[INFO] updating cached repository https://github.com/stianeklund/NES
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/stianeklund/NES
[INFO] [stderr]  + c8f1a01...fd3f48c master     -> master  (forced update)
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fd3f48c2853d853a450dc5fedb814086a850406d
[INFO] checking stianeklund/NES against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstianeklund%2FNES" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stianeklund/NES on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/stianeklund/NES
[INFO] finished tweaking git repo https://github.com/stianeklund/NES
[INFO] tweaked toml for git repo https://github.com/stianeklund/NES written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/stianeklund/NES already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c27d879e6c72d9b76647a93322eb6c175a62043a63e62ee048e545abe7bdea33
[INFO] running `"docker" "start" "-a" "c27d879e6c72d9b76647a93322eb6c175a62043a63e62ee048e545abe7bdea33"`
[INFO] [stderr]    Compiling minifb v0.10.3
[INFO] [stderr]     Checking x11-dl v2.14.0
[INFO] [stderr]     Checking nes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `RangeTo`, `Range`
[INFO] [stderr]  --> src/rom.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::{Range, RangeTo};
[INFO] [stderr]   |                ^^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]  --> src/rom.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fmt;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/rom.rs:8:23
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{Result, Error};
[INFO] [stderr]   |                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `memory::Ram`
[INFO] [stderr]   --> src/rom.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use memory::Ram;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Interconnect`
[INFO] [stderr]   --> src/rom.rs:11:34
[INFO] [stderr]    |
[INFO] [stderr] 11 | use interconnect::{MemoryMapper, Interconnect};
[INFO] [stderr]    |                                  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert`
[INFO] [stderr]   --> src/rom.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::convert;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ppu::Ppu`
[INFO] [stderr]  --> src/interconnect.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ppu::Ppu;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExecutionContext`
[INFO] [stderr]  --> src/interconnect.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use cpu::{ExecutionContext, Registers};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `StatusRegister`
[INFO] [stderr]  --> src/opcode.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 | use cpu::{StatusRegister};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `UpperHex`
[INFO] [stderr]  --> src/memory.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::{UpperHex, LowerHex};
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/memory.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/memory.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/memory.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Cartridge`, `RomHeader`
[INFO] [stderr]  --> src/memory.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rom::{Cartridge, RomHeader};
[INFO] [stderr]   |           ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `FrameBuffer`
[INFO] [stderr]  --> src/cpu.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 | use ppu::{Ppu, FrameBuffer};
[INFO] [stderr]   |                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Interconnect`
[INFO] [stderr]  --> src/ppu.rs:1:34
[INFO] [stderr]   |
[INFO] [stderr] 1 | use interconnect::{MemoryMapper, Interconnect};
[INFO] [stderr]   |                                  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Scale`
[INFO] [stderr]  --> src/ppu.rs:2:14
[INFO] [stderr]   |
[INFO] [stderr] 2 | use minifb::{Scale, WindowOptions, Window};
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]   --> src/main.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::{self, Read};
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Interconnect`
[INFO] [stderr]   --> src/main.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 | use interconnect::{Interconnect, MemoryMapper};
[INFO] [stderr]    |                    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rom.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |         let mut prg_lenght;
[INFO] [stderr]     |             ----^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ppu.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let mut window = Window::new(
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `RangeTo`, `Range`
[INFO] [stderr]  --> src/rom.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::{Range, RangeTo};
[INFO] [stderr]   |                ^^^^^  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt`
[INFO] [stderr]  --> src/rom.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::fmt;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/rom.rs:8:23
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{Result, Error};
[INFO] [stderr]   |                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `memory::Ram`
[INFO] [stderr]   --> src/rom.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use memory::Ram;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Interconnect`
[INFO] [stderr]   --> src/rom.rs:11:34
[INFO] [stderr]    |
[INFO] [stderr] 11 | use interconnect::{MemoryMapper, Interconnect};
[INFO] [stderr]    |                                  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert`
[INFO] [stderr]   --> src/rom.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::convert;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ppu::Ppu`
[INFO] [stderr]  --> src/interconnect.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ppu::Ppu;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ExecutionContext`
[INFO] [stderr]  --> src/interconnect.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use cpu::{ExecutionContext, Registers};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `StatusRegister`
[INFO] [stderr]  --> src/opcode.rs:2:11
[INFO] [stderr]   |
[INFO] [stderr] 2 | use cpu::{StatusRegister};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `UpperHex`
[INFO] [stderr]  --> src/memory.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::{UpperHex, LowerHex};
[INFO] [stderr]   |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/memory.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/memory.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/memory.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Cartridge`, `RomHeader`
[INFO] [stderr]  --> src/memory.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rom::{Cartridge, RomHeader};
[INFO] [stderr]   |           ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `FrameBuffer`
[INFO] [stderr]  --> src/cpu.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 | use ppu::{Ppu, FrameBuffer};
[INFO] [stderr]   |                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Interconnect`
[INFO] [stderr]  --> src/ppu.rs:1:34
[INFO] [stderr]   |
[INFO] [stderr] 1 | use interconnect::{MemoryMapper, Interconnect};
[INFO] [stderr]   |                                  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Scale`
[INFO] [stderr]  --> src/ppu.rs:2:14
[INFO] [stderr]   |
[INFO] [stderr] 2 | use minifb::{Scale, WindowOptions, Window};
[INFO] [stderr]   |              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mask_addr`
[INFO] [stderr]    --> src/rom.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     fn mask_addr(&self, addr: u16) -> u16 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `retrieve_mapper_id`
[INFO] [stderr]    --> src/rom.rs:130:5
[INFO] [stderr]     |
[INFO] [stderr] 130 |     pub fn retrieve_mapper_id(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_rom`
[INFO] [stderr]    --> src/rom.rs:134:5
[INFO] [stderr]     |
[INFO] [stderr] 134 |     pub fn read_rom(&mut self, file: &str) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `byte`
[INFO] [stderr]   --> src/interconnect.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     byte: u8,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `address`
[INFO] [stderr]   --> src/interconnect.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     address: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `lookup`
[INFO] [stderr]   --> src/interconnect.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     lookup: String
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Interconnect`
[INFO] [stderr]   --> src/interconnect.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub struct Interconnect {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `default`
[INFO] [stderr]   --> src/interconnect.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn default() -> Box<Interconnect> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A`
[INFO] [stderr]   --> src/opcode.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     A,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `X`
[INFO] [stderr]   --> src/opcode.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     X,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Y`
[INFO] [stderr]   --> src/opcode.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Y,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `default`
[INFO] [stderr]   --> src/opcode.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn default() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `default`
[INFO] [stderr]   --> src/cpu.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn default() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cli`
[INFO] [stderr]    --> src/cpu.rs:553:5
[INFO] [stderr]     |
[INFO] [stderr] 553 |     fn cli(&mut self) { self.cpu.flags.interrupt = false; }
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sloa`
[INFO] [stderr]    --> src/cpu.rs:740:5
[INFO] [stderr]     |
[INFO] [stderr] 740 |     fn sloa(&mut self, value: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `FrameBuffer`
[INFO] [stderr]   --> src/ppu.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub struct FrameBuffer {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `new`
[INFO] [stderr]   --> src/ppu.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn new() -> FrameBuffer {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PpuDataBus`
[INFO] [stderr]    --> src/ppu.rs:108:1
[INFO] [stderr]     |
[INFO] [stderr] 108 | pub struct PpuDataBus {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]   --> src/main.rs:12:21
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::{self, Read};
[INFO] [stderr]    |                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Interconnect`
[INFO] [stderr]   --> src/main.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 | use interconnect::{Interconnect, MemoryMapper};
[INFO] [stderr]    |                    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ppu.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 | /         writeln!(f, "{}\t{}\t{}\t{}\t{}\t{}{}",
[INFO] [stderr] 137 | |                  "CTRL","MASK","OAM","DATA","SCROLL","ADDR\t", "DMA\t");
[INFO] [stderr]     | |________________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rom.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |         let mut prg_lenght;
[INFO] [stderr]     |             ----^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ppu.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let mut window = Window::new(
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mask_addr`
[INFO] [stderr]    --> src/rom.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     fn mask_addr(&self, addr: u16) -> u16 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `retrieve_mapper_id`
[INFO] [stderr]    --> src/rom.rs:130:5
[INFO] [stderr]     |
[INFO] [stderr] 130 |     pub fn retrieve_mapper_id(&self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_rom`
[INFO] [stderr]    --> src/rom.rs:134:5
[INFO] [stderr]     |
[INFO] [stderr] 134 |     pub fn read_rom(&mut self, file: &str) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `byte`
[INFO] [stderr]   --> src/interconnect.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     byte: u8,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `address`
[INFO] [stderr]   --> src/interconnect.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     address: u16,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `lookup`
[INFO] [stderr]   --> src/interconnect.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     lookup: String
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Interconnect`
[INFO] [stderr]   --> src/interconnect.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub struct Interconnect {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `default`
[INFO] [stderr]   --> src/interconnect.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn default() -> Box<Interconnect> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A`
[INFO] [stderr]   --> src/opcode.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     A,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `X`
[INFO] [stderr]   --> src/opcode.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     X,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Y`
[INFO] [stderr]   --> src/opcode.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Y,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `default`
[INFO] [stderr]   --> src/opcode.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn default() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `default`
[INFO] [stderr]   --> src/cpu.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn default() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cli`
[INFO] [stderr]    --> src/cpu.rs:553:5
[INFO] [stderr]     |
[INFO] [stderr] 553 |     fn cli(&mut self) { self.cpu.flags.interrupt = false; }
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sloa`
[INFO] [stderr]    --> src/cpu.rs:740:5
[INFO] [stderr]     |
[INFO] [stderr] 740 |     fn sloa(&mut self, value: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `FrameBuffer`
[INFO] [stderr]   --> src/ppu.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub struct FrameBuffer {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `new`
[INFO] [stderr]   --> src/ppu.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn new() -> FrameBuffer {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PpuDataBus`
[INFO] [stderr]    --> src/ppu.rs:108:1
[INFO] [stderr]     |
[INFO] [stderr] 108 | pub struct PpuDataBus {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ppu.rs:136:9
[INFO] [stderr]     |
[INFO] [stderr] 136 | /         writeln!(f, "{}\t{}\t{}\t{}\t{}\t{}{}",
[INFO] [stderr] 137 | |                  "CTRL","MASK","OAM","DATA","SCROLL","ADDR\t", "DMA\t");
[INFO] [stderr]     | |________________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.82s
[INFO] running `"docker" "inspect" "c27d879e6c72d9b76647a93322eb6c175a62043a63e62ee048e545abe7bdea33"`
[INFO] running `"docker" "rm" "-f" "c27d879e6c72d9b76647a93322eb6c175a62043a63e62ee048e545abe7bdea33"`
[INFO] [stdout] c27d879e6c72d9b76647a93322eb6c175a62043a63e62ee048e545abe7bdea33