFO] [stdout] 209 |
[INFO] [stdout] 210 |     let now = time::Instant::now();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_str` is never used
[INFO] [stdout]    --> src/bin/day10.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 123 | impl<T: TryFrom<char>> Map<T> {
[INFO] [stdout]     | ----------------------------- associated function in this implementation
[INFO] [stdout] 124 |     fn from_str(s: &str) -> Map<T> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/bin/day08.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn parse(input: &str) -> (Vec<Dir>, Map) {
[INFO] [stdout]    |                 ^^^^                --- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn parse(input: &str) -> (Vec<Dir>, Map<'_>) {
[INFO] [stdout]    |                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.53s
[INFO] running `Command { std: "docker" "inspect" "a617c58fa33968331fa8c612bbadb95b40165957a95567ba68d972eb237c038f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a617c58fa33968331fa8c612bbadb95b40165957a95567ba68d972eb237c038f", kill_on_drop: false }`
[INFO] [stdout] a617c58fa33968331fa8c612bbadb95b40165957a95567ba68d972eb237c038f
