[INFO] cloning repository https://github.com/Raunak-S/chip-8-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Raunak-S/chip-8-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaunak-S%2Fchip-8-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaunak-S%2Fchip-8-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e16042159743b95600e7946bedbd2f676e215fd
[INFO] checking Raunak-S/chip-8-rs against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaunak-S%2Fchip-8-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Raunak-S/chip-8-rs
[INFO] finished tweaking git repo https://github.com/Raunak-S/chip-8-rs
[INFO] tweaked toml for git repo https://github.com/Raunak-S/chip-8-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Raunak-S/chip-8-rs on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Raunak-S/chip-8-rs 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking Raunak-S/chip-8-rs against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaunak-S%2Fchip-8-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Raunak-S/chip-8-rs
[INFO] finished tweaking git repo https://github.com/Raunak-S/chip-8-rs
[INFO] tweaked toml for git repo https://github.com/Raunak-S/chip-8-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Raunak-S/chip-8-rs on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Raunak-S/chip-8-rs 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking Raunak-S/chip-8-rs against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaunak-S%2Fchip-8-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Raunak-S/chip-8-rs
[INFO] finished tweaking git repo https://github.com/Raunak-S/chip-8-rs
[INFO] tweaked toml for git repo https://github.com/Raunak-S/chip-8-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Raunak-S/chip-8-rs on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Raunak-S/chip-8-rs 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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 parking_lot_core v0.9.5
[INFO] [stderr]   Downloaded version-compare v0.1.0
[INFO] [stderr]   Downloaded sdl2 v0.35.2
[INFO] [stderr]   Downloaded mio v0.8.5
[INFO] [stderr]   Downloaded sdl2-sys v0.35.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b30454e61c3ee4e4169031af612112ae6996d6a786959e46194e674b0a40749
[INFO] running `Command { std: "docker" "start" "-a" "4b30454e61c3ee4e4169031af612112ae6996d6a786959e46194e674b0a40749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b30454e61c3ee4e4169031af612112ae6996d6a786959e46194e674b0a40749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b30454e61c3ee4e4169031af612112ae6996d6a786959e46194e674b0a40749", kill_on_drop: false }`
[INFO] [stdout] 4b30454e61c3ee4e4169031af612112ae6996d6a786959e46194e674b0a40749
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cef3174ea4eae618e752fc00811f84d86d74787044a074c0fba957dd5f19e554
[INFO] running `Command { std: "docker" "start" "-a" "cef3174ea4eae618e752fc00811f84d86d74787044a074c0fba957dd5f19e554", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.133
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.5
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking chip-8-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `keyboard::Keycode`
[INFO] [stdout]  --> src/display/mod.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sdl2::{keyboard::Keycode, pixels::Color, render::Canvas, video::Window, Sdl, rect::Point};
[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 label
[INFO] [stdout]   --> src/display/mod.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         'running: loop {
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/emulator/mod.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::Read, time::Duration, collections::HashMap};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Event`, `KeyCode`, `poll`, and `read`
[INFO] [stdout]  --> src/emulator/mod.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crossterm::event::{read, poll, Event, KeyCode};
[INFO] [stdout]   |                        ^^^^  ^^^^  ^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::display::Display`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::display::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io::Read` and `path::Path`
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::{io::Read, path::Path};
[INFO] [stdout]   |           ^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `keyboard::Keycode`
[INFO] [stdout]  --> src/display/mod.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sdl2::{keyboard::Keycode, pixels::Color, render::Canvas, video::Window, Sdl, rect::Point};
[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 label
[INFO] [stdout]   --> src/display/mod.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         'running: loop {
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]  --> src/emulator/mod.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{io::Read, time::Duration, collections::HashMap};
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Event`, `KeyCode`, `poll`, and `read`
[INFO] [stdout]  --> src/emulator/mod.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crossterm::event::{read, poll, Event, KeyCode};
[INFO] [stdout]   |                        ^^^^  ^^^^  ^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::display::Display`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::display::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `io::Read` and `path::Path`
[INFO] [stdout]  --> src/main.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::{io::Read, path::Path};
[INFO] [stdout]   |           ^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/emulator/mod.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout]  95 | /         loop {
[INFO] [stdout] ...   |
[INFO] [stdout] 200 | |             ::std::thread::sleep(std::time::Duration::from_millis(500));
[INFO] [stdout] 201 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 202 |
[INFO] [stdout] 203 |           Ok(())
[INFO] [stdout]     |           ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path_to_font`
[INFO] [stdout]   --> src/emulator/mod.rs:66:33
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn load_font(&mut self, path_to_font: &str) {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_path_to_font`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/emulator/mod.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout]  95 | /         loop {
[INFO] [stdout] ...   |
[INFO] [stdout] 200 | |             ::std::thread::sleep(std::time::Duration::from_millis(500));
[INFO] [stdout] 201 | |         }
[INFO] [stdout]     | |_________- any code following this expression is unreachable
[INFO] [stdout] 202 |
[INFO] [stdout] 203 |           Ok(())
[INFO] [stdout]     |           ^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event_sender`
[INFO] [stdout]   --> src/emulator/mod.rs:72:27
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn run(&mut self, event_sender: Option<EventSender>) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |                           ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_event_sender`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymap`
[INFO] [stdout]   --> src/emulator/mod.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let keymap: HashMap<char, u8> = HashMap::from([
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_keymap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Event` is never used
[INFO] [stdout]  --> src/display/mod.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub(crate) enum Event {
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sdl_context` is never read
[INFO] [stdout]   --> src/display/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) struct Display {
[INFO] [stdout]    |                   ------- field in this struct
[INFO] [stdout] 13 |     pub sdl_context: Sdl,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_event_pump`, `get_key`, and `run` are never used
[INFO] [stdout]   --> src/display/mod.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Display {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn get_event_pump(&self) -> sdl2::EventPump {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn get_key(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     pub fn run(&mut self) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stack` is never read
[INFO] [stdout]   --> src/emulator/mod.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub(crate) struct Emulator {
[INFO] [stdout]    |                   -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub stack: Vec<u16>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `load_font` is never used
[INFO] [stdout]   --> src/emulator/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Emulator {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 66 |     pub fn load_font(&mut self, path_to_font: &str) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path_to_font`
[INFO] [stdout]   --> src/emulator/mod.rs:66:33
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn load_font(&mut self, path_to_font: &str) {
[INFO] [stdout]    |                                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_path_to_font`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event_sender`
[INFO] [stdout]   --> src/emulator/mod.rs:72:27
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn run(&mut self, event_sender: Option<EventSender>) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |                           ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_event_sender`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymap`
[INFO] [stdout]   --> src/emulator/mod.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let keymap: HashMap<char, u8> = HashMap::from([
[INFO] [stdout]    |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_keymap`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Event` is never used
[INFO] [stdout]  --> src/display/mod.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub(crate) enum Event {
[INFO] [stdout]   |                 ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sdl_context` is never read
[INFO] [stdout]   --> src/display/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub(crate) struct Display {
[INFO] [stdout]    |                   ------- field in this struct
[INFO] [stdout] 13 |     pub sdl_context: Sdl,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_event_pump`, `get_key`, and `run` are never used
[INFO] [stdout]   --> src/display/mod.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Display {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn get_event_pump(&self) -> sdl2::EventPump {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |     pub fn get_key(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     pub fn run(&mut self) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stack` is never read
[INFO] [stdout]   --> src/emulator/mod.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub(crate) struct Emulator {
[INFO] [stdout]    |                   -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub stack: Vec<u16>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `load_font` is never used
[INFO] [stdout]   --> src/emulator/mod.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Emulator {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 66 |     pub fn load_font(&mut self, path_to_font: &str) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/emulator/mod.rs:70:24
[INFO] [stdout]    |
[INFO] [stdout] 70 |         self.registers[usize::try_from(register).unwrap()] = value;
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, usize>
[INFO] [stdout]    --> src/emulator/mod.rs:104:38
[INFO] [stdout]     |
[INFO] [stdout] 104 |             let instr_one = self.mem[usize::try_from(self.pc)?];
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:104:38
[INFO] [stdout]     |
[INFO] [stdout] 104 |             let instr_one = self.mem[usize::try_from(self.pc)?];
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, usize>
[INFO] [stdout]    --> src/emulator/mod.rs:105:38
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instr_two = self.mem[usize::try_from(self.pc)? + 1];
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:105:38
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instr_two = self.mem[usize::try_from(self.pc)? + 1];
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:130:39
[INFO] [stdout]     |
[INFO] [stdout] 130 |                     if self.registers[usize::try_from(r_index).unwrap()] == instr_two {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:133:89
[INFO] [stdout]     |
[INFO] [stdout] 133 |                     println!("Skipped the next instruction if {} == {}", self.registers[usize::try_from(r_index).unwrap()],instr_two);
[INFO] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:145:36
[INFO] [stdout]     |
[INFO] [stdout] 145 |                     self.registers[usize::try_from(r_index).unwrap()] += instr_two;
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:162:55
[INFO] [stdout]     |
[INFO] [stdout] 162 |                     let mut x_coord = (self.registers[usize::try_from(x_reg_index).unwrap()] % 64) as usize;
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:163:55
[INFO] [stdout]     |
[INFO] [stdout] 163 |                     let mut y_coord = (self.registers[usize::try_from(y_reg_index).unwrap()] % 32) as usize;
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u16, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:168:52
[INFO] [stdout]     |
[INFO] [stdout] 168 |                         let sprite_addr = self.i + u16::try_from(n).unwrap();
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:169:52
[INFO] [stdout]     |
[INFO] [stdout] 169 |                         let sprite_byte = self.mem[usize::try_from(sprite_addr).unwrap()];
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/emulator/mod.rs:70:24
[INFO] [stdout]    |
[INFO] [stdout] 70 |         self.registers[usize::try_from(register).unwrap()] = value;
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, usize>
[INFO] [stdout]    --> src/emulator/mod.rs:104:38
[INFO] [stdout]     |
[INFO] [stdout] 104 |             let instr_one = self.mem[usize::try_from(self.pc)?];
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:104:38
[INFO] [stdout]     |
[INFO] [stdout] 104 |             let instr_one = self.mem[usize::try_from(self.pc)?];
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, usize>
[INFO] [stdout]    --> src/emulator/mod.rs:105:38
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instr_two = self.mem[usize::try_from(self.pc)? + 1];
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:105:38
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instr_two = self.mem[usize::try_from(self.pc)? + 1];
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:130:39
[INFO] [stdout]     |
[INFO] [stdout] 130 |                     if self.registers[usize::try_from(r_index).unwrap()] == instr_two {
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:133:89
[INFO] [stdout]     |
[INFO] [stdout] 133 |                     println!("Skipped the next instruction if {} == {}", self.registers[usize::try_from(r_index).unwrap()],instr_two);
[INFO] [stdout]     |                                                                                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:145:36
[INFO] [stdout]     |
[INFO] [stdout] 145 |                     self.registers[usize::try_from(r_index).unwrap()] += instr_two;
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:162:55
[INFO] [stdout]     |
[INFO] [stdout] 162 |                     let mut x_coord = (self.registers[usize::try_from(x_reg_index).unwrap()] % 64) as usize;
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:163:55
[INFO] [stdout]     |
[INFO] [stdout] 163 |                     let mut y_coord = (self.registers[usize::try_from(y_reg_index).unwrap()] % 32) as usize;
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u16, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:168:52
[INFO] [stdout]     |
[INFO] [stdout] 168 |                         let sprite_addr = self.i + u16::try_from(n).unwrap();
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/emulator/mod.rs:169:52
[INFO] [stdout]     |
[INFO] [stdout] 169 |                         let sprite_byte = self.mem[usize::try_from(sprite_addr).unwrap()];
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chip-8-rs` (bin "chip-8-rs" test) due to 12 previous errors; 15 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `chip-8-rs` (bin "chip-8-rs") due to 12 previous errors; 15 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "cef3174ea4eae618e752fc00811f84d86d74787044a074c0fba957dd5f19e554", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cef3174ea4eae618e752fc00811f84d86d74787044a074c0fba957dd5f19e554", kill_on_drop: false }`
[INFO] [stdout] cef3174ea4eae618e752fc00811f84d86d74787044a074c0fba957dd5f19e554
