[INFO] cloning repository https://github.com/TheHackerCoding/chip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TheHackerCoding/chip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheHackerCoding%2Fchip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheHackerCoding%2Fchip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7fcbfe05adc98c15a160729dd385d32c8508ad0
[INFO] building TheHackerCoding/chip8 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheHackerCoding%2Fchip8" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TheHackerCoding/chip8 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TheHackerCoding/chip8
[INFO] finished tweaking git repo https://github.com/TheHackerCoding/chip8
[INFO] tweaked toml for git repo https://github.com/TheHackerCoding/chip8 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/TheHackerCoding/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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c015183b33d93b05ae5eef163d0fd41d8546ae5364ab67c538f4d9395cd0a44d
[INFO] running `Command { std: "docker" "start" "-a" "c015183b33d93b05ae5eef163d0fd41d8546ae5364ab67c538f4d9395cd0a44d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c015183b33d93b05ae5eef163d0fd41d8546ae5364ab67c538f4d9395cd0a44d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c015183b33d93b05ae5eef163d0fd41d8546ae5364ab67c538f4d9395cd0a44d", kill_on_drop: false }`
[INFO] [stdout] c015183b33d93b05ae5eef163d0fd41d8546ae5364ab67c538f4d9395cd0a44d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99d13b4d719b29336e6360196c89c9f2aabcf8861bd9e3b1199f14d949f02254
[INFO] running `Command { std: "docker" "start" "-a" "99d13b4d719b29336e6360196c89c9f2aabcf8861bd9e3b1199f14d949f02254", kill_on_drop: false }`
[INFO] [stderr]    Compiling cmake v0.1.48
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling raylib-sys v3.7.0
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling raylib v3.7.0
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/chip8.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{error::Error, fs, process::exit};
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/chip8.rs:192:24
[INFO] [stdout]     |
[INFO] [stdout] 192 |                     if (V[((opcode & 0x00F0) >> 4) as usize]
[INFO] [stdout]     |                        ^
[INFO] [stdout] 193 |                         > (0xFF - V[((opcode & 0x0F00) >> 8) as usize]))
[INFO] [stdout]     |                                                                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 192 ~                     if V[((opcode & 0x00F0) >> 4) as usize]
[INFO] [stdout] 193 ~                         > (0xFF - V[((opcode & 0x0F00) >> 8) as usize])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/chip8.rs:426:20
[INFO] [stdout]     |
[INFO] [stdout] 426 |                 if (self.gfx[(y * 64) + x] == 0) {
[INFO] [stdout]     |                    ^                           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 426 -                 if (self.gfx[(y * 64) + x] == 0) {
[INFO] [stdout] 426 +                 if self.gfx[(y * 64) + x] == 0 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:251:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 251 |             0xA000 => {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:257:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 257 |             0xB000 => {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:262:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 262 |             0xC000 => {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:268:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 268 |             0xD000 => {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:300:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 300 |             0xE000 => match opcode & 0x00FF {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 322 |             0xF000 => match opcode & 0x00FF {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:408:13
[INFO] [stdout]     |
[INFO] [stdout] 408 |             _ => println!("Unknown opcode: 0x{}", opcode),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/chip8.rs:408:13
[INFO] [stdout]     |
[INFO] [stdout] 99  |             0x0000 => match opcode & 0x000F {
[INFO] [stdout]     |             ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 117 |             0x1000 => pc = opcode & 0x0FFF,
[INFO] [stdout]     |             ------ matches some of the same values
[INFO] [stdout] 118 |
[INFO] [stdout] 119 |             0x2000 => {
[INFO] [stdout]     |             ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 126 |             0x3000 => {
[INFO] [stdout]     |             ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 408 |             _ => println!("Unknown opcode: 0x{}", opcode),
[INFO] [stdout]     |             ^ ...and 6 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `opcode` is never read
[INFO] [stdout]   --> src/chip8.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut opcode = self.opcode;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `drawFlag` is assigned to, but never used
[INFO] [stdout]   --> src/chip8.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut drawFlag = self.drawFlag;
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_drawFlag` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gfx` is never read
[INFO] [stdout]    --> src/chip8.rs:102:21
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     gfx = &mut smallvec![0; 2048];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `drawFlag` is never read
[INFO] [stdout]    --> src/chip8.rs:103:21
[INFO] [stdout]     |
[INFO] [stdout] 103 |                     drawFlag = true;
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:111:21
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:117:23
[INFO] [stdout]     |
[INFO] [stdout] 117 |             0x1000 => pc = opcode & 0x0FFF,
[INFO] [stdout]     |                       ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sp` is never read
[INFO] [stdout]    --> src/chip8.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 sp += 1;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:123:17
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 pc = opcode & 0x0FFF;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     pc += 4;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:131:21
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:138:21
[INFO] [stdout]     |
[INFO] [stdout] 138 |                     pc += 4;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:140:21
[INFO] [stdout]     |
[INFO] [stdout] 140 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     pc += 4;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:149:21
[INFO] [stdout]     |
[INFO] [stdout] 149 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:156:17
[INFO] [stdout]     |
[INFO] [stdout] 156 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:169:21
[INFO] [stdout]     |
[INFO] [stdout] 169 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:175:21
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:181:21
[INFO] [stdout]     |
[INFO] [stdout] 181 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:200:21
[INFO] [stdout]     |
[INFO] [stdout] 200 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:216:21
[INFO] [stdout]     |
[INFO] [stdout] 216 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:229:21
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:236:21
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Ox9000`
[INFO] [stdout]    --> src/chip8.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ox9000`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:245:21
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     pc += 4;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:247:21
[INFO] [stdout]     |
[INFO] [stdout] 247 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:253:17
[INFO] [stdout]     |
[INFO] [stdout] 253 |                 I = (opcode & 0x0FFF) as u8;
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:259:17
[INFO] [stdout]     |
[INFO] [stdout] 259 |                 pc = (opcode & 0x0FFF) + V[0] as u16;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:265:17
[INFO] [stdout]     |
[INFO] [stdout] 265 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `drawFlag` is never read
[INFO] [stdout]    --> src/chip8.rs:296:17
[INFO] [stdout]     |
[INFO] [stdout] 296 |                 drawFlag = true;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:297:17
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:304:25
[INFO] [stdout]     |
[INFO] [stdout] 304 |                         pc += 4;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:306:25
[INFO] [stdout]     |
[INFO] [stdout] 306 |                         pc += 2;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:313:25
[INFO] [stdout]     |
[INFO] [stdout] 313 |                         pc += 4;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:315:25
[INFO] [stdout]     |
[INFO] [stdout] 315 |                         pc += 2;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:326:21
[INFO] [stdout]     |
[INFO] [stdout] 326 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:341:21
[INFO] [stdout]     |
[INFO] [stdout] 341 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:347:21
[INFO] [stdout]     |
[INFO] [stdout] 347 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:353:21
[INFO] [stdout]     |
[INFO] [stdout] 353 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:364:21
[INFO] [stdout]     |
[INFO] [stdout] 364 |                     I += V[((opcode & 0x0F00) >> 8) as usize];
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:365:21
[INFO] [stdout]     |
[INFO] [stdout] 365 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:370:21
[INFO] [stdout]     |
[INFO] [stdout] 370 |                     I = V[((opcode & 0x0F00) >> 8) as usize] * 0x5;
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:371:21
[INFO] [stdout]     |
[INFO] [stdout] 371 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:379:21
[INFO] [stdout]     |
[INFO] [stdout] 379 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:390:21
[INFO] [stdout]     |
[INFO] [stdout] 390 |                     I += ((opcode & 0x0F00) >> 8) as u8 + 1;
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:391:21
[INFO] [stdout]     |
[INFO] [stdout] 391 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:402:21
[INFO] [stdout]     |
[INFO] [stdout] 402 |                     I += ((opcode & 0x0F00) >> 8) as u8 + 1;
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:403:21
[INFO] [stdout]     |
[INFO] [stdout] 403 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `delay_timer` is never read
[INFO] [stdout]    --> src/chip8.rs:412:13
[INFO] [stdout]     |
[INFO] [stdout] 412 |             delay_timer -= 1;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sound_timer` is never read
[INFO] [stdout]    --> src/chip8.rs:419:13
[INFO] [stdout]     |
[INFO] [stdout] 419 |             sound_timer -= 1;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut memory = &mut self.memory;
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut stack = &mut self.stack;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut V = &mut self.V;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut key = &self.key;
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chip8.rs:275:21
[INFO] [stdout]     |
[INFO] [stdout] 275 |                 let mut x = V[((opcode & 0x0F00) >> 8) as usize];
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chip8.rs:276:21
[INFO] [stdout]     |
[INFO] [stdout] 276 |                 let mut y = V[((opcode & 0x00F0) >> 4) as usize];
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chip8.rs:277:21
[INFO] [stdout]     |
[INFO] [stdout] 277 |                 let mut height = opcode & 0x000F;
[INFO] [stdout]     |                     ----^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `debug_render` is never used
[INFO] [stdout]    --> src/chip8.rs:423:12
[INFO] [stdout]     |
[INFO] [stdout] 46  | impl Chip8 {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 423 |     pub fn debug_render(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `V` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     V: SmallVec<[u8; 16]>,
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `I` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     I: u8,
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `drawFlag` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub drawFlag: bool,
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `draw_flag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `drawFlag` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut drawFlag = self.drawFlag;
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `draw_flag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `V` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:77:17
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut V = &mut self.V;
[INFO] [stdout]    |                 ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `I` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:78:17
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let mut I = self.I;
[INFO] [stdout]    |                 ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ox9000` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ox9000`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `keyPress` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:331:29
[INFO] [stdout]     |
[INFO] [stdout] 331 |                     let mut keyPress: bool = false;
[INFO] [stdout]     |                             ^^^^^^^^ help: convert the identifier to snake case: `key_press`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.66s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "99d13b4d719b29336e6360196c89c9f2aabcf8861bd9e3b1199f14d949f02254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99d13b4d719b29336e6360196c89c9f2aabcf8861bd9e3b1199f14d949f02254", kill_on_drop: false }`
[INFO] [stdout] 99d13b4d719b29336e6360196c89c9f2aabcf8861bd9e3b1199f14d949f02254
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1eca42c34d294302b7016c9e1a1dfd2e0cdf3d422005c4b19686e09368c8bb83
[INFO] running `Command { std: "docker" "start" "-a" "1eca42c34d294302b7016c9e1a1dfd2e0cdf3d422005c4b19686e09368c8bb83", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/chip8.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{error::Error, fs, process::exit};
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/chip8.rs:192:24
[INFO] [stdout]     |
[INFO] [stdout] 192 |                     if (V[((opcode & 0x00F0) >> 4) as usize]
[INFO] [stdout]     |                        ^
[INFO] [stdout] 193 |                         > (0xFF - V[((opcode & 0x0F00) >> 8) as usize]))
[INFO] [stdout]     |                                                                        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 192 ~                     if V[((opcode & 0x00F0) >> 4) as usize]
[INFO] [stdout] 193 ~                         > (0xFF - V[((opcode & 0x0F00) >> 8) as usize])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/chip8.rs:426:20
[INFO] [stdout]     |
[INFO] [stdout] 426 |                 if (self.gfx[(y * 64) + x] == 0) {
[INFO] [stdout]     |                    ^                           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 426 -                 if (self.gfx[(y * 64) + x] == 0) {
[INFO] [stdout] 426 +                 if self.gfx[(y * 64) + x] == 0 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:251:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 251 |             0xA000 => {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:257:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 257 |             0xB000 => {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:262:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 262 |             0xC000 => {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:268:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 268 |             0xD000 => {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:300:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 300 |             0xE000 => match opcode & 0x00FF {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:322:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ------ matches any value
[INFO] [stdout] ...
[INFO] [stdout] 322 |             0xF000 => match opcode & 0x00FF {
[INFO] [stdout]     |             ^^^^^^ no value can reach this
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/chip8.rs:408:13
[INFO] [stdout]     |
[INFO] [stdout] 408 |             _ => println!("Unknown opcode: 0x{}", opcode),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/chip8.rs:408:13
[INFO] [stdout]     |
[INFO] [stdout] 99  |             0x0000 => match opcode & 0x000F {
[INFO] [stdout]     |             ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 117 |             0x1000 => pc = opcode & 0x0FFF,
[INFO] [stdout]     |             ------ matches some of the same values
[INFO] [stdout] 118 |
[INFO] [stdout] 119 |             0x2000 => {
[INFO] [stdout]     |             ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 126 |             0x3000 => {
[INFO] [stdout]     |             ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 408 |             _ => println!("Unknown opcode: 0x{}", opcode),
[INFO] [stdout]     |             ^ ...and 6 other patterns collectively make this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `opcode` is never read
[INFO] [stdout]   --> src/chip8.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let mut opcode = self.opcode;
[INFO] [stdout]    |                 ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `drawFlag` is assigned to, but never used
[INFO] [stdout]   --> src/chip8.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut drawFlag = self.drawFlag;
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_drawFlag` instead
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `gfx` is never read
[INFO] [stdout]    --> src/chip8.rs:102:21
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     gfx = &mut smallvec![0; 2048];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `drawFlag` is never read
[INFO] [stdout]    --> src/chip8.rs:103:21
[INFO] [stdout]     |
[INFO] [stdout] 103 |                     drawFlag = true;
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:104:21
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:111:21
[INFO] [stdout]     |
[INFO] [stdout] 111 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:117:23
[INFO] [stdout]     |
[INFO] [stdout] 117 |             0x1000 => pc = opcode & 0x0FFF,
[INFO] [stdout]     |                       ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sp` is never read
[INFO] [stdout]    --> src/chip8.rs:122:17
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 sp += 1;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:123:17
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 pc = opcode & 0x0FFF;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:129:21
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     pc += 4;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:131:21
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:138:21
[INFO] [stdout]     |
[INFO] [stdout] 138 |                     pc += 4;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:140:21
[INFO] [stdout]     |
[INFO] [stdout] 140 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |                     pc += 4;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:149:21
[INFO] [stdout]     |
[INFO] [stdout] 149 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:156:17
[INFO] [stdout]     |
[INFO] [stdout] 156 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:169:21
[INFO] [stdout]     |
[INFO] [stdout] 169 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:175:21
[INFO] [stdout]     |
[INFO] [stdout] 175 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:181:21
[INFO] [stdout]     |
[INFO] [stdout] 181 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:200:21
[INFO] [stdout]     |
[INFO] [stdout] 200 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:216:21
[INFO] [stdout]     |
[INFO] [stdout] 216 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:229:21
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:236:21
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Ox9000`
[INFO] [stdout]    --> src/chip8.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_Ox9000`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:245:21
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     pc += 4;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:247:21
[INFO] [stdout]     |
[INFO] [stdout] 247 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:253:17
[INFO] [stdout]     |
[INFO] [stdout] 253 |                 I = (opcode & 0x0FFF) as u8;
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:254:17
[INFO] [stdout]     |
[INFO] [stdout] 254 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:259:17
[INFO] [stdout]     |
[INFO] [stdout] 259 |                 pc = (opcode & 0x0FFF) + V[0] as u16;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:265:17
[INFO] [stdout]     |
[INFO] [stdout] 265 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `drawFlag` is never read
[INFO] [stdout]    --> src/chip8.rs:296:17
[INFO] [stdout]     |
[INFO] [stdout] 296 |                 drawFlag = true;
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:297:17
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 pc += 2;
[INFO] [stdout]     |                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:304:25
[INFO] [stdout]     |
[INFO] [stdout] 304 |                         pc += 4;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:306:25
[INFO] [stdout]     |
[INFO] [stdout] 306 |                         pc += 2;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:313:25
[INFO] [stdout]     |
[INFO] [stdout] 313 |                         pc += 4;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:315:25
[INFO] [stdout]     |
[INFO] [stdout] 315 |                         pc += 2;
[INFO] [stdout]     |                         ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:326:21
[INFO] [stdout]     |
[INFO] [stdout] 326 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:341:21
[INFO] [stdout]     |
[INFO] [stdout] 341 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:347:21
[INFO] [stdout]     |
[INFO] [stdout] 347 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:353:21
[INFO] [stdout]     |
[INFO] [stdout] 353 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:364:21
[INFO] [stdout]     |
[INFO] [stdout] 364 |                     I += V[((opcode & 0x0F00) >> 8) as usize];
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:365:21
[INFO] [stdout]     |
[INFO] [stdout] 365 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:370:21
[INFO] [stdout]     |
[INFO] [stdout] 370 |                     I = V[((opcode & 0x0F00) >> 8) as usize] * 0x5;
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:371:21
[INFO] [stdout]     |
[INFO] [stdout] 371 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:379:21
[INFO] [stdout]     |
[INFO] [stdout] 379 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:390:21
[INFO] [stdout]     |
[INFO] [stdout] 390 |                     I += ((opcode & 0x0F00) >> 8) as u8 + 1;
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:391:21
[INFO] [stdout]     |
[INFO] [stdout] 391 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `I` is never read
[INFO] [stdout]    --> src/chip8.rs:402:21
[INFO] [stdout]     |
[INFO] [stdout] 402 |                     I += ((opcode & 0x0F00) >> 8) as u8 + 1;
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pc` is never read
[INFO] [stdout]    --> src/chip8.rs:403:21
[INFO] [stdout]     |
[INFO] [stdout] 403 |                     pc += 2;
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `delay_timer` is never read
[INFO] [stdout]    --> src/chip8.rs:412:13
[INFO] [stdout]     |
[INFO] [stdout] 412 |             delay_timer -= 1;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sound_timer` is never read
[INFO] [stdout]    --> src/chip8.rs:419:13
[INFO] [stdout]     |
[INFO] [stdout] 419 |             sound_timer -= 1;
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut memory = &mut self.memory;
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:74:13
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let mut stack = &mut self.stack;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:77:13
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut V = &mut self.V;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut key = &self.key;
[INFO] [stdout]    |             ----^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chip8.rs:275:21
[INFO] [stdout]     |
[INFO] [stdout] 275 |                 let mut x = V[((opcode & 0x0F00) >> 8) as usize];
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chip8.rs:276:21
[INFO] [stdout]     |
[INFO] [stdout] 276 |                 let mut y = V[((opcode & 0x00F0) >> 4) as usize];
[INFO] [stdout]     |                     ----^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chip8.rs:277:21
[INFO] [stdout]     |
[INFO] [stdout] 277 |                 let mut height = opcode & 0x000F;
[INFO] [stdout]     |                     ----^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `debug_render` is never used
[INFO] [stdout]    --> src/chip8.rs:423:12
[INFO] [stdout]     |
[INFO] [stdout] 46  | impl Chip8 {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 423 |     pub fn debug_render(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `V` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     V: SmallVec<[u8; 16]>,
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `I` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     I: u8,
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `drawFlag` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub drawFlag: bool,
[INFO] [stdout]    |         ^^^^^^^^ help: convert the identifier to snake case: `draw_flag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `drawFlag` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let mut drawFlag = self.drawFlag;
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case: `draw_flag`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `V` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:77:17
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let mut V = &mut self.V;
[INFO] [stdout]    |                 ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `I` should have a snake case name
[INFO] [stdout]   --> src/chip8.rs:78:17
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let mut I = self.I;
[INFO] [stdout]    |                 ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Ox9000` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |             Ox9000 => {
[INFO] [stdout]     |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `ox9000`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `keyPress` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:331:29
[INFO] [stdout]     |
[INFO] [stdout] 331 |                     let mut keyPress: bool = false;
[INFO] [stdout]     |                             ^^^^^^^^ help: convert the identifier to snake case: `key_press`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "1eca42c34d294302b7016c9e1a1dfd2e0cdf3d422005c4b19686e09368c8bb83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eca42c34d294302b7016c9e1a1dfd2e0cdf3d422005c4b19686e09368c8bb83", kill_on_drop: false }`
[INFO] [stdout] 1eca42c34d294302b7016c9e1a1dfd2e0cdf3d422005c4b19686e09368c8bb83