[INFO] cloning repository https://github.com/Jugacu/yet-another-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/Jugacu/yet-another-chip8-emulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJugacu%2Fyet-another-chip8-emulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJugacu%2Fyet-another-chip8-emulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a788e3d19c25a4e625afd17cd4d2a6343fc077e
[INFO] testing Jugacu/yet-another-chip8-emulator against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJugacu%2Fyet-another-chip8-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/Jugacu/yet-another-chip8-emulator on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jugacu/yet-another-chip8-emulator
[INFO] finished tweaking git repo https://github.com/Jugacu/yet-another-chip8-emulator
[INFO] tweaked toml for git repo https://github.com/Jugacu/yet-another-chip8-emulator written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Jugacu/yet-another-chip8-emulator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded console_engine v2.0.1
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cae765d2f9a8193e1916de128ce03f08d37f5c46657d443d8140a2b6890eefb4
[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" "cae765d2f9a8193e1916de128ce03f08d37f5c46657d443d8140a2b6890eefb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cae765d2f9a8193e1916de128ce03f08d37f5c46657d443d8140a2b6890eefb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cae765d2f9a8193e1916de128ce03f08d37f5c46657d443d8140a2b6890eefb4", kill_on_drop: false }`
[INFO] [stdout] cae765d2f9a8193e1916de128ce03f08d37f5c46657d443d8140a2b6890eefb4
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72f9a726fcc3575ca1b4eb29042652182183e7bf28451a724a99b9ee7cd3dca8
[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" "72f9a726fcc3575ca1b4eb29042652182183e7bf28451a724a99b9ee7cd3dca8", kill_on_drop: false }`
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling spin_sleep v1.0.0
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling signal-hook-mio v0.2.1
[INFO] [stderr]    Compiling crossterm v0.20.0
[INFO] [stderr]    Compiling console_engine v2.0.1
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Color`, `MouseButton`, `pixel`
[INFO] [stdout]  --> src/main.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use console_engine::{pixel, Color, KeyCode, MouseButton};
[INFO] [stdout]   |                      ^^^^^  ^^^^^           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]  --> src/core/timer.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/core/mod.rs:31:28
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn load_rom(&self, data: &Vec<u8>) {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta`
[INFO] [stdout]   --> src/core/timer.rs:41:24
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn tick(&mut self, delta: Duration) {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_delta`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core/mod.rs:35:31
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn engine_tick(&self, mut engine: &mut ConsoleEngine) {
[INFO] [stdout]    |                               ----^^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `registers`
[INFO] [stdout]  --> src/core/memory.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     registers: [[u8; 8]; 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: `stack`
[INFO] [stdout]  --> src/core/memory.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     stack: Vec<u8>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `memory`
[INFO] [stdout]   --> src/core/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     memory: Memory,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cpu`
[INFO] [stdout]   --> src/core/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     cpu: CPU,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timer`
[INFO] [stdout]   --> src/core/mod.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     timer: Arc<Mutex<Timer>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `keyboard`
[INFO] [stdout]   --> src/core/mod.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     keyboard: Keyboard
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.11s
[INFO] running `Command { std: "docker" "inspect" "72f9a726fcc3575ca1b4eb29042652182183e7bf28451a724a99b9ee7cd3dca8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72f9a726fcc3575ca1b4eb29042652182183e7bf28451a724a99b9ee7cd3dca8", kill_on_drop: false }`
[INFO] [stdout] 72f9a726fcc3575ca1b4eb29042652182183e7bf28451a724a99b9ee7cd3dca8
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fda623743848e4a40e0589cf06964ab5e01a3919ec9fcf3d0620bbbb6d9c5825
[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" "fda623743848e4a40e0589cf06964ab5e01a3919ec9fcf3d0620bbbb6d9c5825", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Color`, `MouseButton`, `pixel`
[INFO] [stdout]  --> src/main.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use console_engine::{pixel, Color, KeyCode, MouseButton};
[INFO] [stdout]   |                      ^^^^^  ^^^^^           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instant`
[INFO] [stdout]  --> src/core/timer.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::time::{Duration, Instant};
[INFO] [stdout]   |                           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/core/mod.rs:31:28
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn load_rom(&self, data: &Vec<u8>) {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `delta`
[INFO] [stdout]   --> src/core/timer.rs:41:24
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn tick(&mut self, delta: Duration) {
[INFO] [stdout]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_delta`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/core/mod.rs:35:31
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn engine_tick(&self, mut engine: &mut ConsoleEngine) {
[INFO] [stdout]    |                               ----^^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `registers`
[INFO] [stdout]  --> src/core/memory.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     registers: [[u8; 8]; 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: `stack`
[INFO] [stdout]  --> src/core/memory.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     stack: Vec<u8>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `memory`
[INFO] [stdout]   --> src/core/mod.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     memory: Memory,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cpu`
[INFO] [stdout]   --> src/core/mod.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     cpu: CPU,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timer`
[INFO] [stdout]   --> src/core/mod.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     timer: Arc<Mutex<Timer>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `keyboard`
[INFO] [stdout]   --> src/core/mod.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     keyboard: Keyboard
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "fda623743848e4a40e0589cf06964ab5e01a3919ec9fcf3d0620bbbb6d9c5825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fda623743848e4a40e0589cf06964ab5e01a3919ec9fcf3d0620bbbb6d9c5825", kill_on_drop: false }`
[INFO] [stdout] fda623743848e4a40e0589cf06964ab5e01a3919ec9fcf3d0620bbbb6d9c5825
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", 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] c7ffbaaa32b283fb722c40fff6aba6645bf01a5ad1b100b245d4bb817227039e
[INFO] running `Command { std: "docker" "start" "-a" "c7ffbaaa32b283fb722c40fff6aba6645bf01a5ad1b100b245d4bb817227039e", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Color`, `MouseButton`, `pixel`
[INFO] [stderr]  --> src/main.rs:1:22
[INFO] [stderr]   |
[INFO] [stderr] 1 | use console_engine::{pixel, Color, KeyCode, MouseButton};
[INFO] [stderr]   |                      ^^^^^  ^^^^^           ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Instant`
[INFO] [stderr]  --> src/core/timer.rs:3:27
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/core/mod.rs:31:28
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn load_rom(&self, data: &Vec<u8>) {
[INFO] [stderr]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `delta`
[INFO] [stderr]   --> src/core/timer.rs:41:24
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn tick(&mut self, delta: Duration) {
[INFO] [stderr]    |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_delta`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/core/mod.rs:35:31
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn engine_tick(&self, mut engine: &mut ConsoleEngine) {
[INFO] [stderr]    |                               ----^^^^^^
[INFO] [stderr]    |                               |
[INFO] [stderr]    |                               help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `registers`
[INFO] [stderr]  --> src/core/memory.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     registers: [[u8; 8]; 16],
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `stack`
[INFO] [stderr]  --> src/core/memory.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     stack: Vec<u8>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `memory`
[INFO] [stderr]   --> src/core/mod.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     memory: Memory,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `cpu`
[INFO] [stderr]   --> src/core/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     cpu: CPU,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `timer`
[INFO] [stderr]   --> src/core/mod.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     timer: Arc<Mutex<Timer>>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] running 0 tests
[INFO] [stderr] warning: field is never read: `keyboard`
[INFO] [stdout] 
[INFO] [stderr]   --> src/core/mod.rs:18:5
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 18 |     keyboard: Keyboard
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `chip8` (bin "chip8" test) generated 11 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chip8-342f64f7fdf81506)
[INFO] running `Command { std: "docker" "inspect" "c7ffbaaa32b283fb722c40fff6aba6645bf01a5ad1b100b245d4bb817227039e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7ffbaaa32b283fb722c40fff6aba6645bf01a5ad1b100b245d4bb817227039e", kill_on_drop: false }`
[INFO] [stdout] c7ffbaaa32b283fb722c40fff6aba6645bf01a5ad1b100b245d4bb817227039e