[INFO] cloning repository https://github.com/danbruno/chip8-emulator [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danbruno/chip8-emulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanbruno%2Fchip8-emulator", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanbruno%2Fchip8-emulator'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ae5ca20856bc351be3ef07fe7a3c7c0cf2ea4964 [INFO] checking danbruno/chip8-emulator against beta for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanbruno%2Fchip8-emulator" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/danbruno/chip8-emulator on toolchain beta [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/danbruno/chip8-emulator [INFO] finished tweaking git repo https://github.com/danbruno/chip8-emulator [INFO] tweaked toml for git repo https://github.com/danbruno/chip8-emulator written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/danbruno/chip8-emulator already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a0b6d8873f500ad3b144265bb1613cdc72050b7786667732d734e0c1ad91dda9 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "a0b6d8873f500ad3b144265bb1613cdc72050b7786667732d734e0c1ad91dda9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a0b6d8873f500ad3b144265bb1613cdc72050b7786667732d734e0c1ad91dda9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a0b6d8873f500ad3b144265bb1613cdc72050b7786667732d734e0c1ad91dda9", kill_on_drop: false }` [INFO] [stdout] a0b6d8873f500ad3b144265bb1613cdc72050b7786667732d734e0c1ad91dda9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] a137a3d9bd10e5e480d23e87886fba939897b3aa0cda1fd7db6ea89478f13c33 [INFO] running `Command { std: "docker" "start" "-a" "a137a3d9bd10e5e480d23e87886fba939897b3aa0cda1fd7db6ea89478f13c33", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.80 [INFO] [stderr] Checking once_cell v1.4.1 [INFO] [stderr] Checking ttf-parser v0.6.2 [INFO] [stderr] Checking ab_glyph_rasterizer v0.1.4 [INFO] [stderr] Checking lazycell v1.3.0 [INFO] [stderr] Compiling winit v0.23.0 [INFO] [stderr] Compiling wayland-sys v0.28.1 [INFO] [stderr] Checking libloading v0.6.5 [INFO] [stderr] Compiling x11-dl v2.18.5 [INFO] [stderr] Compiling nom v5.1.2 [INFO] [stderr] Compiling gl_generator v0.14.0 [INFO] [stderr] Compiling wayland-scanner v0.28.1 [INFO] [stderr] Checking dlib v0.4.2 [INFO] [stderr] Compiling glutin_egl_sys v0.1.5 [INFO] [stderr] Compiling glutin_glx_sys v0.1.7 [INFO] [stderr] Compiling wayland-client v0.28.1 [INFO] [stderr] Compiling wayland-protocols v0.28.1 [INFO] [stderr] Checking owned_ttf_parser v0.6.0 [INFO] [stderr] Checking rusttype v0.9.2 [INFO] [stderr] Checking andrew v0.3.1 [INFO] [stderr] Checking nix v0.18.0 [INFO] [stderr] Checking net2 v0.2.35 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking getrandom v0.1.15 [INFO] [stderr] Checking memmap v0.7.0 [INFO] [stderr] Checking parking_lot_core v0.8.0 [INFO] [stderr] Checking raw-window-handle v0.3.3 [INFO] [stderr] Checking shared_library v0.1.9 [INFO] [stderr] Checking osmesa-sys v0.1.2 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking mio v0.6.22 [INFO] [stderr] Checking parking_lot v0.11.0 [INFO] [stderr] Checking xcursor v0.3.2 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking mio-extras v2.0.6 [INFO] [stderr] Checking wayland-commons v0.28.1 [INFO] [stderr] Checking calloop v0.6.5 [INFO] [stderr] Checking wayland-cursor v0.28.1 [INFO] [stderr] Checking wayland-egl v0.28.1 [INFO] [stderr] Checking smithay-client-toolkit v0.12.0 [INFO] [stderr] Checking glutin v0.25.1 [INFO] [stderr] Checking nes_emulator v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/cpu.rs:345:16 [INFO] [stdout] | [INFO] [stdout] 345 | if (self.gpu.screen[i] > 0) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/cpu.rs:352:16 [INFO] [stdout] | [INFO] [stdout] 352 | if (i % 64 == 0) { [INFO] [stdout] | ^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ElementState` [INFO] [stdout] --> src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | ElementState, Event, KeyboardInput, VirtualKeyCode, WindowEvent, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `EventLoop` [INFO] [stdout] --> src/main.rs:12:39 [INFO] [stdout] | [INFO] [stdout] 12 | use glutin::event_loop::{ControlFlow, EventLoop}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `glutin::window::WindowBuilder` [INFO] [stdout] --> src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use glutin::window::WindowBuilder; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `glutin::ContextBuilder` [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use glutin::ContextBuilder; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `SystemTime` [INFO] [stdout] --> src/main.rs:15:17 [INFO] [stdout] | [INFO] [stdout] 15 | use std::time::{SystemTime, Instant}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/cpu.rs:345:16 [INFO] [stdout] | [INFO] [stdout] 345 | if (self.gpu.screen[i] > 0) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around `if` condition [INFO] [stdout] --> src/cpu.rs:352:16 [INFO] [stdout] | [INFO] [stdout] 352 | if (i % 64 == 0) { [INFO] [stdout] | ^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ElementState` [INFO] [stdout] --> src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | ElementState, Event, KeyboardInput, VirtualKeyCode, WindowEvent, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `EventLoop` [INFO] [stdout] --> src/main.rs:12:39 [INFO] [stdout] | [INFO] [stdout] 12 | use glutin::event_loop::{ControlFlow, EventLoop}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `glutin::window::WindowBuilder` [INFO] [stdout] --> src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | use glutin::window::WindowBuilder; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `glutin::ContextBuilder` [INFO] [stdout] --> src/main.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use glutin::ContextBuilder; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `SystemTime` [INFO] [stdout] --> src/main.rs:15:17 [INFO] [stdout] | [INFO] [stdout] 15 | use std::time::{SystemTime, Instant}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `gpu` [INFO] [stdout] --> src/main.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let gpu = Gpu::new(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_gpu` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `is_maximized` [INFO] [stdout] --> src/main.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let mut is_maximized = false; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_maximized` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `erased` [INFO] [stdout] --> src/cpu.rs:321:13 [INFO] [stdout] | [INFO] [stdout] 321 | let mut erased = 0; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_erased` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/cpu.rs:324:13 [INFO] [stdout] | [INFO] [stdout] 324 | let mut b:u8 = n as u8; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/cpu.rs:363:42 [INFO] [stdout] | [INFO] [stdout] 363 | fn check_stored_key_equal(&mut self, x: usize) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/cpu.rs:368:46 [INFO] [stdout] | [INFO] [stdout] 368 | fn check_stored_key_not_equal(&mut self, x: usize) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/gpu.rs:17:28 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn draw(&mut self, x: u8, y: u8, n: usize) -> u8 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/gpu.rs:17:35 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn draw(&mut self, x: u8, y: u8, n: usize) -> u8 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/gpu.rs:17:42 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn draw(&mut self, x: u8, y: u8, n: usize) -> u8 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let mut is_maximized = false; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let mut frequency = 600; //Hz [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/cpu.rs:321:13 [INFO] [stdout] | [INFO] [stdout] 321 | let mut erased = 0; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/cpu.rs:322:13 [INFO] [stdout] | [INFO] [stdout] 322 | let mut coord_x = self.v[x] as usize; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/cpu.rs:323:13 [INFO] [stdout] | [INFO] [stdout] 323 | let mut coord_y = self.v[y] as usize; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/cpu.rs:324:13 [INFO] [stdout] | [INFO] [stdout] 324 | let mut b:u8 = n as u8; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `WIDTH` [INFO] [stdout] --> src/gpu.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | pub const WIDTH: usize = 64; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `HEIGHT` [INFO] [stdout] --> src/gpu.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | pub const HEIGHT: usize = 32; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `draw` [INFO] [stdout] --> src/gpu.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn draw(&mut self, x: u8, y: u8, n: usize) -> u8 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `has_keys` [INFO] [stdout] --> src/input.rs:44:12 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn has_keys(&mut self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 26 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `gpu` [INFO] [stdout] --> src/main.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | let gpu = Gpu::new(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_gpu` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `is_maximized` [INFO] [stdout] --> src/main.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let mut is_maximized = false; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_maximized` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `erased` [INFO] [stdout] --> src/cpu.rs:321:13 [INFO] [stdout] | [INFO] [stdout] 321 | let mut erased = 0; [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_erased` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/cpu.rs:324:13 [INFO] [stdout] | [INFO] [stdout] 324 | let mut b:u8 = n as u8; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/cpu.rs:363:42 [INFO] [stdout] | [INFO] [stdout] 363 | fn check_stored_key_equal(&mut self, x: usize) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/cpu.rs:368:46 [INFO] [stdout] | [INFO] [stdout] 368 | fn check_stored_key_not_equal(&mut self, x: usize) { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/gpu.rs:17:28 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn draw(&mut self, x: u8, y: u8, n: usize) -> u8 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `y` [INFO] [stdout] --> src/gpu.rs:17:35 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn draw(&mut self, x: u8, y: u8, n: usize) -> u8 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/gpu.rs:17:42 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn draw(&mut self, x: u8, y: u8, n: usize) -> u8 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | let mut is_maximized = false; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:48:9 [INFO] [stdout] | [INFO] [stdout] 48 | let mut frequency = 600; //Hz [INFO] [stdout] | ----^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/cpu.rs:321:13 [INFO] [stdout] | [INFO] [stdout] 321 | let mut erased = 0; [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/cpu.rs:322:13 [INFO] [stdout] | [INFO] [stdout] 322 | let mut coord_x = self.v[x] as usize; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/cpu.rs:323:13 [INFO] [stdout] | [INFO] [stdout] 323 | let mut coord_y = self.v[y] as usize; [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/cpu.rs:324:13 [INFO] [stdout] | [INFO] [stdout] 324 | let mut b:u8 = n as u8; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `WIDTH` [INFO] [stdout] --> src/gpu.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | pub const WIDTH: usize = 64; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: constant is never used: `HEIGHT` [INFO] [stdout] --> src/gpu.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | pub const HEIGHT: usize = 32; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `draw` [INFO] [stdout] --> src/gpu.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn draw(&mut self, x: u8, y: u8, n: usize) -> u8 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `has_keys` [INFO] [stdout] --> src/input.rs:44:12 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn has_keys(&mut self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 26 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 59.44s [INFO] running `Command { std: "docker" "inspect" "a137a3d9bd10e5e480d23e87886fba939897b3aa0cda1fd7db6ea89478f13c33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a137a3d9bd10e5e480d23e87886fba939897b3aa0cda1fd7db6ea89478f13c33", kill_on_drop: false }` [INFO] [stdout] a137a3d9bd10e5e480d23e87886fba939897b3aa0cda1fd7db6ea89478f13c33