[INFO] cloning repository https://github.com/d2ci8xc5/chip8vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/d2ci8xc5/chip8vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd2ci8xc5%2Fchip8vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd2ci8xc5%2Fchip8vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ab98e3f549bdef2e6383a2b9d6e77c71642765c1
[INFO] testing d2ci8xc5/chip8vm against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd2ci8xc5%2Fchip8vm" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/d2ci8xc5/chip8vm on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/d2ci8xc5/chip8vm
[INFO] finished tweaking git repo https://github.com/d2ci8xc5/chip8vm
[INFO] tweaked toml for git repo https://github.com/d2ci8xc5/chip8vm written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/d2ci8xc5/chip8vm 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" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/AngryLawyer/rust-sdl2`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 53789b31c681700a9418a686c562589cd2079abe8ca316056eb9b53775c01ee6
[INFO] running `Command { std: "docker" "start" "-a" "53789b31c681700a9418a686c562589cd2079abe8ca316056eb9b53775c01ee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "53789b31c681700a9418a686c562589cd2079abe8ca316056eb9b53775c01ee6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53789b31c681700a9418a686c562589cd2079abe8ca316056eb9b53775c01ee6", kill_on_drop: false }`
[INFO] [stdout] 53789b31c681700a9418a686c562589cd2079abe8ca316056eb9b53775c01ee6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e50a4b5c4825759c73c86f63c4f90592832eeb227f9541873c868bf159f9c777
[INFO] running `Command { std: "docker" "start" "-a" "e50a4b5c4825759c73c86f63c4f90592832eeb227f9541873c868bf159f9c777", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling sdl2 v0.32.2 (https://github.com/AngryLawyer/rust-sdl2#72d199e5)
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling sdl2-sys v0.32.6 (https://github.com/AngryLawyer/rust-sdl2#72d199e5)
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chip8vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `color` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum color {
[INFO] [stdout]   |          ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Color`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `red` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     red,
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Red`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `green` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     green,
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Green`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `blue` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     blue,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `black` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     black,
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `cpu` should have an upper camel case name
[INFO] [stdout]  --> src/cpu.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct cpu {
[INFO] [stdout]   |            ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cpu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:282:24
[INFO] [stdout]     |
[INFO] [stdout] 282 |         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stdout]     |                        ^                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 282 -         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stdout] 282 +         self.v[0x0f] = self.v[x] & (1 << 7) >> 7;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:311:21
[INFO] [stdout]     |
[INFO] [stdout] 311 |         self.v[x] = (kk & random_byte);
[INFO] [stdout]     |                     ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 311 -         self.v[x] = (kk & random_byte);
[INFO] [stdout] 311 +         self.v[x] = kk & random_byte;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/cpu.rs:319:37
[INFO] [stdout]     |
[INFO] [stdout] 319 |             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stdout]     |                                     ^                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 319 -             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stdout] 319 +             let pixel = self.memory[self.i + (y_offset as usize)];
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:372:32
[INFO] [stdout]     |
[INFO] [stdout] 372 |         self.keypad_register = (x as u8);
[INFO] [stdout]     |                                ^       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 372 -         self.keypad_register = (x as u8);
[INFO] [stdout] 372 +         self.keypad_register = x as u8;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::cpu::cpu`
[INFO] [stdout]  --> src/display.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::cpu::cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `display` should have an upper camel case name
[INFO] [stdout]  --> src/display.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct display {
[INFO] [stdout]   |            ^^^^^^^ help: convert the identifier to upper camel case: `Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `keypad` should have an upper camel case name
[INFO] [stdout]  --> src/keypad.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct keypad {
[INFO] [stdout]   |            ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Keypad`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cpu::cpu as _cpu`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use cpu::cpu as _cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/cpu.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |             (0x0f, _, 0x03, 0x03) => self.op_Fx33(x),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `poll_keypad` is assigned to, but never used
[INFO] [stdout]    --> src/cpu.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let poll_keypad;
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_poll_keypad` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `poll_keypad` is never read
[INFO] [stdout]    --> src/cpu.rs:131:26
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 Ok(x) => poll_keypad = x,
[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: `y`
[INFO] [stdout]    --> src/cpu.rs:262:37
[INFO] [stdout]     |
[INFO] [stdout] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/cpu.rs:281:37
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_true`
[INFO] [stdout]   --> src/display.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let x_true = (x as u32) * SCALE; 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_true`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_true`
[INFO] [stdout]   --> src/display.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 let y_true = (y as u32) * SCALE; 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_true`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `draw_color` is never read
[INFO] [stdout]   --> src/display.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 let mut draw_color = color::black.value();
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/display.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     Ok(x) => continue,
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gfx`
[INFO] [stdout]   --> src/display.rs:57:29
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_gfx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sdl_context`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let sdl_context = sdl2::init().unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sdl_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `color` is never used
[INFO] [stdout]  --> src/color.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum color {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/color.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl color {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 11 |     pub fn value(&self) -> Color {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `cpu` is never constructed
[INFO] [stdout]  --> src/cpu.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct cpu {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/cpu.rs:29:12
[INFO] [stdout]     |
[INFO] [stdout] 28  | impl cpu {
[INFO] [stdout]     | -------- associated items in this implementation
[INFO] [stdout] 29  |     pub fn new(sdl_context: &Sdl) -> cpu {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57  |     pub fn cycle(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     pub fn fetch_opcode(&self) -> u16 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn op_00e0(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 156 |     fn op_00ee(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     fn op_1nnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 167 |     fn op_2nnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     fn op_3xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn op_4xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 192 |     fn op_5xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 201 |     fn op_6xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 |     fn op_7xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 213 |     fn op_8xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 219 |     fn op_8xy1(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 225 |     fn op_8xy2(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |     fn op_8xy3(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     fn op_8xy4(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 251 |     fn op_8xy5(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 270 |     fn op_8xy7(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 288 |     fn op_9xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SCALE` is never used
[INFO] [stdout]  --> src/display.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const SCALE: u32 = 25;
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `display` is never constructed
[INFO] [stdout]  --> src/display.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct display {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `draw`, and `clear` are never used
[INFO] [stdout]   --> src/display.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl display {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(sdl_context: &sdl2::Sdl) -> display {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn draw(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `font` is never used
[INFO] [stdout]  --> src/font.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const font: [u8; 80] = [
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `keypad` is never constructed
[INFO] [stdout]  --> src/keypad.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct keypad {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `poll` are never used
[INFO] [stdout]   --> src/keypad.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl keypad {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 10 |     pub fn new(sdl_context: &sdl2::Sdl) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn poll(&mut self) -> Result<[bool; 16], ()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/cpu.rs:242:12
[INFO] [stdout]     |
[INFO] [stdout] 242 |         if addition > 0xff {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_8xyE` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:281:8
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_8xy_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Annn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:298:8
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_annn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Bnnn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_bnnn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Cxkk` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:309:8
[INFO] [stdout]     |
[INFO] [stdout] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_cxkk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Dxyn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:316:8
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_dxyn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Ex9E` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:342:8
[INFO] [stdout]     |
[INFO] [stdout] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex9_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_ExA1` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:352:8
[INFO] [stdout]     |
[INFO] [stdout] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx07` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:362:8
[INFO] [stdout]     |
[INFO] [stdout] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx07`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx0A` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:369:8
[INFO] [stdout]     |
[INFO] [stdout] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx0_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx15` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:377:8
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx15`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx18` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:383:8
[INFO] [stdout]     |
[INFO] [stdout] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx18`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx1E` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:389:8
[INFO] [stdout]     |
[INFO] [stdout] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx1_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx29` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:395:8
[INFO] [stdout]     |
[INFO] [stdout] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx29`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx33` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:401:8
[INFO] [stdout]     |
[INFO] [stdout] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx33`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx55` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:408:8
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx55`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx65` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:415:8
[INFO] [stdout]     |
[INFO] [stdout] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx65`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `font` should have an upper case name
[INFO] [stdout]  --> src/font.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const font: [u8; 80] = [
[INFO] [stdout]   |           ^^^^ help: convert the identifier to upper case: `FONT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 53 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "e50a4b5c4825759c73c86f63c4f90592832eeb227f9541873c868bf159f9c777", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e50a4b5c4825759c73c86f63c4f90592832eeb227f9541873c868bf159f9c777", kill_on_drop: false }`
[INFO] [stdout] e50a4b5c4825759c73c86f63c4f90592832eeb227f9541873c868bf159f9c777
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9212a9422fb0f69e3d949a8df61933cbbbe08a7b063b05ab49316a73b906814f
[INFO] running `Command { std: "docker" "start" "-a" "9212a9422fb0f69e3d949a8df61933cbbbe08a7b063b05ab49316a73b906814f", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `color` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum color {
[INFO] [stdout]   |          ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Color`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `red` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     red,
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Red`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `green` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     green,
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Green`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `blue` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     blue,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `black` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     black,
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `cpu` should have an upper camel case name
[INFO] [stdout]  --> src/cpu.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct cpu {
[INFO] [stdout]   |            ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cpu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:282:24
[INFO] [stdout]     |
[INFO] [stdout] 282 |         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stdout]     |                        ^                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 282 -         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stdout] 282 +         self.v[0x0f] = self.v[x] & (1 << 7) >> 7;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:311:21
[INFO] [stdout]     |
[INFO] [stdout] 311 |         self.v[x] = (kk & random_byte);
[INFO] [stdout]     |                     ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 311 -         self.v[x] = (kk & random_byte);
[INFO] [stdout] 311 +         self.v[x] = kk & random_byte;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/cpu.rs:319:37
[INFO] [stdout]     |
[INFO] [stdout] 319 |             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stdout]     |                                     ^                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 319 -             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stdout] 319 +             let pixel = self.memory[self.i + (y_offset as usize)];
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:372:32
[INFO] [stdout]     |
[INFO] [stdout] 372 |         self.keypad_register = (x as u8);
[INFO] [stdout]     |                                ^       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 372 -         self.keypad_register = (x as u8);
[INFO] [stdout] 372 +         self.keypad_register = x as u8;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::cpu::cpu`
[INFO] [stdout]  --> src/display.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::cpu::cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `display` should have an upper camel case name
[INFO] [stdout]  --> src/display.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct display {
[INFO] [stdout]   |            ^^^^^^^ help: convert the identifier to upper camel case: `Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `keypad` should have an upper camel case name
[INFO] [stdout]  --> src/keypad.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct keypad {
[INFO] [stdout]   |            ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Keypad`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cpu::cpu as _cpu`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use cpu::cpu as _cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/cpu.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |             (0x0f, _, 0x03, 0x03) => self.op_Fx33(x),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `poll_keypad` is assigned to, but never used
[INFO] [stdout]    --> src/cpu.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let poll_keypad;
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_poll_keypad` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `poll_keypad` is never read
[INFO] [stdout]    --> src/cpu.rs:131:26
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 Ok(x) => poll_keypad = x,
[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: `y`
[INFO] [stdout]    --> src/cpu.rs:262:37
[INFO] [stdout]     |
[INFO] [stdout] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/cpu.rs:281:37
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_true`
[INFO] [stdout]   --> src/display.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let x_true = (x as u32) * SCALE; 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_true`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_true`
[INFO] [stdout]   --> src/display.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 let y_true = (y as u32) * SCALE; 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_true`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `draw_color` is never read
[INFO] [stdout]   --> src/display.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 let mut draw_color = color::black.value();
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/display.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     Ok(x) => continue,
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gfx`
[INFO] [stdout]   --> src/display.rs:57:29
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_gfx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sdl_context`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let sdl_context = sdl2::init().unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sdl_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `red`, `green`, and `blue` are never constructed
[INFO] [stdout]  --> src/color.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum color {
[INFO] [stdout]   |          ----- variants in this enum
[INFO] [stdout] 4 |     red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 5 |     green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     blue,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/cpu.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct cpu {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     v: [u8; 16],
[INFO] [stdout]    |     ^
[INFO] [stdout] 12 |     i: usize,  //u16
[INFO] [stdout] 13 |     pc: usize, //u16
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     pub gfx: [u8; 64 * 32],
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 15 |     pub delay_timer: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 16 |     pub sound_timer: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 17 |     stack: [usize; 16], //u16
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     sp: usize,          //u16
[INFO] [stdout]    |     ^^
[INFO] [stdout] 19 |     key: [bool; 16],
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 20 |
[INFO] [stdout] 21 |     redraw_flag: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 22 |     keypad_wait_flag: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 23 |     keypad_register: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 24 |     keypad: keypad,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 25 |     display: display
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/cpu.rs:57:12
[INFO] [stdout]     |
[INFO] [stdout] 28  | impl cpu {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57  |     pub fn cycle(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     pub fn fetch_opcode(&self) -> u16 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn op_00e0(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 156 |     fn op_00ee(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     fn op_1nnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 167 |     fn op_2nnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     fn op_3xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn op_4xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 192 |     fn op_5xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 201 |     fn op_6xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 |     fn op_7xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 213 |     fn op_8xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 219 |     fn op_8xy1(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 225 |     fn op_8xy2(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |     fn op_8xy3(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     fn op_8xy4(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 251 |     fn op_8xy5(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 270 |     fn op_8xy7(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 288 |     fn op_9xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SCALE` is never used
[INFO] [stdout]  --> src/display.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const SCALE: u32 = 25;
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `canvas` is never read
[INFO] [stdout]   --> src/display.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct display {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 10 |     canvas: Canvas<Window>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `draw` and `clear` are never used
[INFO] [stdout]   --> src/display.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl display {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn draw(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `events` is never read
[INFO] [stdout]  --> src/keypad.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct keypad {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 6 |     events: sdl2::EventPump,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `poll` is never used
[INFO] [stdout]   --> src/keypad.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl keypad {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn poll(&mut self) -> Result<[bool; 16], ()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/cpu.rs:242:12
[INFO] [stdout]     |
[INFO] [stdout] 242 |         if addition > 0xff {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_8xyE` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:281:8
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_8xy_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Annn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:298:8
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_annn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Bnnn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_bnnn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Cxkk` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:309:8
[INFO] [stdout]     |
[INFO] [stdout] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_cxkk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Dxyn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:316:8
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_dxyn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Ex9E` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:342:8
[INFO] [stdout]     |
[INFO] [stdout] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex9_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_ExA1` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:352:8
[INFO] [stdout]     |
[INFO] [stdout] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx07` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:362:8
[INFO] [stdout]     |
[INFO] [stdout] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx07`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx0A` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:369:8
[INFO] [stdout]     |
[INFO] [stdout] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx0_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx15` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:377:8
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx15`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx18` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:383:8
[INFO] [stdout]     |
[INFO] [stdout] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx18`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx1E` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:389:8
[INFO] [stdout]     |
[INFO] [stdout] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx1_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx29` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:395:8
[INFO] [stdout]     |
[INFO] [stdout] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx29`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx33` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:401:8
[INFO] [stdout]     |
[INFO] [stdout] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx33`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx55` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:408:8
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx55`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx65` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:415:8
[INFO] [stdout]     |
[INFO] [stdout] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx65`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `font` should have an upper case name
[INFO] [stdout]  --> src/font.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const font: [u8; 80] = [
[INFO] [stdout]   |           ^^^^ help: convert the identifier to upper case: `FONT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "9212a9422fb0f69e3d949a8df61933cbbbe08a7b063b05ab49316a73b906814f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9212a9422fb0f69e3d949a8df61933cbbbe08a7b063b05ab49316a73b906814f", kill_on_drop: false }`
[INFO] [stdout] 9212a9422fb0f69e3d949a8df61933cbbbe08a7b063b05ab49316a73b906814f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fa89017dbea3dfc830461dfa22ea8b17747240b32380f538a5dc37f643afdfe4
[INFO] running `Command { std: "docker" "start" "-a" "fa89017dbea3dfc830461dfa22ea8b17747240b32380f538a5dc37f643afdfe4", kill_on_drop: false }`
[INFO] [stderr] warning: type `color` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:3:10
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub enum color {
[INFO] [stderr]   |          ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Color`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `red` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     red,
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `Red`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `green` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     green,
[INFO] [stderr]   |     ^^^^^ help: convert the identifier to upper camel case: `Green`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `blue` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     blue,
[INFO] [stderr]   |     ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `black` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     black,
[INFO] [stderr]   |     ^^^^^ help: convert the identifier to upper camel case: `Black`
[INFO] [stderr] 
[INFO] [stderr] warning: type `cpu` should have an upper camel case name
[INFO] [stderr]  --> src/cpu.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct cpu {
[INFO] [stderr]   |            ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cpu`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/cpu.rs:282:24
[INFO] [stderr]     |
[INFO] [stderr] 282 |         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stderr]     |                        ^                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 282 -         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stderr] 282 +         self.v[0x0f] = self.v[x] & (1 << 7) >> 7;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/cpu.rs:311:21
[INFO] [stderr]     |
[INFO] [stderr] 311 |         self.v[x] = (kk & random_byte);
[INFO] [stderr]     |                     ^                ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 311 -         self.v[x] = (kk & random_byte);
[INFO] [stderr] 311 +         self.v[x] = kk & random_byte;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]    --> src/cpu.rs:319:37
[INFO] [stderr]     |
[INFO] [stderr] 319 |             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stderr]     |                                     ^                            ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 319 -             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stderr] 319 +             let pixel = self.memory[self.i + (y_offset as usize)];
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/cpu.rs:372:32
[INFO] [stderr]     |
[INFO] [stderr] 372 |         self.keypad_register = (x as u8);
[INFO] [stderr]     |                                ^       ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 372 -         self.keypad_register = (x as u8);
[INFO] [stderr] 372 +         self.keypad_register = x as u8;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::cpu::cpu`
[INFO] [stderr]  --> src/display.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::cpu::cpu;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `display` should have an upper camel case name
[INFO] [stderr]  --> src/display.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct display {
[INFO] [stderr]   |            ^^^^^^^ help: convert the identifier to upper camel case: `Display`
[INFO] [stderr] 
[INFO] [stderr] warning: type `keypad` should have an upper camel case name
[INFO] [stderr]  --> src/keypad.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct keypad {
[INFO] [stderr]   |            ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Keypad`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `cpu::cpu as _cpu`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use cpu::cpu as _cpu;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/cpu.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |             (0x0f, _, 0x03, 0x03) => self.op_Fx33(x),
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `poll_keypad` is assigned to, but never used
[INFO] [stderr]    --> src/cpu.rs:129:17
[INFO] [stderr]     |
[INFO] [stderr] 129 |             let poll_keypad;
[INFO] [stderr]     |                 ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_poll_keypad` instead
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `poll_keypad` is never read
[INFO] [stderr]    --> src/cpu.rs:131:26
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 Ok(x) => poll_keypad = x,
[INFO] [stderr]     |                          ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/cpu.rs:262:37
[INFO] [stderr]     |
[INFO] [stderr] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/cpu.rs:281:37
[INFO] [stderr]     |
[INFO] [stderr] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x_true`
[INFO] [stderr]   --> src/display.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |                 let x_true = (x as u32) * SCALE; 
[INFO] [stderr]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_true`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y_true`
[INFO] [stderr]   --> src/display.rs:35:21
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 let y_true = (y as u32) * SCALE; 
[INFO] [stderr]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_true`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `draw_color` is never read
[INFO] [stderr]   --> src/display.rs:38:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |                 let mut draw_color = color::black.value();
[INFO] [stderr]    |                         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/display.rs:50:24
[INFO] [stderr]    |
[INFO] [stderr] 50 |                     Ok(x) => continue,
[INFO] [stderr]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gfx`
[INFO] [stderr]   --> src/display.rs:57:29
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stderr]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_gfx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sdl_context`
[INFO] [stderr]   --> src/main.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let sdl_context = sdl2::init().unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sdl_context`
[INFO] [stderr] 
[INFO] [stderr] warning: variants `red`, `green`, and `blue` are never constructed
[INFO] [stderr]  --> src/color.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub enum color {
[INFO] [stderr]   |          ----- variants in this enum
[INFO] [stderr] 4 |     red,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 5 |     green,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 6 |     blue,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: multiple fields are never read
[INFO] [stderr]   --> src/cpu.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | pub struct cpu {
[INFO] [stderr]    |            --- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 11 |     v: [u8; 16],
[INFO] [stderr]    |     ^
[INFO] [stderr] 12 |     i: usize,  //u16
[INFO] [stderr] 13 |     pc: usize, //u16
[INFO] [stderr]    |     ^^
[INFO] [stderr] 14 |     pub gfx: [u8; 64 * 32],
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 15 |     pub delay_timer: u8,
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr] 16 |     pub sound_timer: u8,
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr] 17 |     stack: [usize; 16], //u16
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 18 |     sp: usize,          //u16
[INFO] [stderr]    |     ^^
[INFO] [stderr] 19 |     key: [bool; 16],
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 20 |
[INFO] [stderr] 21 |     redraw_flag: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 22 |     keypad_wait_flag: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 23 |     keypad_register: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 24 |     keypad: keypad,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 25 |     display: display
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: multiple methods are never used
[INFO] [stderr]    --> src/cpu.rs:57:12
[INFO] [stderr]     |
[INFO] [stderr] 28  | impl cpu {
[INFO] [stderr]     | -------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 57  |     pub fn cycle(&mut self) {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 142 |     pub fn fetch_opcode(&self) -> u16 {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 147 |     fn op_00e0(&mut self) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 156 |     fn op_00ee(&mut self) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 162 |     fn op_1nnn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 167 |     fn op_2nnn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 174 |     fn op_3xkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 183 |     fn op_4xkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 192 |     fn op_5xy0(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 201 |     fn op_6xkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 207 |     fn op_7xkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 213 |     fn op_8xy0(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 219 |     fn op_8xy1(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 225 |     fn op_8xy2(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 231 |     fn op_8xy3(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 237 |     fn op_8xy4(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 251 |     fn op_8xy5(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 270 |     fn op_8xy7(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 288 |     fn op_9xy0(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `SCALE` is never used
[INFO] [stderr]  --> src/display.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 | const SCALE: u32 = 25;
[INFO] [stderr]   |       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `canvas` is never read
[INFO] [stderr]   --> src/display.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 9  | pub struct display {
[INFO] [stderr]    |            ------- field in this struct
[INFO] [stderr] 10 |     canvas: Canvas<Window>,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `draw` and `clear` are never used
[INFO] [stderr]   --> src/display.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | impl display {
[INFO] [stderr]    | ------------ methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 31 |     pub fn draw(&mut self, gfx: [u8; 32*64]) {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `events` is never read
[INFO] [stderr]  --> src/keypad.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct keypad {
[INFO] [stderr]   |            ------ field in this struct
[INFO] [stderr] 6 |     events: sdl2::EventPump,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `poll` is never used
[INFO] [stderr]   --> src/keypad.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 9  | impl keypad {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 16 |     pub fn poll(&mut self) -> Result<[bool; 16], ()> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/cpu.rs:242:12
[INFO] [stderr]     |
[INFO] [stderr] 242 |         if addition > 0xff {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_8xyE` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:281:8
[INFO] [stderr]     |
[INFO] [stderr] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_8xy_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Annn` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:298:8
[INFO] [stderr]     |
[INFO] [stderr] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_annn`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Bnnn` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:304:8
[INFO] [stderr]     |
[INFO] [stderr] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_bnnn`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Cxkk` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:309:8
[INFO] [stderr]     |
[INFO] [stderr] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_cxkk`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Dxyn` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:316:8
[INFO] [stderr]     |
[INFO] [stderr] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_dxyn`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Ex9E` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:342:8
[INFO] [stderr]     |
[INFO] [stderr] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex9_e`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_ExA1` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:352:8
[INFO] [stderr]     |
[INFO] [stderr] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex_a1`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx07` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:362:8
[INFO] [stderr]     |
[INFO] [stderr] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx07`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx0A` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:369:8
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx0_a`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx15` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:377:8
[INFO] [stderr]     |
[INFO] [stderr] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx15`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx18` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:383:8
[INFO] [stderr]     |
[INFO] [stderr] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx18`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx1E` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:389:8
[INFO] [stderr]     |
[INFO] [stderr] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx1_e`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx29` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:395:8
[INFO] [stderr]     |
[INFO] [stderr] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx29`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx33` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:401:8
[INFO] [stderr]     |
[INFO] [stderr] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx33`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx55` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:408:8
[INFO] [stderr]     |
[INFO] [stderr] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx55`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx65` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:415:8
[INFO] [stderr]     |
[INFO] [stderr] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx65`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `font` should have an upper case name
[INFO] [stderr]  --> src/font.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub const font: [u8; 80] = [
[INFO] [stderr]   |           ^^^^ help: convert the identifier to upper case: `FONT`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `chip8vm` (bin "chip8vm" test) generated 51 warnings (run `cargo fix --bin "chip8vm" --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chip8vm-d4162c7d85faeb6c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] error: XDG_RUNTIME_DIR not set in the environment.
[INFO] [stdout] test cpu::tests::test_new ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- cpu::tests::test_new stdout ----
[INFO] [stdout] thread 'cpu::tests::test_new' panicked at src/display.rs:15:51:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: "No available video device"
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55e88cd30be5 - std::backtrace_rs::backtrace::libunwind::trace::h59d96bdb08384354
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stdout]    1:     0x55e88cd30be5 - std::backtrace_rs::backtrace::trace_unsynchronized::h9cf5becacfc93fba
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55e88cd30be5 - std::sys_common::backtrace::_print_fmt::h10b76d10405dbd48
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55e88cd30be5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h6ed9e62a156d84e4
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55e88cd5742b - core::fmt::rt::Argument::fmt::h645c680983f03c9f
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/fmt/rt.rs:165:63
[INFO] [stdout]    5:     0x55e88cd5742b - core::fmt::write::h8bcd80919a02be29
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/fmt/mod.rs:1169:21
[INFO] [stdout]    6:     0x55e88cd2e41f - std::io::Write::write_fmt::h8d0c47c662cad79c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/io/mod.rs:1835:15
[INFO] [stdout]    7:     0x55e88cd309be - std::sys_common::backtrace::_print::h6306f131a28d62b0
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55e88cd309be - std::sys_common::backtrace::print::h7079288e0a26dfcc
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55e88cd323e9 - std::panicking::default_hook::{{closure}}::hb063ecec81a736ba
[INFO] [stdout]   10:     0x55e88cd320ae - std::panicking::default_hook::hd56ee406bf547b5c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:295:9
[INFO] [stdout]   11:     0x55e88ccfe7da - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::he5eacdef44c8728f
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   12:     0x55e88ccfe7da - test::test_main::{{closure}}::h0ec9aed229e79095
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x55e88cd329eb - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcbd0d80e1ad4e4f9
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   14:     0x55e88cd329eb - std::panicking::rust_panic_with_hook::h624aa3ca42ebb8f2
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:799:13
[INFO] [stdout]   15:     0x55e88cd32764 - std::panicking::begin_panic_handler::{{closure}}::hbc4e76194a5e287c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:664:13
[INFO] [stdout]   16:     0x55e88cd310a9 - std::sys_common::backtrace::__rust_end_short_backtrace::h847fedc9d1ff7b6d
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55e88cd32497 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:652:5
[INFO] [stdout]   18:     0x55e88ccc7833 - core::panicking::panic_fmt::hec11a924b87ce965
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55e88ccc7c86 - core::result::unwrap_failed::h382691b96ca8c13a
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/result.rs:1654:5
[INFO] [stdout]   20:     0x55e88ccca62a - core::result::Result<T,E>::unwrap::h14cf686e362ef68a
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/result.rs:1077:23
[INFO] [stdout]   21:     0x55e88ccca62a - chip8vm::display::display::new::h9e54439e5646f01a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/display.rs:15:31
[INFO] [stdout]   22:     0x55e88ccca285 - chip8vm::cpu::cpu::new::h1ddb914a11c4da11
[INFO] [stdout]                                at /opt/rustwide/workdir/src/cpu.rs:47:22
[INFO] [stdout]   23:     0x55e88cccac86 - chip8vm::cpu::tests::test_new::hc3d358c966abf1dc
[INFO] [stdout]                                at /opt/rustwide/workdir/src/cpu.rs:430:21
[INFO] [stdout]   24:     0x55e88cccab87 - chip8vm::cpu::tests::test_new::{{closure}}::hab0fe0c18fdbee49
[INFO] [stdout]                                at /opt/rustwide/workdir/src/cpu.rs:428:18
[INFO] [stdout]   25:     0x55e88ccc8566 - core::ops::function::FnOnce::call_once::hdb0beaab7a52e420
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x55e88cd031bb - core::ops::function::FnOnce::call_once::h2e43a8f6f3d94b99
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x55e88cd031bb - test::__rust_begin_short_backtrace::h214c9f2d2d3fee90
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:625:18
[INFO] [stdout]   28:     0x55e88cd028c1 - test::run_test_in_process::{{closure}}::h510b7ba7990692a5
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:648:60
[INFO] [stdout]   29:     0x55e88cd028c1 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4157186197a93871
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   30:     0x55e88cd028c1 - std::panicking::try::do_call::h1bf2463bccd4b28c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:559:40
[INFO] [stdout]   31:     0x55e88cd028c1 - std::panicking::try::hd6d4808c9fab4fa5
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:523:19
[INFO] [stdout]   32:     0x55e88cd028c1 - std::panic::catch_unwind::hd5641d97d123f9f2
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panic.rs:149:14
[INFO] [stdout]   33:     0x55e88cd028c1 - test::run_test_in_process::hc273b71c8b878a4c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:648:27
[INFO] [stdout]   34:     0x55e88cd028c1 - test::run_test::{{closure}}::h6838df834eb8467e
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:569:43
[INFO] [stdout]   35:     0x55e88cccb284 - test::run_test::{{closure}}::h608b98ecff5665fb
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:599:41
[INFO] [stdout]   36:     0x55e88cccb284 - std::sys_common::backtrace::__rust_begin_short_backtrace::hdc4182b97d1042e9
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   37:     0x55e88cccfcb2 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h571773fd21d674c8
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/thread/mod.rs:542:17
[INFO] [stdout]   38:     0x55e88cccfcb2 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hdcd384cf2fa70ba3
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   39:     0x55e88cccfcb2 - std::panicking::try::do_call::h4f1a44bd81423be1
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:559:40
[INFO] [stdout]   40:     0x55e88cccfcb2 - std::panicking::try::h5e02afcb81dcd361
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:523:19
[INFO] [stdout]   41:     0x55e88cccfcb2 - std::panic::catch_unwind::h022f75775bfd8c45
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panic.rs:149:14
[INFO] [stdout]   42:     0x55e88cccfcb2 - std::thread::Builder::spawn_unchecked_::{{closure}}::hf5a62e9e4e6df1f8
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/thread/mod.rs:541:30
[INFO] [stdout]   43:     0x55e88cccfcb2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6d56360aeb9509a7
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   44:     0x55e88cd36bcb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7a343dc551c06baa
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   45:     0x55e88cd36bcb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h30b8111cbaa644f3
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   46:     0x55e88cd36bcb - std::sys::pal::unix::thread::Thread::new::thread_start::h7404e134e61e7a11
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   47:     0x7fdfe6a4cac3 - <unknown>
[INFO] [stdout]   48:     0x7fdfe6adda04 - __clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     cpu::tests::test_new
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin chip8vm`
[INFO] running `Command { std: "docker" "inspect" "fa89017dbea3dfc830461dfa22ea8b17747240b32380f538a5dc37f643afdfe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa89017dbea3dfc830461dfa22ea8b17747240b32380f538a5dc37f643afdfe4", kill_on_drop: false }`
[INFO] [stdout] fa89017dbea3dfc830461dfa22ea8b17747240b32380f538a5dc37f643afdfe4
[INFO] testing d2ci8xc5/chip8vm against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fd2ci8xc5%2Fchip8vm" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/d2ci8xc5/chip8vm on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/d2ci8xc5/chip8vm
[INFO] finished tweaking git repo https://github.com/d2ci8xc5/chip8vm
[INFO] tweaked toml for git repo https://github.com/d2ci8xc5/chip8vm written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/d2ci8xc5/chip8vm 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" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86281afd95433afd089ea9ddfb06be31e6f764a132ea825092cf55464418ba58
[INFO] running `Command { std: "docker" "start" "-a" "86281afd95433afd089ea9ddfb06be31e6f764a132ea825092cf55464418ba58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86281afd95433afd089ea9ddfb06be31e6f764a132ea825092cf55464418ba58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86281afd95433afd089ea9ddfb06be31e6f764a132ea825092cf55464418ba58", kill_on_drop: false }`
[INFO] [stdout] 86281afd95433afd089ea9ddfb06be31e6f764a132ea825092cf55464418ba58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b01a1d2392a673370aa0f7e5f3685fed7defbed9574b842268598b93d50365b0
[INFO] running `Command { std: "docker" "start" "-a" "b01a1d2392a673370aa0f7e5f3685fed7defbed9574b842268598b93d50365b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling sdl2 v0.32.2 (https://github.com/AngryLawyer/rust-sdl2#72d199e5)
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling sdl2-sys v0.32.6 (https://github.com/AngryLawyer/rust-sdl2#72d199e5)
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chip8vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `color` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum color {
[INFO] [stdout]   |          ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Color`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `red` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     red,
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Red`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `green` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     green,
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Green`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `blue` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     blue,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `black` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     black,
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `cpu` should have an upper camel case name
[INFO] [stdout]  --> src/cpu.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct cpu {
[INFO] [stdout]   |            ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cpu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:282:24
[INFO] [stdout]     |
[INFO] [stdout] 282 |         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stdout]     |                        ^                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 282 -         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stdout] 282 +         self.v[0x0f] = self.v[x] & (1 << 7) >> 7;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:311:21
[INFO] [stdout]     |
[INFO] [stdout] 311 |         self.v[x] = (kk & random_byte);
[INFO] [stdout]     |                     ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 311 -         self.v[x] = (kk & random_byte);
[INFO] [stdout] 311 +         self.v[x] = kk & random_byte;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/cpu.rs:319:37
[INFO] [stdout]     |
[INFO] [stdout] 319 |             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stdout]     |                                     ^                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 319 -             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stdout] 319 +             let pixel = self.memory[self.i + (y_offset as usize)];
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:372:32
[INFO] [stdout]     |
[INFO] [stdout] 372 |         self.keypad_register = (x as u8);
[INFO] [stdout]     |                                ^       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 372 -         self.keypad_register = (x as u8);
[INFO] [stdout] 372 +         self.keypad_register = x as u8;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::cpu::cpu`
[INFO] [stdout]  --> src/display.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::cpu::cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `display` should have an upper camel case name
[INFO] [stdout]  --> src/display.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct display {
[INFO] [stdout]   |            ^^^^^^^ help: convert the identifier to upper camel case: `Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `keypad` should have an upper camel case name
[INFO] [stdout]  --> src/keypad.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct keypad {
[INFO] [stdout]   |            ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Keypad`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cpu::cpu as _cpu`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use cpu::cpu as _cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/cpu.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |             (0x0f, _, 0x03, 0x03) => self.op_Fx33(x),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `poll_keypad` is assigned to, but never used
[INFO] [stdout]    --> src/cpu.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let poll_keypad;
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_poll_keypad` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `poll_keypad` is never read
[INFO] [stdout]    --> src/cpu.rs:131:26
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 Ok(x) => poll_keypad = x,
[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: `y`
[INFO] [stdout]    --> src/cpu.rs:262:37
[INFO] [stdout]     |
[INFO] [stdout] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/cpu.rs:281:37
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_true`
[INFO] [stdout]   --> src/display.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let x_true = (x as u32) * SCALE; 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_true`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_true`
[INFO] [stdout]   --> src/display.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 let y_true = (y as u32) * SCALE; 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_true`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `draw_color` is never read
[INFO] [stdout]   --> src/display.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 let mut draw_color = color::black.value();
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/display.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     Ok(x) => continue,
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gfx`
[INFO] [stdout]   --> src/display.rs:57:29
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_gfx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sdl_context`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let sdl_context = sdl2::init().unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sdl_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `color` is never used
[INFO] [stdout]  --> src/color.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum color {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `value` is never used
[INFO] [stdout]   --> src/color.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl color {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 11 |     pub fn value(&self) -> Color {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `cpu` is never constructed
[INFO] [stdout]  --> src/cpu.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct cpu {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/cpu.rs:29:12
[INFO] [stdout]     |
[INFO] [stdout] 28  | impl cpu {
[INFO] [stdout]     | -------- associated items in this implementation
[INFO] [stdout] 29  |     pub fn new(sdl_context: &Sdl) -> cpu {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 57  |     pub fn cycle(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     pub fn fetch_opcode(&self) -> u16 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn op_00e0(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 156 |     fn op_00ee(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     fn op_1nnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 167 |     fn op_2nnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     fn op_3xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn op_4xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 192 |     fn op_5xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 201 |     fn op_6xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 |     fn op_7xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 213 |     fn op_8xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 219 |     fn op_8xy1(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 225 |     fn op_8xy2(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |     fn op_8xy3(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     fn op_8xy4(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 251 |     fn op_8xy5(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 270 |     fn op_8xy7(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 288 |     fn op_9xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SCALE` is never used
[INFO] [stdout]  --> src/display.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const SCALE: u32 = 25;
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `display` is never constructed
[INFO] [stdout]  --> src/display.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct display {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `draw`, and `clear` are never used
[INFO] [stdout]   --> src/display.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl display {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(sdl_context: &sdl2::Sdl) -> display {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn draw(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `font` is never used
[INFO] [stdout]  --> src/font.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const font: [u8; 80] = [
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `keypad` is never constructed
[INFO] [stdout]  --> src/keypad.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct keypad {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `poll` are never used
[INFO] [stdout]   --> src/keypad.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl keypad {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 10 |     pub fn new(sdl_context: &sdl2::Sdl) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn poll(&mut self) -> Result<[bool; 16], ()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/cpu.rs:242:12
[INFO] [stdout]     |
[INFO] [stdout] 242 |         if addition > 0xff {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_8xyE` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:281:8
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_8xy_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Annn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:298:8
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_annn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Bnnn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_bnnn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Cxkk` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:309:8
[INFO] [stdout]     |
[INFO] [stdout] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_cxkk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Dxyn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:316:8
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_dxyn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Ex9E` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:342:8
[INFO] [stdout]     |
[INFO] [stdout] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex9_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_ExA1` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:352:8
[INFO] [stdout]     |
[INFO] [stdout] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx07` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:362:8
[INFO] [stdout]     |
[INFO] [stdout] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx07`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx0A` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:369:8
[INFO] [stdout]     |
[INFO] [stdout] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx0_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx15` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:377:8
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx15`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx18` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:383:8
[INFO] [stdout]     |
[INFO] [stdout] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx18`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx1E` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:389:8
[INFO] [stdout]     |
[INFO] [stdout] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx1_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx29` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:395:8
[INFO] [stdout]     |
[INFO] [stdout] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx29`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx33` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:401:8
[INFO] [stdout]     |
[INFO] [stdout] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx33`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx55` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:408:8
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx55`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx65` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:415:8
[INFO] [stdout]     |
[INFO] [stdout] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx65`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `font` should have an upper case name
[INFO] [stdout]  --> src/font.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const font: [u8; 80] = [
[INFO] [stdout]   |           ^^^^ help: convert the identifier to upper case: `FONT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 53 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.24s
[INFO] running `Command { std: "docker" "inspect" "b01a1d2392a673370aa0f7e5f3685fed7defbed9574b842268598b93d50365b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b01a1d2392a673370aa0f7e5f3685fed7defbed9574b842268598b93d50365b0", kill_on_drop: false }`
[INFO] [stdout] b01a1d2392a673370aa0f7e5f3685fed7defbed9574b842268598b93d50365b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0fb933afdf50cbabc717c3b108ab47552bb3438320d637caaa9e6cd0ab15bb1
[INFO] running `Command { std: "docker" "start" "-a" "c0fb933afdf50cbabc717c3b108ab47552bb3438320d637caaa9e6cd0ab15bb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `color` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum color {
[INFO] [stdout]   |          ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Color`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `red` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     red,
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Red`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `green` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     green,
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Green`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `blue` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     blue,
[INFO] [stdout]   |     ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `black` should have an upper camel case name
[INFO] [stdout]  --> src/color.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     black,
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to upper camel case: `Black`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `cpu` should have an upper camel case name
[INFO] [stdout]  --> src/cpu.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct cpu {
[INFO] [stdout]   |            ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cpu`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:282:24
[INFO] [stdout]     |
[INFO] [stdout] 282 |         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stdout]     |                        ^                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 282 -         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stdout] 282 +         self.v[0x0f] = self.v[x] & (1 << 7) >> 7;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:311:21
[INFO] [stdout]     |
[INFO] [stdout] 311 |         self.v[x] = (kk & random_byte);
[INFO] [stdout]     |                     ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 311 -         self.v[x] = (kk & random_byte);
[INFO] [stdout] 311 +         self.v[x] = kk & random_byte;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/cpu.rs:319:37
[INFO] [stdout]     |
[INFO] [stdout] 319 |             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stdout]     |                                     ^                            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 319 -             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stdout] 319 +             let pixel = self.memory[self.i + (y_offset as usize)];
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/cpu.rs:372:32
[INFO] [stdout]     |
[INFO] [stdout] 372 |         self.keypad_register = (x as u8);
[INFO] [stdout]     |                                ^       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 372 -         self.keypad_register = (x as u8);
[INFO] [stdout] 372 +         self.keypad_register = x as u8;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::cpu::cpu`
[INFO] [stdout]  --> src/display.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::cpu::cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `display` should have an upper camel case name
[INFO] [stdout]  --> src/display.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct display {
[INFO] [stdout]   |            ^^^^^^^ help: convert the identifier to upper camel case: `Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `keypad` should have an upper camel case name
[INFO] [stdout]  --> src/keypad.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct keypad {
[INFO] [stdout]   |            ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Keypad`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cpu::cpu as _cpu`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use cpu::cpu as _cpu;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/cpu.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |             (0x0f, _, 0x03, 0x03) => self.op_Fx33(x),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `poll_keypad` is assigned to, but never used
[INFO] [stdout]    --> src/cpu.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let poll_keypad;
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_poll_keypad` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `poll_keypad` is never read
[INFO] [stdout]    --> src/cpu.rs:131:26
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 Ok(x) => poll_keypad = x,
[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: `y`
[INFO] [stdout]    --> src/cpu.rs:262:37
[INFO] [stdout]     |
[INFO] [stdout] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/cpu.rs:281:37
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_true`
[INFO] [stdout]   --> src/display.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let x_true = (x as u32) * SCALE; 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_true`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_true`
[INFO] [stdout]   --> src/display.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 let y_true = (y as u32) * SCALE; 
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_true`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `draw_color` is never read
[INFO] [stdout]   --> src/display.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 let mut draw_color = color::black.value();
[INFO] [stdout]    |                         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/display.rs:50:24
[INFO] [stdout]    |
[INFO] [stdout] 50 |                     Ok(x) => continue,
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gfx`
[INFO] [stdout]   --> src/display.rs:57:29
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_gfx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sdl_context`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let sdl_context = sdl2::init().unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sdl_context`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `red`, `green`, and `blue` are never constructed
[INFO] [stdout]  --> src/color.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum color {
[INFO] [stdout]   |          ----- variants in this enum
[INFO] [stdout] 4 |     red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 5 |     green,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 6 |     blue,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/cpu.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct cpu {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 11 |     v: [u8; 16],
[INFO] [stdout]    |     ^
[INFO] [stdout] 12 |     i: usize,  //u16
[INFO] [stdout] 13 |     pc: usize, //u16
[INFO] [stdout]    |     ^^
[INFO] [stdout] 14 |     pub gfx: [u8; 64 * 32],
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 15 |     pub delay_timer: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 16 |     pub sound_timer: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 17 |     stack: [usize; 16], //u16
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     sp: usize,          //u16
[INFO] [stdout]    |     ^^
[INFO] [stdout] 19 |     key: [bool; 16],
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 20 |
[INFO] [stdout] 21 |     redraw_flag: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 22 |     keypad_wait_flag: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 23 |     keypad_register: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 24 |     keypad: keypad,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 25 |     display: display
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/cpu.rs:57:12
[INFO] [stdout]     |
[INFO] [stdout] 28  | impl cpu {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57  |     pub fn cycle(&mut self) {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     pub fn fetch_opcode(&self) -> u16 {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     fn op_00e0(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 156 |     fn op_00ee(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 162 |     fn op_1nnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 167 |     fn op_2nnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     fn op_3xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 183 |     fn op_4xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 192 |     fn op_5xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 201 |     fn op_6xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 207 |     fn op_7xkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 213 |     fn op_8xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 219 |     fn op_8xy1(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 225 |     fn op_8xy2(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 231 |     fn op_8xy3(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     fn op_8xy4(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 251 |     fn op_8xy5(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 270 |     fn op_8xy7(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 288 |     fn op_9xy0(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SCALE` is never used
[INFO] [stdout]  --> src/display.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const SCALE: u32 = 25;
[INFO] [stdout]   |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `canvas` is never read
[INFO] [stdout]   --> src/display.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct display {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 10 |     canvas: Canvas<Window>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `draw` and `clear` are never used
[INFO] [stdout]   --> src/display.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl display {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn draw(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `events` is never read
[INFO] [stdout]  --> src/keypad.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct keypad {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] 6 |     events: sdl2::EventPump,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `poll` is never used
[INFO] [stdout]   --> src/keypad.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl keypad {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn poll(&mut self) -> Result<[bool; 16], ()> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]    --> src/cpu.rs:242:12
[INFO] [stdout]     |
[INFO] [stdout] 242 |         if addition > 0xff {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_8xyE` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:281:8
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_8xy_e`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Annn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:298:8
[INFO] [stdout]     |
[INFO] [stdout] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_annn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Bnnn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_bnnn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Cxkk` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:309:8
[INFO] [stdout]     |
[INFO] [stdout] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_cxkk`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Dxyn` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:316:8
[INFO] [stdout]     |
[INFO] [stdout] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_dxyn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Ex9E` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:342:8
[INFO] [stdout]     |
[INFO] [stdout] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex9_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_ExA1` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:352:8
[INFO] [stdout]     |
[INFO] [stdout] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx07` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:362:8
[INFO] [stdout]     |
[INFO] [stdout] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx07`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx0A` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:369:8
[INFO] [stdout]     |
[INFO] [stdout] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx0_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx15` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:377:8
[INFO] [stdout]     |
[INFO] [stdout] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx15`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx18` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:383:8
[INFO] [stdout]     |
[INFO] [stdout] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx18`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx1E` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:389:8
[INFO] [stdout]     |
[INFO] [stdout] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx1_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx29` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:395:8
[INFO] [stdout]     |
[INFO] [stdout] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx29`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx33` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:401:8
[INFO] [stdout]     |
[INFO] [stdout] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx33`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx55` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:408:8
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx55`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `op_Fx65` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:415:8
[INFO] [stdout]     |
[INFO] [stdout] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stdout]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx65`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `font` should have an upper case name
[INFO] [stdout]  --> src/font.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub const font: [u8; 80] = [
[INFO] [stdout]   |           ^^^^ help: convert the identifier to upper case: `FONT`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "c0fb933afdf50cbabc717c3b108ab47552bb3438320d637caaa9e6cd0ab15bb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0fb933afdf50cbabc717c3b108ab47552bb3438320d637caaa9e6cd0ab15bb1", kill_on_drop: false }`
[INFO] [stdout] c0fb933afdf50cbabc717c3b108ab47552bb3438320d637caaa9e6cd0ab15bb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9200d0e32cd7f83e17c64307ef2037cba368205ee2fff4858b9306eb0ebdb533
[INFO] running `Command { std: "docker" "start" "-a" "9200d0e32cd7f83e17c64307ef2037cba368205ee2fff4858b9306eb0ebdb533", kill_on_drop: false }`
[INFO] [stderr] warning: type `color` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:3:10
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub enum color {
[INFO] [stderr]   |          ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Color`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `red` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     red,
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `Red`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `green` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     green,
[INFO] [stderr]   |     ^^^^^ help: convert the identifier to upper camel case: `Green`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `blue` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     blue,
[INFO] [stderr]   |     ^^^^ help: convert the identifier to upper camel case: `Blue`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `black` should have an upper camel case name
[INFO] [stderr]  --> src/color.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     black,
[INFO] [stderr]   |     ^^^^^ help: convert the identifier to upper camel case: `Black`
[INFO] [stderr] 
[INFO] [stderr] warning: type `cpu` should have an upper camel case name
[INFO] [stderr]  --> src/cpu.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct cpu {
[INFO] [stderr]   |            ^^^ help: convert the identifier to upper camel case (notice the capitalization): `Cpu`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/cpu.rs:282:24
[INFO] [stderr]     |
[INFO] [stderr] 282 |         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stderr]     |                        ^                         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 282 -         self.v[0x0f] = (self.v[x] & (1 << 7) >> 7);
[INFO] [stderr] 282 +         self.v[0x0f] = self.v[x] & (1 << 7) >> 7;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/cpu.rs:311:21
[INFO] [stderr]     |
[INFO] [stderr] 311 |         self.v[x] = (kk & random_byte);
[INFO] [stderr]     |                     ^                ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 311 -         self.v[x] = (kk & random_byte);
[INFO] [stderr] 311 +         self.v[x] = kk & random_byte;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]    --> src/cpu.rs:319:37
[INFO] [stderr]     |
[INFO] [stderr] 319 |             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stderr]     |                                     ^                            ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 319 -             let pixel = self.memory[(self.i + (y_offset as usize))];
[INFO] [stderr] 319 +             let pixel = self.memory[self.i + (y_offset as usize)];
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/cpu.rs:372:32
[INFO] [stderr]     |
[INFO] [stderr] 372 |         self.keypad_register = (x as u8);
[INFO] [stderr]     |                                ^       ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 372 -         self.keypad_register = (x as u8);
[INFO] [stderr] 372 +         self.keypad_register = x as u8;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::cpu::cpu`
[INFO] [stderr]  --> src/display.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::cpu::cpu;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `display` should have an upper camel case name
[INFO] [stderr]  --> src/display.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct display {
[INFO] [stderr]   |            ^^^^^^^ help: convert the identifier to upper camel case: `Display`
[INFO] [stderr] 
[INFO] [stderr] warning: type `keypad` should have an upper camel case name
[INFO] [stderr]  --> src/keypad.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct keypad {
[INFO] [stderr]   |            ^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Keypad`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `cpu::cpu as _cpu`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use cpu::cpu as _cpu;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/cpu.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |             (0x0f, _, 0x03, 0x03) => self.op_Fx33(x),
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `poll_keypad` is assigned to, but never used
[INFO] [stderr]    --> src/cpu.rs:129:17
[INFO] [stderr]     |
[INFO] [stderr] 129 |             let poll_keypad;
[INFO] [stderr]     |                 ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: consider using `_poll_keypad` instead
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `poll_keypad` is never read
[INFO] [stderr]    --> src/cpu.rs:131:26
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 Ok(x) => poll_keypad = x,
[INFO] [stderr]     |                          ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/cpu.rs:262:37
[INFO] [stderr]     |
[INFO] [stderr] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/cpu.rs:281:37
[INFO] [stderr]     |
[INFO] [stderr] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x_true`
[INFO] [stderr]   --> src/display.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |                 let x_true = (x as u32) * SCALE; 
[INFO] [stderr]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_true`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y_true`
[INFO] [stderr]   --> src/display.rs:35:21
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 let y_true = (y as u32) * SCALE; 
[INFO] [stderr]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_true`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `draw_color` is never read
[INFO] [stderr]   --> src/display.rs:38:25
[INFO] [stderr]    |
[INFO] [stderr] 38 |                 let mut draw_color = color::black.value();
[INFO] [stderr]    |                         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/display.rs:50:24
[INFO] [stderr]    |
[INFO] [stderr] 50 |                     Ok(x) => continue,
[INFO] [stderr]    |                        ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `gfx`
[INFO] [stderr]   --> src/display.rs:57:29
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stderr]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_gfx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sdl_context`
[INFO] [stderr]   --> src/main.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let sdl_context = sdl2::init().unwrap();
[INFO] [stderr]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sdl_context`
[INFO] [stderr] 
[INFO] [stderr] warning: variants `red`, `green`, and `blue` are never constructed
[INFO] [stderr]  --> src/color.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub enum color {
[INFO] [stderr]   |          ----- variants in this enum
[INFO] [stderr] 4 |     red,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 5 |     green,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 6 |     blue,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: multiple fields are never read
[INFO] [stderr]   --> src/cpu.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | pub struct cpu {
[INFO] [stderr]    |            --- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 11 |     v: [u8; 16],
[INFO] [stderr]    |     ^
[INFO] [stderr] 12 |     i: usize,  //u16
[INFO] [stderr] 13 |     pc: usize, //u16
[INFO] [stderr]    |     ^^
[INFO] [stderr] 14 |     pub gfx: [u8; 64 * 32],
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 15 |     pub delay_timer: u8,
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr] 16 |     pub sound_timer: u8,
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr] 17 |     stack: [usize; 16], //u16
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 18 |     sp: usize,          //u16
[INFO] [stderr]    |     ^^
[INFO] [stderr] 19 |     key: [bool; 16],
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 20 |
[INFO] [stderr] 21 |     redraw_flag: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 22 |     keypad_wait_flag: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 23 |     keypad_register: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 24 |     keypad: keypad,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 25 |     display: display
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: multiple methods are never used
[INFO] [stderr]    --> src/cpu.rs:57:12
[INFO] [stderr]     |
[INFO] [stderr] 28  | impl cpu {
[INFO] [stderr]     | -------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 57  |     pub fn cycle(&mut self) {
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 142 |     pub fn fetch_opcode(&self) -> u16 {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 147 |     fn op_00e0(&mut self) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 156 |     fn op_00ee(&mut self) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 162 |     fn op_1nnn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 167 |     fn op_2nnn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 174 |     fn op_3xkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 183 |     fn op_4xkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 192 |     fn op_5xy0(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 201 |     fn op_6xkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 207 |     fn op_7xkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 213 |     fn op_8xy0(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 219 |     fn op_8xy1(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 225 |     fn op_8xy2(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 231 |     fn op_8xy3(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 237 |     fn op_8xy4(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 251 |     fn op_8xy5(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 262 |     fn op_8xy6(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 270 |     fn op_8xy7(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 288 |     fn op_9xy0(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `SCALE` is never used
[INFO] [stderr]  --> src/display.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 | const SCALE: u32 = 25;
[INFO] [stderr]   |       ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `canvas` is never read
[INFO] [stderr]   --> src/display.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 9  | pub struct display {
[INFO] [stderr]    |            ------- field in this struct
[INFO] [stderr] 10 |     canvas: Canvas<Window>,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `draw` and `clear` are never used
[INFO] [stderr]   --> src/display.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | impl display {
[INFO] [stderr]    | ------------ methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 31 |     pub fn draw(&mut self, gfx: [u8; 32*64]) {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 57 |     pub fn clear(&mut self, gfx: [u8; 32*64]) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `events` is never read
[INFO] [stderr]  --> src/keypad.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct keypad {
[INFO] [stderr]   |            ------ field in this struct
[INFO] [stderr] 6 |     events: sdl2::EventPump,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `poll` is never used
[INFO] [stderr]   --> src/keypad.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 9  | impl keypad {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 16 |     pub fn poll(&mut self) -> Result<[bool; 16], ()> {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]    --> src/cpu.rs:242:12
[INFO] [stderr]     |
[INFO] [stderr] 242 |         if addition > 0xff {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_8xyE` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:281:8
[INFO] [stderr]     |
[INFO] [stderr] 281 |     fn op_8xyE(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_8xy_e`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Annn` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:298:8
[INFO] [stderr]     |
[INFO] [stderr] 298 |     fn op_Annn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_annn`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Bnnn` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:304:8
[INFO] [stderr]     |
[INFO] [stderr] 304 |     fn op_Bnnn(&mut self, nnn: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_bnnn`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Cxkk` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:309:8
[INFO] [stderr]     |
[INFO] [stderr] 309 |     fn op_Cxkk(&mut self, x: usize, kk: u8) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_cxkk`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Dxyn` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:316:8
[INFO] [stderr]     |
[INFO] [stderr] 316 |     fn op_Dxyn(&mut self, x: usize, y: usize, n: u16) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_dxyn`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Ex9E` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:342:8
[INFO] [stderr]     |
[INFO] [stderr] 342 |     fn op_Ex9E(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex9_e`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_ExA1` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:352:8
[INFO] [stderr]     |
[INFO] [stderr] 352 |     fn op_ExA1(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_ex_a1`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx07` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:362:8
[INFO] [stderr]     |
[INFO] [stderr] 362 |     fn op_Fx07(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx07`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx0A` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:369:8
[INFO] [stderr]     |
[INFO] [stderr] 369 |     fn op_Fx0A(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx0_a`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx15` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:377:8
[INFO] [stderr]     |
[INFO] [stderr] 377 |     fn op_Fx15(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx15`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx18` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:383:8
[INFO] [stderr]     |
[INFO] [stderr] 383 |     fn op_Fx18(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx18`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx1E` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:389:8
[INFO] [stderr]     |
[INFO] [stderr] 389 |     fn op_Fx1E(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case: `op_fx1_e`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx29` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:395:8
[INFO] [stderr]     |
[INFO] [stderr] 395 |     fn op_Fx29(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx29`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx33` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:401:8
[INFO] [stderr]     |
[INFO] [stderr] 401 |     fn op_Fx33(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx33`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx55` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:408:8
[INFO] [stderr]     |
[INFO] [stderr] 408 |     fn op_Fx55(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx55`
[INFO] [stderr] 
[INFO] [stderr] warning: method `op_Fx65` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:415:8
[INFO] [stderr]     |
[INFO] [stderr] 415 |     fn op_Fx65(&mut self, x: usize) {
[INFO] [stderr]     |        ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `op_fx65`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `font` should have an upper case name
[INFO] [stderr]  --> src/font.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub const font: [u8; 80] = [
[INFO] [stderr]   |           ^^^^ help: convert the identifier to upper case: `FONT`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `chip8vm` (bin "chip8vm" test) generated 51 warnings (run `cargo fix --bin "chip8vm" --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/chip8vm-d4162c7d85faeb6c)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr] error: XDG_RUNTIME_DIR not set in the environment.
[INFO] [stdout] test cpu::tests::test_new ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- cpu::tests::test_new stdout ----
[INFO] [stdout] thread 'cpu::tests::test_new' panicked at src/display.rs:15:51:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: "No available video device"
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55a6c9469d75 - std::backtrace_rs::backtrace::libunwind::trace::he49dc9a9e3164223
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stdout]    1:     0x55a6c9469d75 - std::backtrace_rs::backtrace::trace_unsynchronized::h3a3e77c68030aa6b
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55a6c9469d75 - std::sys_common::backtrace::_print_fmt::h9479ad2f99afd5d4
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55a6c9469d75 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hfb01aa1fa3fb1821
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55a6c949055b - core::fmt::rt::Argument::fmt::h125e56152abbc1c3
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/fmt/rt.rs:165:63
[INFO] [stdout]    5:     0x55a6c949055b - core::fmt::write::hb0ab4ff05ccfe741
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/fmt/mod.rs:1169:21
[INFO] [stdout]    6:     0x55a6c946765f - std::io::Write::write_fmt::hea6336dbf2fa00b8
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/io/mod.rs:1835:15
[INFO] [stdout]    7:     0x55a6c9469b4e - std::sys_common::backtrace::_print::h79ca548f3a2adf4b
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55a6c9469b4e - std::sys_common::backtrace::print::h9aebf997b2fea2d3
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55a6c946b4b9 - std::panicking::default_hook::{{closure}}::h68a0954af2694526
[INFO] [stdout]   10:     0x55a6c946b20c - std::panicking::default_hook::h5be50cc6849ffb00
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:295:9
[INFO] [stdout]   11:     0x55a6c94378af - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd874405dcbd1d3ed
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   12:     0x55a6c94378af - test::test_main::{{closure}}::h4f26a9df34a84b94
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x55a6c946babb - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h00e96d9c62aa9a12
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   14:     0x55a6c946babb - std::panicking::rust_panic_with_hook::h3c0df6036729334c
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:799:13
[INFO] [stdout]   15:     0x55a6c946b834 - std::panicking::begin_panic_handler::{{closure}}::ha3a21e93c4cfd807
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:664:13
[INFO] [stdout]   16:     0x55a6c946a239 - std::sys_common::backtrace::__rust_end_short_backtrace::h19508a8f8ae71dc9
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55a6c946b567 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:652:5
[INFO] [stdout]   18:     0x55a6c9400813 - core::panicking::panic_fmt::h2ba8af99174d83ea
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55a6c9400c66 - core::result::unwrap_failed::h52f3bbb78b59f71d
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/result.rs:1654:5
[INFO] [stdout]   20:     0x55a6c940360a - core::result::Result<T,E>::unwrap::hcbd5c8a0e1df8f80
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/result.rs:1077:23
[INFO] [stdout]   21:     0x55a6c940360a - chip8vm::display::display::new::hf7b3094e640905a1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/display.rs:15:31
[INFO] [stdout]   22:     0x55a6c9403265 - chip8vm::cpu::cpu::new::h4097fb3c2e6e632d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/cpu.rs:47:22
[INFO] [stdout]   23:     0x55a6c9403c66 - chip8vm::cpu::tests::test_new::h90f417cddae4e7d2
[INFO] [stdout]                                at /opt/rustwide/workdir/src/cpu.rs:430:21
[INFO] [stdout]   24:     0x55a6c9403b67 - chip8vm::cpu::tests::test_new::{{closure}}::ha79ad4e27d7a4636
[INFO] [stdout]                                at /opt/rustwide/workdir/src/cpu.rs:428:18
[INFO] [stdout]   25:     0x55a6c94014f6 - core::ops::function::FnOnce::call_once::hb7078c0a3893c422
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x55a6c943c1cb - core::ops::function::FnOnce::call_once::h18c6bf92212b87a4
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x55a6c943c1cb - test::__rust_begin_short_backtrace::hdcf0edcfa9080086
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:625:18
[INFO] [stdout]   28:     0x55a6c943b891 - test::run_test_in_process::{{closure}}::heac2c4eb375d2d10
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:648:60
[INFO] [stdout]   29:     0x55a6c943b891 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0289bafc8a1cc004
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   30:     0x55a6c943b891 - std::panicking::try::do_call::h5e158f1ad8a5f983
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:559:40
[INFO] [stdout]   31:     0x55a6c943b891 - std::panicking::try::hea3411d60321c4de
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:523:19
[INFO] [stdout]   32:     0x55a6c943b891 - std::panic::catch_unwind::hafb7bb18bc47bbc7
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panic.rs:149:14
[INFO] [stdout]   33:     0x55a6c943b891 - test::run_test_in_process::h74dd138dc7762d99
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:648:27
[INFO] [stdout]   34:     0x55a6c943b891 - test::run_test::{{closure}}::h6b390822e63606cf
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:569:43
[INFO] [stdout]   35:     0x55a6c9404264 - test::run_test::{{closure}}::h6e11dba8131d354b
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:599:41
[INFO] [stdout]   36:     0x55a6c9404264 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha71b3541b59bdbbb
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   37:     0x55a6c9408d32 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hef92127c5ef9e53c
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/thread/mod.rs:542:17
[INFO] [stdout]   38:     0x55a6c9408d32 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h859c109f9d11c92b
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   39:     0x55a6c9408d32 - std::panicking::try::do_call::hbf534c458cd858f0
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:559:40
[INFO] [stdout]   40:     0x55a6c9408d32 - std::panicking::try::h65c18365a7b9ad90
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:523:19
[INFO] [stdout]   41:     0x55a6c9408d32 - std::panic::catch_unwind::h21b25d4c69478c39
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panic.rs:149:14
[INFO] [stdout]   42:     0x55a6c9408d32 - std::thread::Builder::spawn_unchecked_::{{closure}}::h23335f620275a9bf
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/thread/mod.rs:541:30
[INFO] [stdout]   43:     0x55a6c9408d32 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb491dc55513e9b7c
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   44:     0x55a6c946fc8b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h41b39260afcffdc9
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   45:     0x55a6c946fc8b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6694c8dc6dd010c4
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   46:     0x55a6c946fc8b - std::sys::pal::unix::thread::Thread::new::thread_start::hf16038e1c8e19c99
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   47:     0x7faf316e4ac3 - <unknown>
[INFO] [stdout]   48:     0x7faf31775a04 - __clone
[INFO] [stdout]   49:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     cpu::tests::test_new
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin chip8vm`
[INFO] running `Command { std: "docker" "inspect" "9200d0e32cd7f83e17c64307ef2037cba368205ee2fff4858b9306eb0ebdb533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9200d0e32cd7f83e17c64307ef2037cba368205ee2fff4858b9306eb0ebdb533", kill_on_drop: false }`
[INFO] [stdout] 9200d0e32cd7f83e17c64307ef2037cba368205ee2fff4858b9306eb0ebdb533
