Most linting

src/address.rs

@@ -8,8 +8,8 @@ impl From<u32> for Word {
     fn from(a: u32) -> Self { Self(a & 0xffffff) }
 }
 
-impl Into<u32> for Word {
+impl From<Word> for u32 {
-    fn into(self) -> u32 { self.0 }
+    fn from(word: Word) -> Self { word.0 }
 }
 
 impl std::ops::Add<i32> for Word {

src/cpu.rs

@@ -5,6 +5,7 @@ use crate::address::Word;
 use crate::memory::PeekPoke;
 use std::convert::TryFrom;
 
+#[allow(clippy::upper_case_acronyms)]
 struct CPU {
     memory: Memory, // Main memory, all of it
     pc: Word, // program counter, address of the low byte of the instruction
@@ -80,7 +81,7 @@ impl CPU {
                 let arg_length = instruction & 3;
                 if arg_length == 0 {
                     Ok(Instruction {
-                        opcode: opcode,
+                        opcode,
                         arg: None,
                         length: 1
                     })
@@ -88,11 +89,11 @@ impl CPU {
                     let mut arg = 0u32;
                     for n in 0..arg_length {
                         let mut b: u32 = self.memory.peek(self.pc + (n + 1) as i32) as u32;
-                        b = b << (8 * n);
+                        b <<= 8 * n;
                         arg += b;
                     }
                     Ok(Instruction {
-                        opcode: opcode,
+                        opcode,
                         arg: Some(arg),
                         length: arg_length + 1
                     })

src/main.rs

@@ -11,12 +11,9 @@ use winit::{
     dpi::LogicalSize
 };
 
-use pixels::{Error, Pixels, SurfaceTexture};
+use pixels::{Pixels, SurfaceTexture};
 use rand::RngCore;
-use rand::prelude::ThreadRng;
+use std::time::Instant;
-use std::time::{Instant, Duration};
-use pixels::wgpu::Instance;
-use std::convert::TryInto;
 
 fn main() {
     let event_loop = EventLoop::new();
@@ -50,7 +47,7 @@ fn main() {
                 let start = Instant::now();
                 draw(pixels.get_frame());
                 let draw_time = Instant::now() - start;
-                pixels.render();
+                pixels.render().expect("Problem displaying framebuffer");
                 let total_time = Instant::now() - start;
                 println!("Tick took {} total, {} to draw", total_time.as_micros(), draw_time.as_micros());
             }
@@ -63,7 +60,7 @@ fn draw(frame: &mut [u8]) {
     assert_eq!(frame.len(), 640 * 480 * 4);
     let mut rng = rand::thread_rng();
 
-    for (i, pixel) in frame.chunks_exact_mut(4).enumerate() {
+    for (_, pixel) in frame.chunks_exact_mut(4).enumerate() {
         let p = rng.next_u32();
         let [low, mid, high, _] = p.to_le_bytes();
         pixel[0] = low;

src/memory.rs

@@ -61,8 +61,8 @@ pub trait PeekPoke {
 }
 
 impl PeekPoke for Memory {
-    fn peek(&self, addr: Word) -> u8 { self[addr.into()] }
+    fn peek(&self, addr: Word) -> u8 { self[addr] }
-    fn poke(&mut self, addr: Word, val: u8) { self[addr.into()] = val; }
+    fn poke(&mut self, addr: Word, val: u8) { self[addr] = val; }
 }
 
 #[cfg(test)]