[INFO] cloning repository https://github.com/anujgtm1/Chip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anujgtm1/Chip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanujgtm1%2FChip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanujgtm1%2FChip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2c400376120f4acce13b93c139db58588121c48
[INFO] checking anujgtm1/Chip8 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%2Fanujgtm1%2FChip8" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/anujgtm1/Chip8
[INFO] finished tweaking git repo https://github.com/anujgtm1/Chip8
[INFO] tweaked toml for git repo https://github.com/anujgtm1/Chip8 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/anujgtm1/Chip8 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/anujgtm1/Chip8 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f359233a09de03af4112e29c6f9424b3d2bee48783e61e55f054600f5ff57d7b
[INFO] running `Command { std: "docker" "start" "-a" "f359233a09de03af4112e29c6f9424b3d2bee48783e61e55f054600f5ff57d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f359233a09de03af4112e29c6f9424b3d2bee48783e61e55f054600f5ff57d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f359233a09de03af4112e29c6f9424b3d2bee48783e61e55f054600f5ff57d7b", kill_on_drop: false }`
[INFO] [stdout] f359233a09de03af4112e29c6f9424b3d2bee48783e61e55f054600f5ff57d7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8f27e4a5b2065f35aff88c8cfb3d4d4fc298a955720a41b26d462e584eea1936
[INFO] running `Command { std: "docker" "start" "-a" "8f27e4a5b2065f35aff88c8cfb3d4d4fc298a955720a41b26d462e584eea1936", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking arc-swap v0.4.6
[INFO] [stderr]    Compiling sdl2 v0.34.0
[INFO] [stderr]    Compiling sdl2-sys v0.34.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking signal-hook-registry v1.2.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking signal-hook v0.1.15
[INFO] [stderr]     Checking crossterm v0.17.4
[INFO] [stderr]     Checking tui v0.9.4
[INFO] [stderr]     Checking chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Error`
[INFO] [stdout]  --> src/cpu.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Error;
[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 imports: `EnterAlternateScreen`, `Event as CEvent`, `KeyCode`, `LeaveAlternateScreen`, `disable_raw_mode`, `enable_raw_mode`, `execute`, and `self`
[INFO] [stdout]  --> src/debug.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     event::{self, Event as CEvent, KeyCode},
[INFO] [stdout]   |             ^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 6 |     execute,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 7 |     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Widget`
[INFO] [stdout]   --> src/debug.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tui::widgets::{Widget, Block, Borders};
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Constraint`, `Direction`, and `Layout`
[INFO] [stdout]   --> src/debug.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | use tui::layout::{Layout, Constraint, Direction};
[INFO] [stdout]    |                   ^^^^^^  ^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Error`
[INFO] [stdout]  --> src/cpu.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::Error;
[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 imports: `EnterAlternateScreen`, `Event as CEvent`, `KeyCode`, `LeaveAlternateScreen`, `disable_raw_mode`, `enable_raw_mode`, `execute`, and `self`
[INFO] [stdout]  --> src/debug.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     event::{self, Event as CEvent, KeyCode},
[INFO] [stdout]   |             ^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 6 |     execute,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 7 |     terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Widget`
[INFO] [stdout]   --> src/debug.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tui::widgets::{Widget, Block, Borders};
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Constraint`, `Direction`, and `Layout`
[INFO] [stdout]   --> src/debug.rs:12:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | use tui::layout::{Layout, Constraint, Direction};
[INFO] [stdout]    |                   ^^^^^^  ^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chip8` (bin "chip8") due to 1 previous error; 40 warnings emitted
[INFO] [stdout] warning: static `FONT_START` is never used
[INFO] [stdout]  --> src/memory.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | static FONT_START: u16 = 0;
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: static `FONT_SIZE` is never used
[INFO] [stdout]  --> src/memory.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | static FONT_SIZE: u8 = 5;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Memory` is never constructed
[INFO] [stdout]  --> src/memory.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Memory {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/memory.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Memory {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 13 |
[INFO] [stdout] 14 |     pub fn new() -> Memory {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn mock() -> Memory {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn read(&self, address: &u16) -> u8 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn write(&mut self, address: &u16, data: &u8) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn load_fonts(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn load_data(&mut self, start_address: &u16, data: &Vec<u8>) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn get_font_address(&self, font: &u8) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn read_instruction(&self, address: &u16) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static `FONT_SET` is never used
[INFO] [stdout]   --> src/memory.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | static FONT_SET: [u8; 80] = [
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `REGISTER_SIZE` is never used
[INFO] [stdout]  --> src/cpu.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | const REGISTER_SIZE: usize = 8;
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STACK_SIZE` is never used
[INFO] [stdout]  --> src/cpu.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const STACK_SIZE: usize = 16;
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CPU` is never constructed
[INFO] [stdout]  --> src/cpu.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct CPU {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]   --> src/cpu.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl CPU {
[INFO] [stdout]    | -------- associated items in this implementation
[INFO] [stdout] 22 |     pub fn new(bus: Bus) -> CPU {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn mock() -> CPU {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn fetch_opcode(&mut self) -> u16 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn decode(&self, opcode: u16) -> Instruction {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn inc_pc(&mut self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     pub fn set_pc(&mut self, pc: &u16) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn get_register(&self, register: u8) -> u8 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn set_register(&mut self, register: u8, value: u8) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 65 |     pub fn execute_opcode(&mut self, ins: Instruction) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bus` is never constructed
[INFO] [stdout]  --> src/bus.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Bus {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `mock` and `new` are never used
[INFO] [stdout]   --> src/bus.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Bus {
[INFO] [stdout]    | -------- associated functions in this implementation
[INFO] [stdout] 17 |
[INFO] [stdout] 18 |     pub fn mock() -> Bus {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn new() -> Bus {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `crossterm_terminal` is never used
[INFO] [stdout]   --> src/debug.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn crossterm_terminal() -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Graphics` is never constructed
[INFO] [stdout]  --> src/graphics.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Graphics {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `mock` are never used
[INFO] [stdout]   --> src/graphics.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Graphics {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Graphics {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn mock() -> Graphics {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sdl_demo` is never used
[INFO] [stdout]   --> src/graphics.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn sdl_demo() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Input` is never constructed
[INFO] [stdout]  --> src/input.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Input {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `mock` are never used
[INFO] [stdout]   --> src/input.rs:6:12
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl Input {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout]  6 |     pub fn new() -> Input {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub fn mock() -> Input {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sound` is never constructed
[INFO] [stdout]  --> src/sound.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Sound {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `mock` and `new` are never used
[INFO] [stdout]   --> src/sound.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl Sound {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout]  6 |
[INFO] [stdout]  7 |     pub fn mock() -> Sound {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub fn new() -> Sound {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Address` is never used
[INFO] [stdout]  --> src/instructions.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Address = u16;
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `HalfWord` is never used
[INFO] [stdout]  --> src/instructions.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | type HalfWord = u8;
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Instruction` is never used
[INFO] [stdout]  --> src/instructions.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum Instruction {
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_first_nibble` is never used
[INFO] [stdout]   --> src/instructions.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn get_first_nibble(value: &u16) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_second_nibble` is never used
[INFO] [stdout]   --> src/instructions.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn get_second_nibble(value: &u16) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_third_nibble` is never used
[INFO] [stdout]   --> src/instructions.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn get_third_nibble(value: &u16) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_last_nibble` is never used
[INFO] [stdout]   --> src/instructions.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn get_last_nibble(value: &u16) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_last_byte` is never used
[INFO] [stdout]   --> src/instructions.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn get_last_byte(value: &u16) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_first_byte` is never used
[INFO] [stdout]   --> src/instructions.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn get_first_byte(value: &u16) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_last_3_nibbles` is never used
[INFO] [stdout]   --> src/instructions.rs:69:4
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn get_last_3_nibbles(value: &u16) -> u16 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `fetch_opcode` is never used
[INFO] [stdout]   --> src/instructions.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 74 | impl Instruction {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 75 |     pub fn fetch_opcode(word: &u16) -> Instruction {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/memory.rs:37:28
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut i: usize = FONT_START.try_into().unwrap();
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `I` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub I : u16,                        // Special register used to store addresses
[INFO] [stdout]    |         ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `VF` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub VF: u8,                        // Flag Register
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `vf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `PC` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub PC: u16,                        // Program Counter
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `pc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `SP` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub SP: usize,                         // Stack Pointer
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `sp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `DT` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub DT: u8,                         // Delay Timer (Automatically decremented at a rate of 60Hz if set)
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `dt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `ST` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub ST: u8,                         // Sound Timer (Automatically decremented at a rate of 60Hz if set) Buzzer will soudn if ST > 0
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `st`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `DT` and `ST` are never read
[INFO] [stdout]   --> src/cpu.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | struct CPU {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub DT: u8,                         // Delay Timer (Automatically decremented at a rate of 60Hz if set)
[INFO] [stdout]    |         ^^
[INFO] [stdout] 17 |     pub ST: u8,                         // Sound Timer (Automatically decremented at a rate of 60Hz if set) Buzzer will soudn if ST > 0
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `input`, `graphics`, and `sound` are never read
[INFO] [stdout]   --> src/bus.rs:9:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct Bus {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout]  9 |     pub input: Input,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 10 |
[INFO] [stdout] 11 |     pub graphics: Graphics,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     pub sound: Sound,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/bus.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Bus {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn new() -> Bus {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `crossterm_terminal` is never used
[INFO] [stdout]   --> src/debug.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn crossterm_terminal() -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/graphics.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Graphics {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Graphics {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sdl_demo` is never used
[INFO] [stdout]   --> src/graphics.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn sdl_demo() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/input.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Input {
[INFO] [stdout]   | ---------- associated function in this implementation
[INFO] [stdout] 6 |     pub fn new() -> Input {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/sound.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl Sound {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 11 |     pub fn new() -> Sound {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Address` is never used
[INFO] [stdout]  --> src/instructions.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | type Address = u16;
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `HalfWord` is never used
[INFO] [stdout]  --> src/instructions.rs:2:6
[INFO] [stdout]   |
[INFO] [stdout] 2 | type HalfWord = u8;
[INFO] [stdout]   |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_first_byte` is never used
[INFO] [stdout]   --> src/instructions.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn get_first_byte(value: &u16) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/memory.rs:37:28
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut i: usize = FONT_START.try_into().unwrap();
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `I` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub I : u16,                        // Special register used to store addresses
[INFO] [stdout]    |         ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `VF` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub VF: u8,                        // Flag Register
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case (notice the capitalization): `vf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `PC` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub PC: u16,                        // Program Counter
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `pc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `SP` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub SP: usize,                         // Stack Pointer
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `sp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `DT` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub DT: u8,                         // Delay Timer (Automatically decremented at a rate of 60Hz if set)
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `dt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `ST` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub ST: u8,                         // Sound Timer (Automatically decremented at a rate of 60Hz if set) Buzzer will soudn if ST > 0
[INFO] [stdout]    |         ^^ help: convert the identifier to snake case: `st`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chip8` (bin "chip8" test) due to 1 previous error; 21 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8f27e4a5b2065f35aff88c8cfb3d4d4fc298a955720a41b26d462e584eea1936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f27e4a5b2065f35aff88c8cfb3d4d4fc298a955720a41b26d462e584eea1936", kill_on_drop: false }`
[INFO] [stdout] 8f27e4a5b2065f35aff88c8cfb3d4d4fc298a955720a41b26d462e584eea1936