[INFO] cloning repository https://github.com/pocketonion/Chip8Emulator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pocketonion/Chip8Emulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpocketonion%2FChip8Emulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpocketonion%2FChip8Emulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 409305cf3c922d855e7b8015f9522d62fe8f344c
[INFO] building pocketonion/Chip8Emulator 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%2Fpocketonion%2FChip8Emulator" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pocketonion/Chip8Emulator 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/pocketonion/Chip8Emulator
[INFO] finished tweaking git repo https://github.com/pocketonion/Chip8Emulator
[INFO] tweaked toml for git repo https://github.com/pocketonion/Chip8Emulator written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/pocketonion/Chip8Emulator 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 723844c009f1d19a2e8ab0868fed7d0c543f436d1e8e1720d754e3659024aa3b
[INFO] running `Command { std: "docker" "start" "-a" "723844c009f1d19a2e8ab0868fed7d0c543f436d1e8e1720d754e3659024aa3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "723844c009f1d19a2e8ab0868fed7d0c543f436d1e8e1720d754e3659024aa3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "723844c009f1d19a2e8ab0868fed7d0c543f436d1e8e1720d754e3659024aa3b", kill_on_drop: false }`
[INFO] [stdout] 723844c009f1d19a2e8ab0868fed7d0c543f436d1e8e1720d754e3659024aa3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 837a5ca29da6a65d0dd2753ecfe31ae89e7021cec8f65f614f437fb969355d45
[INFO] running `Command { std: "docker" "start" "-a" "837a5ca29da6a65d0dd2753ecfe31ae89e7021cec8f65f614f437fb969355d45", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling chip8_emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `time`
[INFO] [stdout]  --> src/main.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{thread, time};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/main.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 let a = (self.opcode & 0x0FFF);
[INFO] [stdout]     |                         ^                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -                 let a = (self.opcode & 0x0FFF);
[INFO] [stdout] 104 +                 let a = self.opcode & 0x0FFF;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/main.rs:113:18
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 let nl:u16 = (self.opcode & 0x0FFF);
[INFO] [stdout]     |                              ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 113 -                 let nl:u16 = (self.opcode & 0x0FFF);
[INFO] [stdout] 113 +                 let nl:u16 = self.opcode & 0x0FFF;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:119:7
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 if(self.v[((self.opcode & 0x0F00) >> 8) as usize] == (self.opcode & 0xFF) as u8) //probably broken
[INFO] [stdout]     |                   ^                                                                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 119 -                 if(self.v[((self.opcode & 0x0F00) >> 8) as usize] == (self.opcode & 0xFF) as u8) //probably broken
[INFO] [stdout] 119 +                 if self.v[((self.opcode & 0x0F00) >> 8) as usize] == (self.opcode & 0xFF) as u8 //probably broken
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:132:7
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 if(self.v[(self.opcode & 0x0F00 >> 8) as usize] != (self.opcode & 0x00FF) as u8)
[INFO] [stdout]     |                   ^                                                                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 132 -                 if(self.v[(self.opcode & 0x0F00 >> 8) as usize] != (self.opcode & 0x00FF) as u8)
[INFO] [stdout] 132 +                 if self.v[(self.opcode & 0x0F00 >> 8) as usize] != (self.opcode & 0x00FF) as u8
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:145:7
[INFO] [stdout]     |
[INFO] [stdout] 145 |                 if(self.v[((self.opcode & 0xF00) >> 8) as usize] == self.v[((self.opcode & 0x00F0) >> 4) as usize])
[INFO] [stdout]     |                   ^                                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 145 -                 if(self.v[((self.opcode & 0xF00) >> 8) as usize] == self.v[((self.opcode & 0x00F0) >> 4) as usize])
[INFO] [stdout] 145 +                 if self.v[((self.opcode & 0xF00) >> 8) as usize] == self.v[((self.opcode & 0x00F0) >> 4) as usize]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:169:7
[INFO] [stdout]     |
[INFO] [stdout] 169 |                 if(((self.v[i] as u16) + (v as u16)) <= 255)
[INFO] [stdout]     |                   ^                                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 169 -                 if(((self.v[i] as u16) + (v as u16)) <= 255)
[INFO] [stdout] 169 +                 if ((self.v[i] as u16) + (v as u16)) <= 255
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/main.rs:183:11
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 match (self.opcode & 0x000F)
[INFO] [stdout]     |                       ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 183 -                 match (self.opcode & 0x000F)
[INFO] [stdout] 183 +                 match self.opcode & 0x000F
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 211 |                         if(self.v[((self.opcode & 0x00F0) >> 4) as usize] > (0xFF - self.v[((self.opcode & 0x0F00) >> 8) as usize]))
[INFO] [stdout]     |                           ^                                                                                                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 211 -                         if(self.v[((self.opcode & 0x00F0) >> 4) as usize] > (0xFF - self.v[((self.opcode & 0x0F00) >> 8) as usize]))
[INFO] [stdout] 211 +                         if self.v[((self.opcode & 0x00F0) >> 4) as usize] > (0xFF - self.v[((self.opcode & 0x0F00) >> 8) as usize])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 225 |                         if(self.v[((self.opcode & 0x00F0) >> 4) as usize] > self.v[((self.opcode & 0x0F00) >> 8) as usize])
[INFO] [stdout]     |                           ^                                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 225 -                         if(self.v[((self.opcode & 0x00F0) >> 4) as usize] > self.v[((self.opcode & 0x0F00) >> 8) as usize])
[INFO] [stdout] 225 +                         if self.v[((self.opcode & 0x00F0) >> 4) as usize] > self.v[((self.opcode & 0x0F00) >> 8) as usize]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/main.rs:246:14
[INFO] [stdout]     |
[INFO] [stdout] 246 |                 self.i = (self.opcode & 0x0FFF);
[INFO] [stdout]     |                          ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 246 -                 self.i = (self.opcode & 0x0FFF);
[INFO] [stdout] 246 +                 self.i = self.opcode & 0x0FFF;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/main.rs:256:26
[INFO] [stdout]     |
[INFO] [stdout] 256 |                 self.v[i as usize] = (n & r);
[INFO] [stdout]     |                                      ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 256 -                 self.v[i as usize] = (n & r);
[INFO] [stdout] 256 +                 self.v[i as usize] = n & r;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:273:9
[INFO] [stdout]     |
[INFO] [stdout] 273 |                         if((pixel & (0x80 >> xline)) != 0)
[INFO] [stdout]     |                           ^                              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 273 -                         if((pixel & (0x80 >> xline)) != 0)
[INFO] [stdout] 273 +                         if (pixel & (0x80 >> xline)) != 0
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:275:10
[INFO] [stdout]     |
[INFO] [stdout] 275 | ...                   if(self.gfx[(x + xline + ((y + yline) * 64)) as usize] == 1)
[INFO] [stdout]     |                         ^                                                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 275 -                             if(self.gfx[(x + xline + ((y + yline) * 64)) as usize] == 1)
[INFO] [stdout] 275 +                             if self.gfx[(x + xline + ((y + yline) * 64)) as usize] == 1
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/main.rs:289:11
[INFO] [stdout]     |
[INFO] [stdout] 289 |                 match (self.opcode & 0x00FF)
[INFO] [stdout]     |                       ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 289 -                 match (self.opcode & 0x00FF)
[INFO] [stdout] 289 +                 match self.opcode & 0x00FF
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:293:9
[INFO] [stdout]     |
[INFO] [stdout] 293 |                         if(self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] != 0)
[INFO] [stdout]     |                           ^                                                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 293 -                         if(self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] != 0)
[INFO] [stdout] 293 +                         if self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] != 0
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 |                         if(self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] == 0)
[INFO] [stdout]     |                           ^                                                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 304 -                         if(self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] == 0)
[INFO] [stdout] 304 +                         if self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] == 0
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/main.rs:321:11
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 match (self.opcode & 0x00FF)
[INFO] [stdout]     |                       ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 321 -                 match (self.opcode & 0x00FF)
[INFO] [stdout] 321 +                 match self.opcode & 0x00FF
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:332:9
[INFO] [stdout]     |
[INFO] [stdout] 332 |                         if(((self.i as u16) + (self.v[((self.opcode & 0xF00) >> 8) as usize] as u16) as u16) > 0xFFF)
[INFO] [stdout]     |                           ^                                                                                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 332 -                         if(((self.i as u16) + (self.v[((self.opcode & 0xF00) >> 8) as usize] as u16) as u16) > 0xFFF)
[INFO] [stdout] 332 +                         if ((self.i as u16) + (self.v[((self.opcode & 0xF00) >> 8) as usize] as u16) as u16) > 0xFFF
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/main.rs:342:24
[INFO] [stdout]     |
[INFO] [stdout] 342 |                         self.i += self.v[(((self.opcode & 0x0F00) >> 8) as usize)] as u16;
[INFO] [stdout]     |                                          ^                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 342 -                         self.i += self.v[(((self.opcode & 0x0F00) >> 8) as usize)] as u16;
[INFO] [stdout] 342 +                         self.i += self.v[((self.opcode & 0x0F00) >> 8) as usize] as u16;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:385:5
[INFO] [stdout]     |
[INFO] [stdout] 385 |         if(self.draw_flag)
[INFO] [stdout]     |           ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 385 -         if(self.draw_flag)
[INFO] [stdout] 385 +         if self.draw_flag
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:391:8
[INFO] [stdout]     |
[INFO] [stdout] 391 |                     if(self.gfx[(y*64) + x] == 0) 
[INFO] [stdout]     |                       ^                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 391 -                     if(self.gfx[(y*64) + x] == 0) 
[INFO] [stdout] 391 +                     if self.gfx[(y*64) + x] == 0 
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]    --> src/main.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 416 |     while true
[INFO] [stdout]     |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]    --> src/main.rs:422:11
[INFO] [stdout]     |
[INFO] [stdout] 422 |         thread::sleep_ms(1000/30);
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pixel` is never read
[INFO] [stdout]    --> src/main.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |                 let mut pixel: u16 = 0;
[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: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:414:10
[INFO] [stdout]     |
[INFO] [stdout] 414 |     let mut t = 0;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:414:6
[INFO] [stdout]     |
[INFO] [stdout] 414 |     let mut t = 0;
[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: field `sound_timer` is never read
[INFO] [stdout]   --> src/main.rs:26:2
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Chip8
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 26 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `debug_render` is never used
[INFO] [stdout]    --> src/main.rs:383:5
[INFO] [stdout]     |
[INFO] [stdout] 30  | impl Chip8
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 383 |     fn debug_render(&mut self)
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.72s
[INFO] running `Command { std: "docker" "inspect" "837a5ca29da6a65d0dd2753ecfe31ae89e7021cec8f65f614f437fb969355d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "837a5ca29da6a65d0dd2753ecfe31ae89e7021cec8f65f614f437fb969355d45", kill_on_drop: false }`
[INFO] [stdout] 837a5ca29da6a65d0dd2753ecfe31ae89e7021cec8f65f614f437fb969355d45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 1f6b0dacc9dd5957aafe73e8d382a8cf58006abba3927b33b72b1375cdaec175
[INFO] running `Command { std: "docker" "start" "-a" "1f6b0dacc9dd5957aafe73e8d382a8cf58006abba3927b33b72b1375cdaec175", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8_emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `time`
[INFO] [stdout]  --> src/main.rs:3:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{thread, time};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/main.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 let a = (self.opcode & 0x0FFF);
[INFO] [stdout]     |                         ^                    ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -                 let a = (self.opcode & 0x0FFF);
[INFO] [stdout] 104 +                 let a = self.opcode & 0x0FFF;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/main.rs:113:18
[INFO] [stdout]     |
[INFO] [stdout] 113 |                 let nl:u16 = (self.opcode & 0x0FFF);
[INFO] [stdout]     |                              ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 113 -                 let nl:u16 = (self.opcode & 0x0FFF);
[INFO] [stdout] 113 +                 let nl:u16 = self.opcode & 0x0FFF;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:119:7
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 if(self.v[((self.opcode & 0x0F00) >> 8) as usize] == (self.opcode & 0xFF) as u8) //probably broken
[INFO] [stdout]     |                   ^                                                                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 119 -                 if(self.v[((self.opcode & 0x0F00) >> 8) as usize] == (self.opcode & 0xFF) as u8) //probably broken
[INFO] [stdout] 119 +                 if self.v[((self.opcode & 0x0F00) >> 8) as usize] == (self.opcode & 0xFF) as u8 //probably broken
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:132:7
[INFO] [stdout]     |
[INFO] [stdout] 132 |                 if(self.v[(self.opcode & 0x0F00 >> 8) as usize] != (self.opcode & 0x00FF) as u8)
[INFO] [stdout]     |                   ^                                                                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 132 -                 if(self.v[(self.opcode & 0x0F00 >> 8) as usize] != (self.opcode & 0x00FF) as u8)
[INFO] [stdout] 132 +                 if self.v[(self.opcode & 0x0F00 >> 8) as usize] != (self.opcode & 0x00FF) as u8
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:145:7
[INFO] [stdout]     |
[INFO] [stdout] 145 |                 if(self.v[((self.opcode & 0xF00) >> 8) as usize] == self.v[((self.opcode & 0x00F0) >> 4) as usize])
[INFO] [stdout]     |                   ^                                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 145 -                 if(self.v[((self.opcode & 0xF00) >> 8) as usize] == self.v[((self.opcode & 0x00F0) >> 4) as usize])
[INFO] [stdout] 145 +                 if self.v[((self.opcode & 0xF00) >> 8) as usize] == self.v[((self.opcode & 0x00F0) >> 4) as usize]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:169:7
[INFO] [stdout]     |
[INFO] [stdout] 169 |                 if(((self.v[i] as u16) + (v as u16)) <= 255)
[INFO] [stdout]     |                   ^                                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 169 -                 if(((self.v[i] as u16) + (v as u16)) <= 255)
[INFO] [stdout] 169 +                 if ((self.v[i] as u16) + (v as u16)) <= 255
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/main.rs:183:11
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 match (self.opcode & 0x000F)
[INFO] [stdout]     |                       ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 183 -                 match (self.opcode & 0x000F)
[INFO] [stdout] 183 +                 match self.opcode & 0x000F
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 211 |                         if(self.v[((self.opcode & 0x00F0) >> 4) as usize] > (0xFF - self.v[((self.opcode & 0x0F00) >> 8) as usize]))
[INFO] [stdout]     |                           ^                                                                                                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 211 -                         if(self.v[((self.opcode & 0x00F0) >> 4) as usize] > (0xFF - self.v[((self.opcode & 0x0F00) >> 8) as usize]))
[INFO] [stdout] 211 +                         if self.v[((self.opcode & 0x00F0) >> 4) as usize] > (0xFF - self.v[((self.opcode & 0x0F00) >> 8) as usize])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 225 |                         if(self.v[((self.opcode & 0x00F0) >> 4) as usize] > self.v[((self.opcode & 0x0F00) >> 8) as usize])
[INFO] [stdout]     |                           ^                                                                                               ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 225 -                         if(self.v[((self.opcode & 0x00F0) >> 4) as usize] > self.v[((self.opcode & 0x0F00) >> 8) as usize])
[INFO] [stdout] 225 +                         if self.v[((self.opcode & 0x00F0) >> 4) as usize] > self.v[((self.opcode & 0x0F00) >> 8) as usize]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/main.rs:246:14
[INFO] [stdout]     |
[INFO] [stdout] 246 |                 self.i = (self.opcode & 0x0FFF);
[INFO] [stdout]     |                          ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 246 -                 self.i = (self.opcode & 0x0FFF);
[INFO] [stdout] 246 +                 self.i = self.opcode & 0x0FFF;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/main.rs:256:26
[INFO] [stdout]     |
[INFO] [stdout] 256 |                 self.v[i as usize] = (n & r);
[INFO] [stdout]     |                                      ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 256 -                 self.v[i as usize] = (n & r);
[INFO] [stdout] 256 +                 self.v[i as usize] = n & r;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:273:9
[INFO] [stdout]     |
[INFO] [stdout] 273 |                         if((pixel & (0x80 >> xline)) != 0)
[INFO] [stdout]     |                           ^                              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 273 -                         if((pixel & (0x80 >> xline)) != 0)
[INFO] [stdout] 273 +                         if (pixel & (0x80 >> xline)) != 0
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:275:10
[INFO] [stdout]     |
[INFO] [stdout] 275 | ...                   if(self.gfx[(x + xline + ((y + yline) * 64)) as usize] == 1)
[INFO] [stdout]     |                         ^                                                        ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 275 -                             if(self.gfx[(x + xline + ((y + yline) * 64)) as usize] == 1)
[INFO] [stdout] 275 +                             if self.gfx[(x + xline + ((y + yline) * 64)) as usize] == 1
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/main.rs:289:11
[INFO] [stdout]     |
[INFO] [stdout] 289 |                 match (self.opcode & 0x00FF)
[INFO] [stdout]     |                       ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 289 -                 match (self.opcode & 0x00FF)
[INFO] [stdout] 289 +                 match self.opcode & 0x00FF
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:293:9
[INFO] [stdout]     |
[INFO] [stdout] 293 |                         if(self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] != 0)
[INFO] [stdout]     |                           ^                                                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 293 -                         if(self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] != 0)
[INFO] [stdout] 293 +                         if self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] != 0
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:304:9
[INFO] [stdout]     |
[INFO] [stdout] 304 |                         if(self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] == 0)
[INFO] [stdout]     |                           ^                                                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 304 -                         if(self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] == 0)
[INFO] [stdout] 304 +                         if self.key[self.v[((self.opcode & 0x0F00) >> 8) as usize] as usize] == 0
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `match` scrutinee expression
[INFO] [stdout]    --> src/main.rs:321:11
[INFO] [stdout]     |
[INFO] [stdout] 321 |                 match (self.opcode & 0x00FF)
[INFO] [stdout]     |                       ^                    ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 321 -                 match (self.opcode & 0x00FF)
[INFO] [stdout] 321 +                 match self.opcode & 0x00FF
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:332:9
[INFO] [stdout]     |
[INFO] [stdout] 332 |                         if(((self.i as u16) + (self.v[((self.opcode & 0xF00) >> 8) as usize] as u16) as u16) > 0xFFF)
[INFO] [stdout]     |                           ^                                                                                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 332 -                         if(((self.i as u16) + (self.v[((self.opcode & 0xF00) >> 8) as usize] as u16) as u16) > 0xFFF)
[INFO] [stdout] 332 +                         if ((self.i as u16) + (self.v[((self.opcode & 0xF00) >> 8) as usize] as u16) as u16) > 0xFFF
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/main.rs:342:24
[INFO] [stdout]     |
[INFO] [stdout] 342 |                         self.i += self.v[(((self.opcode & 0x0F00) >> 8) as usize)] as u16;
[INFO] [stdout]     |                                          ^                                      ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 342 -                         self.i += self.v[(((self.opcode & 0x0F00) >> 8) as usize)] as u16;
[INFO] [stdout] 342 +                         self.i += self.v[((self.opcode & 0x0F00) >> 8) as usize] as u16;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:385:5
[INFO] [stdout]     |
[INFO] [stdout] 385 |         if(self.draw_flag)
[INFO] [stdout]     |           ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 385 -         if(self.draw_flag)
[INFO] [stdout] 385 +         if self.draw_flag
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:391:8
[INFO] [stdout]     |
[INFO] [stdout] 391 |                     if(self.gfx[(y*64) + x] == 0) 
[INFO] [stdout]     |                       ^                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 391 -                     if(self.gfx[(y*64) + x] == 0) 
[INFO] [stdout] 391 +                     if self.gfx[(y*64) + x] == 0 
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: denote infinite loops with `loop { ... }`
[INFO] [stdout]    --> src/main.rs:416:5
[INFO] [stdout]     |
[INFO] [stdout] 416 |     while true
[INFO] [stdout]     |     ^^^^^^^^^^ help: use `loop`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(while_true)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]    --> src/main.rs:422:11
[INFO] [stdout]     |
[INFO] [stdout] 422 |         thread::sleep_ms(1000/30);
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `pixel` is never read
[INFO] [stdout]    --> src/main.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |                 let mut pixel: u16 = 0;
[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: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:414:10
[INFO] [stdout]     |
[INFO] [stdout] 414 |     let mut t = 0;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:414:6
[INFO] [stdout]     |
[INFO] [stdout] 414 |     let mut t = 0;
[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: field `sound_timer` is never read
[INFO] [stdout]   --> src/main.rs:26:2
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Chip8
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 26 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `debug_render` is never used
[INFO] [stdout]    --> src/main.rs:383:5
[INFO] [stdout]     |
[INFO] [stdout] 30  | impl Chip8
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 383 |     fn debug_render(&mut self)
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "1f6b0dacc9dd5957aafe73e8d382a8cf58006abba3927b33b72b1375cdaec175", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f6b0dacc9dd5957aafe73e8d382a8cf58006abba3927b33b72b1375cdaec175", kill_on_drop: false }`
[INFO] [stdout] 1f6b0dacc9dd5957aafe73e8d382a8cf58006abba3927b33b72b1375cdaec175