[INFO] cloning repository https://github.com/raywiis/Advent-of-Code-2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/raywiis/Advent-of-Code-2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraywiis%2FAdvent-of-Code-2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraywiis%2FAdvent-of-Code-2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bee66aac93306b463e0ab549afd80cd4085396d3
[INFO] building raywiis/Advent-of-Code-2019 against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fraywiis%2FAdvent-of-Code-2019" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/raywiis/Advent-of-Code-2019 on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/raywiis/Advent-of-Code-2019
[INFO] finished tweaking git repo https://github.com/raywiis/Advent-of-Code-2019
[INFO] tweaked toml for git repo https://github.com/raywiis/Advent-of-Code-2019 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/raywiis/Advent-of-Code-2019 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2741eb54d874e732f01fd0ae712bb4864089e5eec279d64c352cc42666f6309f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2741eb54d874e732f01fd0ae712bb4864089e5eec279d64c352cc42666f6309f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2741eb54d874e732f01fd0ae712bb4864089e5eec279d64c352cc42666f6309f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2741eb54d874e732f01fd0ae712bb4864089e5eec279d64c352cc42666f6309f", kill_on_drop: false }`
[INFO] [stdout] 2741eb54d874e732f01fd0ae712bb4864089e5eec279d64c352cc42666f6309f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e363260f7fecfc29ea1b339f3736652ed6dc1660a6c0848cbc892428d4b35314
[INFO] running `Command { std: "docker" "start" "-a" "e363260f7fecfc29ea1b339f3736652ed6dc1660a6c0848cbc892428d4b35314", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling advent-of-code-2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/lib.rs:51:25
[INFO] [stdout]    |
[INFO] [stdout] 51 |                     let target = memory[instruction_ptr + 3];
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]   --> src/lib.rs:60:25
[INFO] [stdout]    |
[INFO] [stdout] 60 |                     let target = memory[instruction_ptr + 3];
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `backup_mode`
[INFO] [stdout]   --> src/lib.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 75 |                     let backup_mode = match modes.0 {
[INFO] [stdout]    |                         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_backup_mode`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `destination_ptr`
[INFO] [stdout]   --> src/lib.rs:80:25
[INFO] [stdout]    |
[INFO] [stdout] 80 |                     let destination_ptr = memory[instruction_ptr + 1];
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_destination_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/bin/10.rs:261:16
[INFO] [stdout]     |
[INFO] [stdout] 261 |         ans1 = (0. + asin) ;
[INFO] [stdout]     |                ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/bin/10.rs:263:16
[INFO] [stdout]     |
[INFO] [stdout] 263 |         ans1 = (std::f64::consts::PI - asin) ;
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/bin/10.rs:265:16
[INFO] [stdout]     |
[INFO] [stdout] 265 |         ans1 = (std::f64::consts::PI + asin) ;
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/bin/10.rs:267:16
[INFO] [stdout]     |
[INFO] [stdout] 267 |         ans1 = (std::f64::consts::PI * 2.0 - asin) ;
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]    --> src/bin/10.rs:167:16
[INFO] [stdout]     |
[INFO] [stdout] 167 |         .map(|(point, angle)| get_radians(&angle))
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ans`
[INFO] [stdout]    --> src/bin/10.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 247 |     let mut ans: f64 = 0.0;
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_ans`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ans1` is never read
[INFO] [stdout]    --> src/bin/10.rs:248:13
[INFO] [stdout]     |
[INFO] [stdout] 248 |     let mut ans1: f64 = 0.0;
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `phase`
[INFO] [stdout]   --> src/bin/16.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     for phase in 0..100 {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_phase`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `signal` is never read
[INFO] [stdout]   --> src/bin/16.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |         signal = vec!();
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `phase`
[INFO] [stdout]   --> src/bin/16.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |     for phase in 0..phase_count {
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_phase`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::default::Default`
[INFO] [stdout]  --> src/bin/13.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/10.rs:247:9
[INFO] [stdout]     |
[INFO] [stdout] 247 |     let mut ans: f64 = 0.0;
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp`
[INFO] [stdout]  --> src/bin/3_1.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::cmp;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/bin/5.rs:87:17
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 std::mem::replace(&mut memory[target as usize], a + b);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/bin/5.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |                 std::mem::replace(&mut memory[target as usize], a * b);
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufReader`, `Result`
[INFO] [stdout]  --> src/bin/14.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{prelude::*, BufReader, Result};
[INFO] [stdout]   |                           ^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/bin/8.rs:26:24
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pixel_count %= (width * height);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/bin/7.rs:77:24
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let exit = execute(&mut memory, &inputs, &mut outputs);
[INFO] [stdout]    |                        ^^^^^^^^^^^ expected `i64`, found `i32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut Vec<i64>`
[INFO] [stdout]               found mutable reference `&mut Vec<i32>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/bin/7.rs:77:37
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let exit = execute(&mut memory, &inputs, &mut outputs);
[INFO] [stdout]    |                                     ^^^^^^^ expected slice `[i64]`, found struct `Vec`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&[i64]`
[INFO] [stdout]               found reference `&Vec<i32>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/bin/7.rs:77:46
[INFO] [stdout]    |
[INFO] [stdout] 77 |     let exit = execute(&mut memory, &inputs, &mut outputs);
[INFO] [stdout]    |                                              ^^^^^^^^^^^^ expected `i64`, found `i32`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected mutable reference `&mut Vec<i64>`
[INFO] [stdout]               found mutable reference `&mut Vec<i32>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `advent-of-code-2019`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `ExitCode`
[INFO] [stdout]  --> src/bin/15.rs:1:45
[INFO] [stdout]   |
[INFO] [stdout] 1 | use advent_of_code_2019::intcode::{execute, ExitCode};
[INFO] [stdout]   |                                             ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]   --> src/bin/15.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 |     while true {
[INFO] [stdout]    |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `layer_count` is assigned to, but never used
[INFO] [stdout]   --> src/bin/8.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |     let mut layer_count = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]    = note: consider using `_layer_count` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude`
[INFO] [stdout]  --> src/bin/14.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::{prelude::*, BufReader, Result};
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fuel_count`
[INFO] [stdout]    --> src/bin/14.rs:180:13
[INFO] [stdout]     |
[INFO] [stdout] 180 |     let mut fuel_count = 0;
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fuel_count`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stdin_lines`
[INFO] [stdout]   --> src/bin/15.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut stdin_lines = stdin.lock().lines();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stdin_lines`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `wave` is never read
[INFO] [stdout]    --> src/bin/15.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |     let mut wave = vec!();
[INFO] [stdout]     |             ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/bin/15.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 210 |     for (k, v) in map.iter() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/14.rs:180:9
[INFO] [stdout]     |
[INFO] [stdout] 180 |     let mut fuel_count = 0;
[INFO] [stdout]     |         ----^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `INPUT` should have a snake case name
[INFO] [stdout]   --> src/bin/14.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let INPUT = "13 RXWQR => 4 JXCXB
[INFO] [stdout]    |         ^^^^^ help: convert the identifier to snake case: `input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/15.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut stdin_lines = stdin.lock().lines();
[INFO] [stdout]    |         ----^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `probe`
[INFO] [stdout]    --> src/bin/15.rs:196:4
[INFO] [stdout]     |
[INFO] [stdout] 196 | fn probe(robot: &mut Robot, direction: char, map: &mut HashMap<(i32, i32), char>) -> char {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `show_map`
[INFO] [stdout]    --> src/bin/15.rs:204:4
[INFO] [stdout]     |
[INFO] [stdout] 204 | fn show_map(map: &HashMap<(i32, i32), char>) {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/13.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut oog = oof.next().unwrap_or(Ok(String::from("2"))).unwrap_or(String::from("2"));
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e363260f7fecfc29ea1b339f3736652ed6dc1660a6c0848cbc892428d4b35314", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e363260f7fecfc29ea1b339f3736652ed6dc1660a6c0848cbc892428d4b35314", kill_on_drop: false }`
[INFO] [stdout] e363260f7fecfc29ea1b339f3736652ed6dc1660a6c0848cbc892428d4b35314
