[INFO] cloning repository https://github.com/dedraks/rchip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dedraks/rchip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdedraks%2Frchip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdedraks%2Frchip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ff962766e0d48ea302e1f7fe41d4bd388d5a135f
[INFO] checking dedraks/rchip8 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdedraks%2Frchip8" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dedraks/rchip8
[INFO] finished tweaking git repo https://github.com/dedraks/rchip8
[INFO] tweaked toml for git repo https://github.com/dedraks/rchip8 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dedraks/rchip8 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dedraks/rchip8 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1702966456b46d1ff283948c0bdb961eeb324a85eb1d1361c66fdb7160936f52
[INFO] running `Command { std: "docker" "start" "-a" "1702966456b46d1ff283948c0bdb961eeb324a85eb1d1361c66fdb7160936f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1702966456b46d1ff283948c0bdb961eeb324a85eb1d1361c66fdb7160936f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1702966456b46d1ff283948c0bdb961eeb324a85eb1d1361c66fdb7160936f52", kill_on_drop: false }`
[INFO] [stdout] 1702966456b46d1ff283948c0bdb961eeb324a85eb1d1361c66fdb7160936f52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0ce806cb7729c8c9d1ddc4ae41488695bcab6112541e37dcd19b9b94dd98b15
[INFO] running `Command { std: "docker" "start" "-a" "d0ce806cb7729c8c9d1ddc4ae41488695bcab6112541e37dcd19b9b94dd98b15", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking symphonia-core v0.5.3
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]     Checking ogg v0.8.0
[INFO] [stderr]     Checking clap_lex v0.5.1
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]     Checking hound v3.5.1
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]     Checking clap_builder v4.4.6
[INFO] [stderr]     Checking lewton v0.10.2
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]     Checking symphonia-metadata v0.5.3
[INFO] [stderr]     Checking symphonia-bundle-mp3 v0.5.3
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking parking_lot_core v0.9.8
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking symphonia v0.5.3
[INFO] [stderr]     Checking alsa v0.7.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rodio v0.17.1
[INFO] [stderr]    Compiling clap_derive v4.4.2
[INFO] [stderr]     Checking clap v4.4.6
[INFO] [stderr]     Checking rchip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::env;
[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: `std::process::exit`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time`
[INFO] [stdout]  --> src/chip8/chip8.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::{thread, time};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::chip8::chip8::thread::JoinHandle`
[INFO] [stdout]  --> src/chip8/chip8.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::chip8::chip8::thread::JoinHandle;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::rect`
[INFO] [stdout]  --> src/chip8/screen.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sdl2::rect;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::render::Canvas`
[INFO] [stdout]  --> src/chip8/screen.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sdl2::render::Canvas;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Decoder`
[INFO] [stdout]  --> src/chip8/synth.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rodio::{Decoder, OutputStream, Sink, OutputStreamHandle};
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Amplify`
[INFO] [stdout]  --> src/chip8/synth.rs:2:39
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rodio::source::{SineWave, Source, Amplify};
[INFO] [stdout]   |                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread` and `time`
[INFO] [stdout]  --> src/chip8/synth.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{thread, time};
[INFO] [stdout]   |           ^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::env;
[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: `std::process::exit`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time`
[INFO] [stdout]  --> src/chip8/chip8.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::{thread, time};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::chip8::chip8::thread::JoinHandle`
[INFO] [stdout]  --> src/chip8/chip8.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::chip8::chip8::thread::JoinHandle;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::rect`
[INFO] [stdout]  --> src/chip8/screen.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use sdl2::rect;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::render::Canvas`
[INFO] [stdout]  --> src/chip8/screen.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sdl2::render::Canvas;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Decoder`
[INFO] [stdout]  --> src/chip8/synth.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rodio::{Decoder, OutputStream, Sink, OutputStreamHandle};
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Amplify`
[INFO] [stdout]  --> src/chip8/synth.rs:2:39
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rodio::source::{SineWave, Source, Amplify};
[INFO] [stdout]   |                                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `thread` and `time`
[INFO] [stdout]  --> src/chip8/synth.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{thread, time};
[INFO] [stdout]   |           ^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `display_mode`
[INFO] [stdout]   --> src/chip8/screen.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let display_mode = sdl_context.video().unwrap().current_display_mode(0).unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_display_mode`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `display_mode`
[INFO] [stdout]   --> src/chip8/screen.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |         let display_mode = sdl_context.video().unwrap().current_display_mode(0).unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_display_mode`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/chip8/screen.rs:163:93
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn render_debug(&mut self, pc: u16, v: [u8; 16], dt: u8, st: u8, sp: usize, i: u16, stack: [u16; 16]) {
[INFO] [stdout]     |                                                                                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/chip8/screen.rs:246:13
[INFO] [stdout]     |
[INFO] [stdout] 246 |         for i in 0..sp {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack`
[INFO] [stdout]    --> src/chip8/screen.rs:163:93
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn render_debug(&mut self, pc: u16, v: [u8; 16], dt: u8, st: u8, sp: usize, i: u16, stack: [u16; 16]) {
[INFO] [stdout]     |                                                                                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_stack`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/chip8/screen.rs:246:13
[INFO] [stdout]     |
[INFO] [stdout] 246 |         for i in 0..sp {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_debug_level` is never used
[INFO] [stdout]    --> src/chip8/chip8.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout]  79 | impl CHIP8 {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 135 |     pub fn set_debug_level(&mut self, debug_level: u32) {
[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 `normalize_coordinates` is never used
[INFO] [stdout]   --> src/chip8/screen.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn normalize_coordinates(x: u8, y: u8) -> (usize, usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `idx` is never used
[INFO] [stdout]   --> src/chip8/screen.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn idx(x: usize, y: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DISPLAY_SCALE` is never used
[INFO] [stdout]   --> src/chip8/screen.rs:38:7
[INFO] [stdout]    |
[INFO] [stdout] 38 | const DISPLAY_SCALE: usize = 20;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `video_subsystem` is never read
[INFO] [stdout]   --> src/chip8/screen.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Screen {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 45 |     video_subsystem: sdl2::VideoSubsystem,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `stream` and `stream_handle` are never read
[INFO] [stdout]  --> src/chip8/synth.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Synth {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 6 |     sink: Sink,
[INFO] [stdout] 7 |     stream: OutputStream,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     stream_handle: OutputStreamHandle,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_debug_level` is never used
[INFO] [stdout]    --> src/chip8/chip8.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout]  79 | impl CHIP8 {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 135 |     pub fn set_debug_level(&mut self, debug_level: u32) {
[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 `normalize_coordinates` is never used
[INFO] [stdout]   --> src/chip8/screen.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn normalize_coordinates(x: u8, y: u8) -> (usize, usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `idx` is never used
[INFO] [stdout]   --> src/chip8/screen.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn idx(x: usize, y: usize) -> usize {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DISPLAY_SCALE` is never used
[INFO] [stdout]   --> src/chip8/screen.rs:38:7
[INFO] [stdout]    |
[INFO] [stdout] 38 | const DISPLAY_SCALE: usize = 20;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `video_subsystem` is never read
[INFO] [stdout]   --> src/chip8/screen.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Screen {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 45 |     video_subsystem: sdl2::VideoSubsystem,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `stream` and `stream_handle` are never read
[INFO] [stdout]  --> src/chip8/synth.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Synth {
[INFO] [stdout]   |            ----- fields in this struct
[INFO] [stdout] 6 |     sink: Sink,
[INFO] [stdout] 7 |     stream: OutputStream,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     stream_handle: OutputStreamHandle,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/chip8/screen.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |         self.canvas.window_mut().set_title(title);
[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] 114 |         let _ = self.canvas.window_mut().set_title(title);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/chip8/screen.rs:114:9
[INFO] [stdout]     |
[INFO] [stdout] 114 |         self.canvas.window_mut().set_title(title);
[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] 114 |         let _ = self.canvas.window_mut().set_title(title);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.73s
[INFO] running `Command { std: "docker" "inspect" "d0ce806cb7729c8c9d1ddc4ae41488695bcab6112541e37dcd19b9b94dd98b15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0ce806cb7729c8c9d1ddc4ae41488695bcab6112541e37dcd19b9b94dd98b15", kill_on_drop: false }`
[INFO] [stdout] d0ce806cb7729c8c9d1ddc4ae41488695bcab6112541e37dcd19b9b94dd98b15
