[INFO] cloning repository https://github.com/morgan-mcnabb/chip8-emulator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/morgan-mcnabb/chip8-emulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmorgan-mcnabb%2Fchip8-emulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmorgan-mcnabb%2Fchip8-emulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae31c84946194ebe5216e07cb3185e5db3db57e7
[INFO] linting morgan-mcnabb/chip8-emulator against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmorgan-mcnabb%2Fchip8-emulator" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/morgan-mcnabb/chip8-emulator
[INFO] finished tweaking git repo https://github.com/morgan-mcnabb/chip8-emulator
[INFO] tweaked toml for git repo https://github.com/morgan-mcnabb/chip8-emulator written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/morgan-mcnabb/chip8-emulator on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/morgan-mcnabb/chip8-emulator 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" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytemuck v1.14.1
[INFO] [stderr]   Downloaded winnow v0.5.36
[INFO] [stderr]   Downloaded sdl2 v0.36.0
[INFO] [stderr]   Downloaded sdl2-sys v0.36.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fedd4da87b579158742dea8e6e813f9a93a50c9a5987bb45d14f1deaba581ca1
[INFO] running `Command { std: "docker" "start" "-a" "fedd4da87b579158742dea8e6e813f9a93a50c9a5987bb45d14f1deaba581ca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fedd4da87b579158742dea8e6e813f9a93a50c9a5987bb45d14f1deaba581ca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fedd4da87b579158742dea8e6e813f9a93a50c9a5987bb45d14f1deaba581ca1", kill_on_drop: false }`
[INFO] [stdout] fedd4da87b579158742dea8e6e813f9a93a50c9a5987bb45d14f1deaba581ca1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa0f8bdd651da4602b16e39aaf56d1e19c5ac5a32784e5030ac9692335c774b2
[INFO] running `Command { std: "docker" "start" "-a" "aa0f8bdd651da4602b16e39aaf56d1e19c5ac5a32784e5030ac9692335c774b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling pkg-config v0.3.29
[INFO] [stderr]     Checking bytemuck v1.14.1
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]     Checking smallvec v1.13.1
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]    Compiling sdl2 v0.36.0
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]     Checking symphonia-core v0.5.3
[INFO] [stderr]    Compiling sdl2-sys v0.36.0
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]     Checking symphonia-metadata v0.5.3
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking symphonia-bundle-mp3 v0.5.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking alsa v0.7.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking symphonia v0.5.3
[INFO] [stderr]     Checking rodio v0.17.3
[INFO] [stderr]     Checking chip8-emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/display.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             renderer: renderer,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `renderer`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/display.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             event_pump: event_pump,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `event_pump`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/pixel.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |         Pixel { x: x, y: y, on: on }
[INFO] [stdout]    |                 ^^^^ help: replace it with: `x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/pixel.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 |         Pixel { x: x, y: y, on: on }
[INFO] [stdout]    |                       ^^^^ help: replace it with: `y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/pixel.rs:12:29
[INFO] [stdout]    |
[INFO] [stdout] 12 |         Pixel { x: x, y: y, on: on }
[INFO] [stdout]    |                             ^^^^^^ help: replace it with: `on`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/display.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             renderer: renderer,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `renderer`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]    = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/display.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             event_pump: event_pump,
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `event_pump`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/pixel.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 |         Pixel { x: x, y: y, on: on }
[INFO] [stdout]    |                 ^^^^ help: replace it with: `x`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/pixel.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 |         Pixel { x: x, y: y, on: on }
[INFO] [stdout]    |                       ^^^^ help: replace it with: `y`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]   --> src/pixel.rs:12:29
[INFO] [stdout]    |
[INFO] [stdout] 12 |         Pixel { x: x, y: y, on: on }
[INFO] [stdout]    |                             ^^^^^^ help: replace it with: `on`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event_pump`
[INFO] [stdout]    --> src/chip8.rs:150:72
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn handle_next_instruction(&mut self, keyboard: &mut Keyboard, event_pump: &mut EventPump) {
[INFO] [stdout]     |                                                                        ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_event_pump`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stream` is never read
[INFO] [stdout]  --> src/audio.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct AudioDriver {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     stream: OutputStream,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_register_value` and `play_sound` are never used
[INFO] [stdout]    --> src/chip8.rs:118:12
[INFO] [stdout]     |
[INFO] [stdout]  26 | impl Chip8 {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn set_register_value(&mut self, register: u8, value: u8) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn play_sound(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: it looks like you're manually copying between slices
[INFO] [stdout]   --> src/chip8.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | /         for index in 0..rom_contents.len() {
[INFO] [stdout] 78 | |             self.memory[mem_start_location + index] = rom_contents[index];
[INFO] [stdout] 79 | |         }
[INFO] [stdout]    | |_________^ help: try replacing the loop by: `self.memory[mem_start_location..(rom_contents.len() + mem_start_location)].copy_from_slice(&rom_contents[..]);`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
[INFO] [stdout]    = note: `#[warn(clippy::manual_memcpy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/chip8.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |         if height % DEFAULT_CHIP8_PIXEL_HEIGHT != 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `!height.is_multiple_of(DEFAULT_CHIP8_PIXEL_HEIGHT)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]    = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/chip8.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |         if width % DEFAULT_CHIP8_PIXEL_WIDTH != 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `!width.is_multiple_of(DEFAULT_CHIP8_PIXEL_WIDTH)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |             self.sound_timer = self.sound_timer - 1;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.sound_timer -= 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |             self.delay_timer = self.delay_timer - 1;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.delay_timer -= 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/chip8.rs:422:24
[INFO] [stdout]     |
[INFO] [stdout] 422 |                     if !(index >= self.memory.len() - 2) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(index < self.memory.len() - 2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/chip8.rs:442:24
[INFO] [stdout]     |
[INFO] [stdout] 442 |                     if !(i >= self.memory.len() - 2) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(i < self.memory.len() - 2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/chip8.rs:193:17
[INFO] [stdout]     |
[INFO] [stdout] 193 | /                 if self.registers[x_index] == nn {
[INFO] [stdout] 194 | |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 195 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 191 ~             0x3
[INFO] [stdout] 192 |                 // ("conditional, 3XNN: skips next instruction if Vx = NN");
[INFO] [stdout] 193 ~                 if self.registers[x_index] == nn => {
[INFO] [stdout] 194 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 195 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/chip8.rs:199:17
[INFO] [stdout]     |
[INFO] [stdout] 199 | /                 if self.registers[x_index] != nn {
[INFO] [stdout] 200 | |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 201 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 197 ~             0x4
[INFO] [stdout] 198 |                 // ("conditional, 4XNN: skips next instruction if Vx != NN");
[INFO] [stdout] 199 ~                 if self.registers[x_index] != nn => {
[INFO] [stdout] 200 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 201 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/chip8.rs:205:17
[INFO] [stdout]     |
[INFO] [stdout] 205 | /                 if self.registers[x_index] == self.registers[y_index] {
[INFO] [stdout] 206 | |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 207 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 203 ~             0x5
[INFO] [stdout] 204 |                 // ("conditional, 5XY0: skips next instruction if Vx == Vy");
[INFO] [stdout] 205 ~                 if self.registers[x_index] == self.registers[y_index] => {
[INFO] [stdout] 206 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 207 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/chip8.rs:293:17
[INFO] [stdout]     |
[INFO] [stdout] 293 | /                 if self.registers[x_index] != self.registers[y_index] {
[INFO] [stdout] 294 | |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 295 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 291 ~             0x9
[INFO] [stdout] 292 |                 // ("9XY0: skips the next instruction if Vx != Vy");
[INFO] [stdout] 293 ~                 if self.registers[x_index] != self.registers[y_index] => {
[INFO] [stdout] 294 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 295 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:194:21
[INFO] [stdout]     |
[INFO] [stdout] 194 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:200:21
[INFO] [stdout]     |
[INFO] [stdout] 200 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:206:21
[INFO] [stdout]     |
[INFO] [stdout] 206 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:224:21
[INFO] [stdout]     |
[INFO] [stdout] 224 |                     self.registers[x_index] = self.registers[x_index] | self.registers[y_index];
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] |= self.registers[y_index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:228:21
[INFO] [stdout]     |
[INFO] [stdout] 228 |                     self.registers[x_index] = self.registers[x_index] & self.registers[y_index];
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] &= self.registers[y_index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:232:21
[INFO] [stdout]     |
[INFO] [stdout] 232 |                     self.registers[x_index] = self.registers[x_index] ^ self.registers[y_index];
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] ^= self.registers[y_index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:266:21
[INFO] [stdout]     |
[INFO] [stdout] 266 |                     self.registers[x_index] = self.registers[x_index] >> 1;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] >>= 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     self.registers[x_index] = self.registers[x_index] << 1;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] <<= 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:294:21
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:352:25
[INFO] [stdout]     |
[INFO] [stdout] 352 |                         self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:359:25
[INFO] [stdout]     |
[INFO] [stdout] 359 |                         self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: statement with no effect
[INFO] [stdout]    --> src/chip8.rs:363:21
[INFO] [stdout]     |
[INFO] [stdout] 363 |                     ("invalid opcode");
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#no_effect
[INFO] [stdout]     = note: `#[warn(clippy::no_effect)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]    --> src/chip8.rs:382:21
[INFO] [stdout]     |
[INFO] [stdout] 382 | /                     if self.awaiting_keylift {
[INFO] [stdout] 383 | |                         if !keyboard.get_state()[keyboard.get_halt_key()] {
[INFO] [stdout] 384 | |                             self.awaiting_keylift = false;
[INFO] [stdout] 385 | |                             self.registers[x_index] = keyboard.get_halt_key() as u8;
[INFO] [stdout] 386 | |                         }
[INFO] [stdout] 387 | |                     }
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 382 ~                     if self.awaiting_keylift
[INFO] [stdout] 383 ~                         && !keyboard.get_state()[keyboard.get_halt_key()] {
[INFO] [stdout] 384 |                             self.awaiting_keylift = false;
[INFO] [stdout] 385 |                             self.registers[x_index] = keyboard.get_halt_key() as u8;
[INFO] [stdout] 386 ~                         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:392:25
[INFO] [stdout]     |
[INFO] [stdout] 392 |                         self.program_counter = self.program_counter - 2;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter -= 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:405:21
[INFO] [stdout]     |
[INFO] [stdout] 405 |                     self.index_register = self.index_register + self.registers[x_index] as u16;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.index_register += self.registers[x_index] as u16`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event_pump`
[INFO] [stdout]    --> src/chip8.rs:150:72
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn handle_next_instruction(&mut self, keyboard: &mut Keyboard, event_pump: &mut EventPump) {
[INFO] [stdout]     |                                                                        ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_event_pump`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:456:13
[INFO] [stdout]     |
[INFO] [stdout] 456 |             self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> src/keyboard.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         self.halt_key as usize
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.halt_key`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stream` is never read
[INFO] [stdout]  --> src/audio.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct AudioDriver {
[INFO] [stdout]   |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 6 |     stream: OutputStream,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_register_value` and `play_sound` are never used
[INFO] [stdout]    --> src/chip8.rs:118:12
[INFO] [stdout]     |
[INFO] [stdout]  26 | impl Chip8 {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn set_register_value(&mut self, register: u8, value: u8) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 132 |     pub fn play_sound(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: it looks like you're manually copying between slices
[INFO] [stdout]   --> src/chip8.rs:77:9
[INFO] [stdout]    |
[INFO] [stdout] 77 | /         for index in 0..rom_contents.len() {
[INFO] [stdout] 78 | |             self.memory[mem_start_location + index] = rom_contents[index];
[INFO] [stdout] 79 | |         }
[INFO] [stdout]    | |_________^ help: try replacing the loop by: `self.memory[mem_start_location..(rom_contents.len() + mem_start_location)].copy_from_slice(&rom_contents[..]);`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_memcpy
[INFO] [stdout]    = note: `#[warn(clippy::manual_memcpy)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/renderer.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 | /                 self.canvas.fill_rect(Rect::new(
[INFO] [stdout] 32 | |                     (pixel.x * chip8.vram_scale as u32) as i32,
[INFO] [stdout] 33 | |                     (pixel.y * chip8.vram_scale as u32) as i32,
[INFO] [stdout] 34 | |                     chip8.vram_scale as u32,
[INFO] [stdout] 35 | |                     chip8.vram_scale as u32,
[INFO] [stdout] 36 | |                 ));
[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] 31 |                 let _ = self.canvas.fill_rect(Rect::new(
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/chip8.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |         if height % DEFAULT_CHIP8_PIXEL_HEIGHT != 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `!height.is_multiple_of(DEFAULT_CHIP8_PIXEL_HEIGHT)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]    = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/chip8.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 |         if width % DEFAULT_CHIP8_PIXEL_WIDTH != 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `!width.is_multiple_of(DEFAULT_CHIP8_PIXEL_WIDTH)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |             self.sound_timer = self.sound_timer - 1;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.sound_timer -= 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]     = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |             self.delay_timer = self.delay_timer - 1;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.delay_timer -= 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/chip8.rs:422:24
[INFO] [stdout]     |
[INFO] [stdout] 422 |                     if !(index >= self.memory.len() - 2) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(index < self.memory.len() - 2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/chip8.rs:442:24
[INFO] [stdout]     |
[INFO] [stdout] 442 |                     if !(i >= self.memory.len() - 2) {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(i < self.memory.len() - 2)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/chip8.rs:193:17
[INFO] [stdout]     |
[INFO] [stdout] 193 | /                 if self.registers[x_index] == nn {
[INFO] [stdout] 194 | |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 195 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_match)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 191 ~             0x3
[INFO] [stdout] 192 |                 // ("conditional, 3XNN: skips next instruction if Vx = NN");
[INFO] [stdout] 193 ~                 if self.registers[x_index] == nn => {
[INFO] [stdout] 194 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 195 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/chip8.rs:199:17
[INFO] [stdout]     |
[INFO] [stdout] 199 | /                 if self.registers[x_index] != nn {
[INFO] [stdout] 200 | |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 201 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 197 ~             0x4
[INFO] [stdout] 198 |                 // ("conditional, 4XNN: skips next instruction if Vx != NN");
[INFO] [stdout] 199 ~                 if self.registers[x_index] != nn => {
[INFO] [stdout] 200 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 201 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/chip8.rs:205:17
[INFO] [stdout]     |
[INFO] [stdout] 205 | /                 if self.registers[x_index] == self.registers[y_index] {
[INFO] [stdout] 206 | |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 207 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 203 ~             0x5
[INFO] [stdout] 204 |                 // ("conditional, 5XY0: skips next instruction if Vx == Vy");
[INFO] [stdout] 205 ~                 if self.registers[x_index] == self.registers[y_index] => {
[INFO] [stdout] 206 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 207 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` can be collapsed into the outer `match`
[INFO] [stdout]    --> src/chip8.rs:293:17
[INFO] [stdout]     |
[INFO] [stdout] 293 | /                 if self.registers[x_index] != self.registers[y_index] {
[INFO] [stdout] 294 | |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 295 | |                 }
[INFO] [stdout]     | |_________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 291 ~             0x9
[INFO] [stdout] 292 |                 // ("9XY0: skips the next instruction if Vx != Vy");
[INFO] [stdout] 293 ~                 if self.registers[x_index] != self.registers[y_index] => {
[INFO] [stdout] 294 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout] 295 ~                 }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:194:21
[INFO] [stdout]     |
[INFO] [stdout] 194 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:200:21
[INFO] [stdout]     |
[INFO] [stdout] 200 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:206:21
[INFO] [stdout]     |
[INFO] [stdout] 206 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:224:21
[INFO] [stdout]     |
[INFO] [stdout] 224 |                     self.registers[x_index] = self.registers[x_index] | self.registers[y_index];
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] |= self.registers[y_index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:228:21
[INFO] [stdout]     |
[INFO] [stdout] 228 |                     self.registers[x_index] = self.registers[x_index] & self.registers[y_index];
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] &= self.registers[y_index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:232:21
[INFO] [stdout]     |
[INFO] [stdout] 232 |                     self.registers[x_index] = self.registers[x_index] ^ self.registers[y_index];
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] ^= self.registers[y_index]`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:266:21
[INFO] [stdout]     |
[INFO] [stdout] 266 |                     self.registers[x_index] = self.registers[x_index] >> 1;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] >>= 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |                     self.registers[x_index] = self.registers[x_index] << 1;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.registers[x_index] <<= 1`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:294:21
[INFO] [stdout]     |
[INFO] [stdout] 294 |                     self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:352:25
[INFO] [stdout]     |
[INFO] [stdout] 352 |                         self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:359:25
[INFO] [stdout]     |
[INFO] [stdout] 359 |                         self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: statement with no effect
[INFO] [stdout]    --> src/chip8.rs:363:21
[INFO] [stdout]     |
[INFO] [stdout] 363 |                     ("invalid opcode");
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#no_effect
[INFO] [stdout]     = note: `#[warn(clippy::no_effect)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` statement can be collapsed
[INFO] [stdout]    --> src/chip8.rs:382:21
[INFO] [stdout]     |
[INFO] [stdout] 382 | /                     if self.awaiting_keylift {
[INFO] [stdout] 383 | |                         if !keyboard.get_state()[keyboard.get_halt_key()] {
[INFO] [stdout] 384 | |                             self.awaiting_keylift = false;
[INFO] [stdout] 385 | |                             self.registers[x_index] = keyboard.get_halt_key() as u8;
[INFO] [stdout] 386 | |                         }
[INFO] [stdout] 387 | |                     }
[INFO] [stdout]     | |_____________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stdout]     = note: `#[warn(clippy::collapsible_if)]` on by default
[INFO] [stdout] help: collapse nested if block
[INFO] [stdout]     |
[INFO] [stdout] 382 ~                     if self.awaiting_keylift
[INFO] [stdout] 383 ~                         && !keyboard.get_state()[keyboard.get_halt_key()] {
[INFO] [stdout] 384 |                             self.awaiting_keylift = false;
[INFO] [stdout] 385 |                             self.registers[x_index] = keyboard.get_halt_key() as u8;
[INFO] [stdout] 386 ~                         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:392:25
[INFO] [stdout]     |
[INFO] [stdout] 392 |                         self.program_counter = self.program_counter - 2;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter -= 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:405:21
[INFO] [stdout]     |
[INFO] [stdout] 405 |                     self.index_register = self.index_register + self.registers[x_index] as u16;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.index_register += self.registers[x_index] as u16`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]    --> src/chip8.rs:456:13
[INFO] [stdout]     |
[INFO] [stdout] 456 |             self.program_counter = self.program_counter + 2;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.program_counter += 2`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting to the same type is unnecessary (`usize` -> `usize`)
[INFO] [stdout]   --> src/keyboard.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         self.halt_key as usize
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.halt_key`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
[INFO] [stdout]    = note: `#[warn(clippy::unnecessary_cast)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]   --> src/pixel.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         assert_eq!(true, pixel.on);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout]    = note: `#[warn(clippy::bool_assert_comparison)]` on by default
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]    |
[INFO] [stdout] 35 -         assert_eq!(true, pixel.on);
[INFO] [stdout] 35 +         assert!(pixel.on);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/renderer.rs:31:17
[INFO] [stdout]    |
[INFO] [stdout] 31 | /                 self.canvas.fill_rect(Rect::new(
[INFO] [stdout] 32 | |                     (pixel.x * chip8.vram_scale as u32) as i32,
[INFO] [stdout] 33 | |                     (pixel.y * chip8.vram_scale as u32) as i32,
[INFO] [stdout] 34 | |                     chip8.vram_scale as u32,
[INFO] [stdout] 35 | |                     chip8.vram_scale as u32,
[INFO] [stdout] 36 | |                 ));
[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] 31 |                 let _ = self.canvas.fill_rect(Rect::new(
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.82s
[INFO] running `Command { std: "docker" "inspect" "aa0f8bdd651da4602b16e39aaf56d1e19c5ac5a32784e5030ac9692335c774b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa0f8bdd651da4602b16e39aaf56d1e19c5ac5a32784e5030ac9692335c774b2", kill_on_drop: false }`
[INFO] [stdout] aa0f8bdd651da4602b16e39aaf56d1e19c5ac5a32784e5030ac9692335c774b2