warning: item in documentation is missing backticks
  --> nes/nes_memory/src/lib.rs:57:47
   |
57 |     /// This should be called after every CPU tick(). If it returns true the CPU
   |                                               ^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#doc_markdown
   = note: requested on the command line with `-W clippy::doc-markdown`
help: try
   |
57 |     /// This should be called after every CPU `tick()`. If it returns true the CPU
   |                                               ~~~~~~~~

warning: fields `nes`, `cart_ram`, and `last_read` are never read
  --> nes/nes_memory/src/lib.rs:31:5
   |
30 | pub struct NESMemory {
   |            --------- fields in this struct
31 |     nes: NES,
   |     ^^^
32 |     cart_ram: bool,
   |     ^^^^^^^^
...
37 |     last_read: RefCell<u8>,
   |     ^^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: unused variable: `dest`
   --> nes/nes_memory/src/lib.rs:120:19
    |
120 |     fn ram(&self, dest: &mut [u8; memory::MAX_SIZE]) {
    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`
    |
    = note: `#[warn(unused_variables)]` on by default

warning: methods `ppu_read` and `ppu_write` are never used
  --> nes/ppu/src/lib.rs:91:8
   |
64 | impl PPU {
   | -------- methods in this implementation
...
91 |     fn ppu_read(&self, addr: u16) -> u8 {
   |        ^^^^^^^^
...
99 |     fn ppu_write(&mut self, addr: u16, val: u8) {
   |        ^^^^^^^^^

warning: fields `mapper` and `pallete_ram` are never read
  --> nes/ppu/src/lib.rs:9:5
   |
8  | pub struct PPU {
   |            --- fields in this struct
9  |     mapper: Box<dyn PPUMapper>,
   |     ^^^^^^
10 |     pallete_ram: [u8; 0x20],
   |     ^^^^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: unused variable: `dest`
  --> nes/ppu/src/lib.rs:59:19
   |
59 |     fn ram(&self, dest: &mut [u8; memory::MAX_SIZE]) {
   |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`

warning: unused variable: `val`
  --> nes/ppu/src/lib.rs:48:36
   |
48 |     fn write(&mut self, addr: u16, val: u8) {
   |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_val`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: field `ram` is never read
 --> nes/apu/src/lib.rs:9:5
  |
8 | pub struct APU {
  |            --- field in this struct
9 |     ram: [u8; 0x18],
  |     ^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: unused variable: `dest`
  --> nes/apu/src/lib.rs:42:19
   |
42 |     fn ram(&self, dest: &mut [u8; memory::MAX_SIZE]) {
   |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_dest`

warning: unused variable: `val`
  --> nes/apu/src/lib.rs:31:36
   |
31 |     fn write(&mut self, addr: u16, val: u8) {
   |                                    ^^^ help: if this is intentional, prefix it with an underscore: `_val`
   |
   = note: `#[warn(unused_variables)]` on by default