[INFO] cloning repository https://github.com/xTarzx/chip8-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xTarzx/chip8-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxTarzx%2Fchip8-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxTarzx%2Fchip8-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b35520132db769f7256e77e6d9e6c88ea812453e
[INFO] checking xTarzx/chip8-rust against try#0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9 for pr-147185
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FxTarzx%2Fchip8-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/xTarzx/chip8-rust
[INFO] finished tweaking git repo https://github.com/xTarzx/chip8-rust
[INFO] tweaked toml for git repo https://github.com/xTarzx/chip8-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xTarzx/chip8-rust on toolchain 0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xTarzx/chip8-rust 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" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4e2f644e55ae291735aac4cd3bfb4cb962322db74fc85879703d77672c46c90
[INFO] running `Command { std: "docker" "start" "-a" "f4e2f644e55ae291735aac4cd3bfb4cb962322db74fc85879703d77672c46c90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4e2f644e55ae291735aac4cd3bfb4cb962322db74fc85879703d77672c46c90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4e2f644e55ae291735aac4cd3bfb4cb962322db74fc85879703d77672c46c90", kill_on_drop: false }`
[INFO] [stdout] f4e2f644e55ae291735aac4cd3bfb4cb962322db74fc85879703d77672c46c90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+0de49ae9e81f9a1e7df6f0783824ce94ed18e8a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 993abb8443cc1041af695b49415cf4f1b5f09aa7eba0d5246e2745cf3043396f
[INFO] running `Command { std: "docker" "start" "-a" "993abb8443cc1041af695b49415cf4f1b5f09aa7eba0d5246e2745cf3043396f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling version-compare v0.1.0
[INFO] [stderr]    Compiling sdl2 v0.35.2
[INFO] [stderr]    Compiling sdl2-sys v0.35.2
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8.rs:252:43
[INFO] [stdout]     |
[INFO] [stdout] 252 |                     self.registers[0xF] = (self.registers[Vx as usize] & 0x1);
[INFO] [stdout]     |                                           ^                                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 252 -                     self.registers[0xF] = (self.registers[Vx as usize] & 0x1);
[INFO] [stdout] 252 +                     self.registers[0xF] = self.registers[Vx as usize] & 0x1 ;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/main.rs:115:21
[INFO] [stdout]     |
[INFO] [stdout] 115 |                     (SCALE as i32 * row as i32),
[INFO] [stdout]     |                     ^                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 115 -                     (SCALE as i32 * row as i32),
[INFO] [stdout] 115 +                     SCALE as i32 * row as i32 ,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/main.rs:116:21
[INFO] [stdout]     |
[INFO] [stdout] 116 |                     (SCALE as i32 * col as i32),
[INFO] [stdout]     |                     ^                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 116 -                     (SCALE as i32 * col as i32),
[INFO] [stdout] 116 +                     SCALE as i32 * col as i32 ,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/chip8.rs:220:33
[INFO] [stdout]     |
[INFO] [stdout] 220 |                     if let Some(sum) =
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `load_rom` is never used
[INFO] [stdout]   --> src/chip8.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Chip8 {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn load_rom(&mut self, filename: &str) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:138:21
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:148:21
[INFO] [stdout]     |
[INFO] [stdout] 148 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:158:21
[INFO] [stdout]     |
[INFO] [stdout] 158 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:159:21
[INFO] [stdout]     |
[INFO] [stdout] 159 |                 let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:168:21
[INFO] [stdout]     |
[INFO] [stdout] 168 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:176:21
[INFO] [stdout]     |
[INFO] [stdout] 176 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:185:25
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:186:25
[INFO] [stdout]     |
[INFO] [stdout] 186 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:193:25
[INFO] [stdout]     |
[INFO] [stdout] 193 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:194:25
[INFO] [stdout]     |
[INFO] [stdout] 194 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:201:25
[INFO] [stdout]     |
[INFO] [stdout] 201 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:202:25
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:209:25
[INFO] [stdout]     |
[INFO] [stdout] 209 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:210:25
[INFO] [stdout]     |
[INFO] [stdout] 210 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:217:25
[INFO] [stdout]     |
[INFO] [stdout] 217 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:236:25
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:237:25
[INFO] [stdout]     |
[INFO] [stdout] 237 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:251:25
[INFO] [stdout]     |
[INFO] [stdout] 251 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:259:25
[INFO] [stdout]     |
[INFO] [stdout] 259 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:270:21
[INFO] [stdout]     |
[INFO] [stdout] 270 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:271:21
[INFO] [stdout]     |
[INFO] [stdout] 271 |                 let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:296:21
[INFO] [stdout]     |
[INFO] [stdout] 296 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:297:21
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:331:25
[INFO] [stdout]     |
[INFO] [stdout] 331 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:351:25
[INFO] [stdout]     |
[INFO] [stdout] 351 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:358:25
[INFO] [stdout]     |
[INFO] [stdout] 358 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:364:25
[INFO] [stdout]     |
[INFO] [stdout] 364 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:371:25
[INFO] [stdout]     |
[INFO] [stdout] 371 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:380:25
[INFO] [stdout]     |
[INFO] [stdout] 380 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:395:25
[INFO] [stdout]     |
[INFO] [stdout] 395 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:403:25
[INFO] [stdout]     |
[INFO] [stdout] 403 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Duration`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time::Duration;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/chip8.rs:252:43
[INFO] [stdout]     |
[INFO] [stdout] 252 |                     self.registers[0xF] = (self.registers[Vx as usize] & 0x1);
[INFO] [stdout]     |                                           ^                                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 252 -                     self.registers[0xF] = (self.registers[Vx as usize] & 0x1);
[INFO] [stdout] 252 +                     self.registers[0xF] = self.registers[Vx as usize] & 0x1 ;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/main.rs:115:21
[INFO] [stdout]     |
[INFO] [stdout] 115 |                     (SCALE as i32 * row as i32),
[INFO] [stdout]     |                     ^                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 115 -                     (SCALE as i32 * row as i32),
[INFO] [stdout] 115 +                     SCALE as i32 * row as i32 ,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/main.rs:116:21
[INFO] [stdout]     |
[INFO] [stdout] 116 |                     (SCALE as i32 * col as i32),
[INFO] [stdout]     |                     ^                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 116 -                     (SCALE as i32 * col as i32),
[INFO] [stdout] 116 +                     SCALE as i32 * col as i32 ,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sum`
[INFO] [stdout]    --> src/chip8.rs:220:33
[INFO] [stdout]     |
[INFO] [stdout] 220 |                     if let Some(sum) =
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_sum`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `load_rom` is never used
[INFO] [stdout]   --> src/chip8.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Chip8 {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn load_rom(&mut self, filename: &str) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:138:21
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:148:21
[INFO] [stdout]     |
[INFO] [stdout] 148 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:158:21
[INFO] [stdout]     |
[INFO] [stdout] 158 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:159:21
[INFO] [stdout]     |
[INFO] [stdout] 159 |                 let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:168:21
[INFO] [stdout]     |
[INFO] [stdout] 168 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:176:21
[INFO] [stdout]     |
[INFO] [stdout] 176 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:185:25
[INFO] [stdout]     |
[INFO] [stdout] 185 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:186:25
[INFO] [stdout]     |
[INFO] [stdout] 186 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:193:25
[INFO] [stdout]     |
[INFO] [stdout] 193 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:194:25
[INFO] [stdout]     |
[INFO] [stdout] 194 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:201:25
[INFO] [stdout]     |
[INFO] [stdout] 201 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:202:25
[INFO] [stdout]     |
[INFO] [stdout] 202 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:209:25
[INFO] [stdout]     |
[INFO] [stdout] 209 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:210:25
[INFO] [stdout]     |
[INFO] [stdout] 210 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:217:25
[INFO] [stdout]     |
[INFO] [stdout] 217 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:218:25
[INFO] [stdout]     |
[INFO] [stdout] 218 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:236:25
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:237:25
[INFO] [stdout]     |
[INFO] [stdout] 237 |                     let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:251:25
[INFO] [stdout]     |
[INFO] [stdout] 251 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:259:25
[INFO] [stdout]     |
[INFO] [stdout] 259 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:270:21
[INFO] [stdout]     |
[INFO] [stdout] 270 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:271:21
[INFO] [stdout]     |
[INFO] [stdout] 271 |                 let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:296:21
[INFO] [stdout]     |
[INFO] [stdout] 296 |                 let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:297:21
[INFO] [stdout]     |
[INFO] [stdout] 297 |                 let Vy = (opcode & 0x00f0) >> 4;
[INFO] [stdout]     |                     ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:331:25
[INFO] [stdout]     |
[INFO] [stdout] 331 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:345:25
[INFO] [stdout]     |
[INFO] [stdout] 345 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:351:25
[INFO] [stdout]     |
[INFO] [stdout] 351 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:358:25
[INFO] [stdout]     |
[INFO] [stdout] 358 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:364:25
[INFO] [stdout]     |
[INFO] [stdout] 364 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:371:25
[INFO] [stdout]     |
[INFO] [stdout] 371 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:380:25
[INFO] [stdout]     |
[INFO] [stdout] 380 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:395:25
[INFO] [stdout]     |
[INFO] [stdout] 395 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/chip8.rs:403:25
[INFO] [stdout]     |
[INFO] [stdout] 403 |                     let Vx = (opcode & 0x0f00) >> 8;
[INFO] [stdout]     |                         ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.89s
[INFO] running `Command { std: "docker" "inspect" "993abb8443cc1041af695b49415cf4f1b5f09aa7eba0d5246e2745cf3043396f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "993abb8443cc1041af695b49415cf4f1b5f09aa7eba0d5246e2745cf3043396f", kill_on_drop: false }`
[INFO] [stdout] 993abb8443cc1041af695b49415cf4f1b5f09aa7eba0d5246e2745cf3043396f