[INFO] cloning repository https://github.com/Mureke/rChip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mureke/rChip8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMureke%2FrChip8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMureke%2FrChip8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee3539a737c184d3129c5edf179db32028192316
[INFO] checking Mureke/rChip8 against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMureke%2FrChip8" "/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/Mureke/rChip8 on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Mureke/rChip8
[INFO] finished tweaking git repo https://github.com/Mureke/rChip8
[INFO] tweaked toml for git repo https://github.com/Mureke/rChip8 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Mureke/rChip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b2142960c73ef3bea50684f1ac3467dfeaaee7728d715ffa95700d1efec8265
[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" "5b2142960c73ef3bea50684f1ac3467dfeaaee7728d715ffa95700d1efec8265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b2142960c73ef3bea50684f1ac3467dfeaaee7728d715ffa95700d1efec8265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b2142960c73ef3bea50684f1ac3467dfeaaee7728d715ffa95700d1efec8265", kill_on_drop: false }`
[INFO] [stdout] 5b2142960c73ef3bea50684f1ac3467dfeaaee7728d715ffa95700d1efec8265
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff7d7123d9eb984d9fd8733a809e936916baccbe0a0d676d1dfb0cdde7c0ddb5
[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" "ff7d7123d9eb984d9fd8733a809e936916baccbe0a0d676d1dfb0cdde7c0ddb5", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling sdl2-sys v0.30.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking num-iter v0.1.40
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking sdl2 v0.30.0
[INFO] [stderr]     Checking r_chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::utils::RomReader`
[INFO] [stdout]  --> src/cpu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::utils::RomReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> src/cpu.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/cpu.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 | /         /// Fetch and decode opcodes
[INFO] [stdout] 70 | |         /// Since chip8 opcodes are two bytes long we are combining
[INFO] [stdout] 71 | |         /// Two bytes from memory at pc and pc+1
[INFO] [stdout]    | |________________________________________________^
[INFO] [stdout] 72 |           let byte1 = (self.memory[self.pc] as u16) << 8;
[INFO] [stdout]    |           ----------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/utils/event.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/utils/event.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::keyboard::Scancode`
[INFO] [stdout]  --> src/utils/event.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use sdl2::keyboard::Scancode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/utils/event.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | /         /// Method for collecting key events and watching quit events.
[INFO] [stdout] 21 | |         /// Created mostly using this document: https://rust-sdl2.github.io/rust-sdl2/sdl2/keyboard/struct.KeyboardState.html
[INFO] [stdout] 22 | |         ///
[INFO] [stdout] 23 | |         /// Returns:
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |         ///       // Do something
[INFO] [stdout] 31 | |         ///  }
[INFO] [stdout]    | |______________^
[INFO] [stdout] ...
[INFO] [stdout] 35 | /         for event in self.events.poll_iter() {
[INFO] [stdout] 36 | |             match event {
[INFO] [stdout] 37 | |                 Event::Quit { .. } |
[INFO] [stdout] 38 | |                 Event::KeyDown { keycode: Some(Keycode::Escape), .. } => {
[INFO] [stdout] ...  |
[INFO] [stdout] 42 | |             }
[INFO] [stdout] 43 | |         }
[INFO] [stdout]    | |_________- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::utils::RomReader`
[INFO] [stdout]  --> src/cpu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::utils::RomReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::exit`
[INFO] [stdout]  --> src/cpu.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::process::exit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/cpu.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 | /         /// Fetch and decode opcodes
[INFO] [stdout] 70 | |         /// Since chip8 opcodes are two bytes long we are combining
[INFO] [stdout] 71 | |         /// Two bytes from memory at pc and pc+1
[INFO] [stdout]    | |________________________________________________^
[INFO] [stdout] 72 |           let byte1 = (self.memory[self.pc] as u16) << 8;
[INFO] [stdout]    |           ----------------------------------------------- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/utils/event.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]  --> src/utils/event.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::Read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::keyboard::Scancode`
[INFO] [stdout]  --> src/utils/event.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use sdl2::keyboard::Scancode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/utils/event.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | /         /// Method for collecting key events and watching quit events.
[INFO] [stdout] 21 | |         /// Created mostly using this document: https://rust-sdl2.github.io/rust-sdl2/sdl2/keyboard/struct.KeyboardState.html
[INFO] [stdout] 22 | |         ///
[INFO] [stdout] 23 | |         /// Returns:
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |         ///       // Do something
[INFO] [stdout] 31 | |         ///  }
[INFO] [stdout]    | |______________^
[INFO] [stdout] ...
[INFO] [stdout] 35 | /         for event in self.events.poll_iter() {
[INFO] [stdout] 36 | |             match event {
[INFO] [stdout] 37 | |                 Event::Quit { .. } |
[INFO] [stdout] 38 | |                 Event::KeyDown { keycode: Some(Keycode::Escape), .. } => {
[INFO] [stdout] ...  |
[INFO] [stdout] 42 | |             }
[INFO] [stdout] 43 | |         }
[INFO] [stdout]    | |_________- rustdoc does not generate documentation for expressions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::time;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]   --> src/utils/audio.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 0.0..=0.5 => self.volume,
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(illegal_floating_point_literal_pattern)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]   --> src/utils/audio.rs:56:23
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 0.0..=0.5 => self.volume,
[INFO] [stdout]    |                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `audio`
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut audio = Audio::new(&sdl2_context);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_audio`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]   --> src/main.rs:43:18
[INFO] [stdout]    |
[INFO] [stdout] 43 |     while let Ok(event) = event_handler.event_poller() {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut audio = Audio::new(&sdl2_context);
[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: floating-point types cannot be used in patterns
[INFO] [stdout]   --> src/utils/audio.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 0.0..=0.5 => self.volume,
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(illegal_floating_point_literal_pattern)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]   --> src/utils/audio.rs:56:23
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 0.0..=0.5 => self.volume,
[INFO] [stdout]    |                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `audio`
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut audio = Audio::new(&sdl2_context);
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_audio`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event`
[INFO] [stdout]   --> src/main.rs:43:18
[INFO] [stdout]    |
[INFO] [stdout] 43 |     while let Ok(event) = event_handler.event_poller() {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_event`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: floating-point types cannot be used in patterns
[INFO] [stdout]   --> src/utils/audio.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 0.0..=0.5 => self.volume,
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut audio = Audio::new(&sdl2_context);
[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: floating-point types cannot be used in patterns
[INFO] [stdout]   --> src/utils/audio.rs:56:17
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 0.0..=0.5 => self.volume,
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #41620 <https://github.com/rust-lang/rust/issues/41620>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `v`
[INFO] [stdout]   --> src/cpu.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     v: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]   --> src/cpu.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     i: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delay_timer`
[INFO] [stdout]   --> src/cpu.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     delay_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/cpu.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]   --> src/cpu.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     stack: [usize; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sp`
[INFO] [stdout]   --> src/cpu.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     sp: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `keys`
[INFO] [stdout]   --> src/cpu.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     keys: [bool; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `keys_updated`
[INFO] [stdout]   --> src/cpu.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     keys_updated: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `display_tester`
[INFO] [stdout]   --> src/utils/display.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn display_tester(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]  --> src/utils/rom_reader.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     size: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `device`
[INFO] [stdout]  --> src/utils/audio.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     device: AudioDevice<SquareWave>
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_audio`
[INFO] [stdout]   --> src/utils/audio.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn start_audio(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stop_audio`
[INFO] [stdout]   --> src/utils/audio.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn stop_audio(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `v`
[INFO] [stdout]   --> src/cpu.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     v: [u8; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i`
[INFO] [stdout]   --> src/cpu.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     i: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delay_timer`
[INFO] [stdout]   --> src/cpu.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     delay_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/cpu.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `stack`
[INFO] [stdout]   --> src/cpu.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     stack: [usize; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sp`
[INFO] [stdout]   --> src/cpu.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     sp: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `keys`
[INFO] [stdout]   --> src/cpu.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     keys: [bool; 16],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `keys_updated`
[INFO] [stdout]   --> src/cpu.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     keys_updated: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `display_tester`
[INFO] [stdout]   --> src/utils/display.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn display_tester(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]  --> src/utils/rom_reader.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     size: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `device`
[INFO] [stdout]  --> src/utils/audio.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     device: AudioDevice<SquareWave>
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `start_audio`
[INFO] [stdout]   --> src/utils/audio.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn start_audio(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `stop_audio`
[INFO] [stdout]   --> src/utils/audio.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn stop_audio(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.94s
[INFO] running `Command { std: "docker" "inspect" "ff7d7123d9eb984d9fd8733a809e936916baccbe0a0d676d1dfb0cdde7c0ddb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff7d7123d9eb984d9fd8733a809e936916baccbe0a0d676d1dfb0cdde7c0ddb5", kill_on_drop: false }`
[INFO] [stdout] ff7d7123d9eb984d9fd8733a809e936916baccbe0a0d676d1dfb0cdde7c0ddb5