[INFO] cloning repository https://github.com/pdamianik/Chip8Emu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pdamianik/Chip8Emu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpdamianik%2FChip8Emu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpdamianik%2FChip8Emu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 77711f09b732dafb5a7a32bbcd4c0b2ad6daee0d
[INFO] testing pdamianik/Chip8Emu against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpdamianik%2FChip8Emu" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pdamianik/Chip8Emu on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pdamianik/Chip8Emu
[INFO] finished tweaking git repo https://github.com/pdamianik/Chip8Emu
[INFO] tweaked toml for git repo https://github.com/pdamianik/Chip8Emu written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/pdamianik/Chip8Emu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb3b6aac05aefe1ba2e9677bb0d9f0a0ef5872ae751a20bf433777a2804d9d25
[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" "eb3b6aac05aefe1ba2e9677bb0d9f0a0ef5872ae751a20bf433777a2804d9d25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb3b6aac05aefe1ba2e9677bb0d9f0a0ef5872ae751a20bf433777a2804d9d25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb3b6aac05aefe1ba2e9677bb0d9f0a0ef5872ae751a20bf433777a2804d9d25", kill_on_drop: false }`
[INFO] [stdout] eb3b6aac05aefe1ba2e9677bb0d9f0a0ef5872ae751a20bf433777a2804d9d25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--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] cf35fee2ee920e6780c0429009e0e3a9575602dcd0a0b6fd963868fa496e30bc
[INFO] running `Command { std: "docker" "start" "-a" "cf35fee2ee920e6780c0429009e0e3a9575602dcd0a0b6fd963868fa496e30bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling chip8emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `changes`
[INFO] [stdout]    --> src/frontend/term.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub fn init(changes: Receiver<DisplayCmd>, keyboard_sender: Sender<[u8; 4]>, beep: Arc<Mutex<bool>>) {
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_changes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyboard_sender`
[INFO] [stdout]    --> src/frontend/term.rs:145:44
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub fn init(changes: Receiver<DisplayCmd>, keyboard_sender: Sender<[u8; 4]>, beep: Arc<Mutex<bool>>) {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyboard_sender`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `beep`
[INFO] [stdout]    --> src/frontend/term.rs:145:78
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub fn init(changes: Receiver<DisplayCmd>, keyboard_sender: Sender<[u8; 4]>, beep: Arc<Mutex<bool>>) {
[INFO] [stdout]     |                                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_beep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EXEC_SPEED`
[INFO] [stdout]    --> src/emu.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | const EXEC_SPEED: u64 = 700;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EXEC_DELAY`
[INFO] [stdout]    --> src/emu.rs:123:1
[INFO] [stdout]     |
[INFO] [stdout] 123 | const EXEC_DELAY: Duration = Duration::from_nanos(1_000_000_000u64/EXEC_SPEED);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_ui`
[INFO] [stdout]   --> src/frontend/term.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn render_ui() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_change`
[INFO] [stdout]   --> src/frontend/term.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn render_change(change: DisplayCmd) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_changes`
[INFO] [stdout]   --> src/frontend/term.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn render_changes(display_cmds: Receiver<DisplayCmd>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `keyboard_init`
[INFO] [stdout]    --> src/frontend/term.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn keyboard_init(sender: Sender<[u8; 4]>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bell_init`
[INFO] [stdout]    --> src/frontend/term.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn bell_init(beep: Arc<Mutex<bool>>) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `console_exit`
[INFO] [stdout]    --> src/frontend/term.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn console_exit() {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.44s
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cf35fee2ee920e6780c0429009e0e3a9575602dcd0a0b6fd963868fa496e30bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf35fee2ee920e6780c0429009e0e3a9575602dcd0a0b6fd963868fa496e30bc", kill_on_drop: false }`
[INFO] [stdout] cf35fee2ee920e6780c0429009e0e3a9575602dcd0a0b6fd963868fa496e30bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--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] 4ec2076ccc0eddb89234e44e56dff4944c4bef9b990c4f20b0dd92bf61ca2598
[INFO] running `Command { std: "docker" "start" "-a" "4ec2076ccc0eddb89234e44e56dff4944c4bef9b990c4f20b0dd92bf61ca2598", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `changes`
[INFO] [stdout]    --> src/frontend/term.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub fn init(changes: Receiver<DisplayCmd>, keyboard_sender: Sender<[u8; 4]>, beep: Arc<Mutex<bool>>) {
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_changes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyboard_sender`
[INFO] [stdout]    --> src/frontend/term.rs:145:44
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub fn init(changes: Receiver<DisplayCmd>, keyboard_sender: Sender<[u8; 4]>, beep: Arc<Mutex<bool>>) {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyboard_sender`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `beep`
[INFO] [stdout]    --> src/frontend/term.rs:145:78
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub fn init(changes: Receiver<DisplayCmd>, keyboard_sender: Sender<[u8; 4]>, beep: Arc<Mutex<bool>>) {
[INFO] [stdout]     |                                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_beep`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EXEC_SPEED`
[INFO] [stdout]    --> src/emu.rs:121:1
[INFO] [stdout]     |
[INFO] [stdout] 121 | const EXEC_SPEED: u64 = 700;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EXEC_DELAY`
[INFO] [stdout]    --> src/emu.rs:123:1
[INFO] [stdout]     |
[INFO] [stdout] 123 | const EXEC_DELAY: Duration = Duration::from_nanos(1_000_000_000u64/EXEC_SPEED);
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_ui`
[INFO] [stdout]   --> src/frontend/term.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn render_ui() {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_change`
[INFO] [stdout]   --> src/frontend/term.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn render_change(change: DisplayCmd) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `render_changes`
[INFO] [stdout]   --> src/frontend/term.rs:93:4
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn render_changes(display_cmds: Receiver<DisplayCmd>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `keyboard_init`
[INFO] [stdout]    --> src/frontend/term.rs:108:4
[INFO] [stdout]     |
[INFO] [stdout] 108 | fn keyboard_init(sender: Sender<[u8; 4]>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bell_init`
[INFO] [stdout]    --> src/frontend/term.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn bell_init(beep: Arc<Mutex<bool>>) {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `console_exit`
[INFO] [stdout]    --> src/frontend/term.rs:156:4
[INFO] [stdout]     |
[INFO] [stdout] 156 | fn console_exit() {
[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 1.13s
[INFO] running `Command { std: "docker" "inspect" "4ec2076ccc0eddb89234e44e56dff4944c4bef9b990c4f20b0dd92bf61ca2598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ec2076ccc0eddb89234e44e56dff4944c4bef9b990c4f20b0dd92bf61ca2598", kill_on_drop: false }`
[INFO] [stdout] 4ec2076ccc0eddb89234e44e56dff4944c4bef9b990c4f20b0dd92bf61ca2598
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] ddf5b06113f32f3d5ec2b9dfb533c39bc741f33dc16f42121c575e09bc797cf3
[INFO] running `Command { std: "docker" "start" "-a" "ddf5b06113f32f3d5ec2b9dfb533c39bc741f33dc16f42121c575e09bc797cf3", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `changes`
[INFO] [stdout] 
[INFO] [stderr]    --> src/frontend/term.rs:145:13
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 145 | pub fn init(changes: Receiver<DisplayCmd>, keyboard_sender: Sender<[u8; 4]>, beep: Arc<Mutex<bool>>) {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_changes`
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keyboard_sender`
[INFO] [stderr]    --> src/frontend/term.rs:145:44
[INFO] [stderr]     |
[INFO] [stderr] 145 | pub fn init(changes: Receiver<DisplayCmd>, keyboard_sender: Sender<[u8; 4]>, beep: Arc<Mutex<bool>>) {
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyboard_sender`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `beep`
[INFO] [stderr]    --> src/frontend/term.rs:145:78
[INFO] [stderr]     |
[INFO] [stderr] 145 | pub fn init(changes: Receiver<DisplayCmd>, keyboard_sender: Sender<[u8; 4]>, beep: Arc<Mutex<bool>>) {
[INFO] [stderr]     |                                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_beep`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `EXEC_SPEED`
[INFO] [stderr]    --> src/emu.rs:121:1
[INFO] [stderr]     |
[INFO] [stderr] 121 | const EXEC_SPEED: u64 = 700;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `EXEC_DELAY`
[INFO] [stderr]    --> src/emu.rs:123:1
[INFO] [stderr]     |
[INFO] [stderr] 123 | const EXEC_DELAY: Duration = Duration::from_nanos(1_000_000_000u64/EXEC_SPEED);
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_ui`
[INFO] [stderr]   --> src/frontend/term.rs:63:4
[INFO] [stderr]    |
[INFO] [stderr] 63 | fn render_ui() {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_change`
[INFO] [stderr]   --> src/frontend/term.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn render_change(change: DisplayCmd) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_changes`
[INFO] [stderr]   --> src/frontend/term.rs:93:4
[INFO] [stderr]    |
[INFO] [stderr] 93 | fn render_changes(display_cmds: Receiver<DisplayCmd>) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `keyboard_init`
[INFO] [stderr]    --> src/frontend/term.rs:108:4
[INFO] [stderr]     |
[INFO] [stderr] 108 | fn keyboard_init(sender: Sender<[u8; 4]>) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bell_init`
[INFO] [stderr]    --> src/frontend/term.rs:130:4
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn bell_init(beep: Arc<Mutex<bool>>) {
[INFO] [stderr]     |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `console_exit`
[INFO] [stderr]    --> src/frontend/term.rs:156:4
[INFO] [stderr]     |
[INFO] [stderr] 156 | fn console_exit() {
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `chip8emu` (bin "chip8emu" test) generated 11 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chip8emu-c386a316d6f6cce1)
[INFO] running `Command { std: "docker" "inspect" "ddf5b06113f32f3d5ec2b9dfb533c39bc741f33dc16f42121c575e09bc797cf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddf5b06113f32f3d5ec2b9dfb533c39bc741f33dc16f42121c575e09bc797cf3", kill_on_drop: false }`
[INFO] [stdout] ddf5b06113f32f3d5ec2b9dfb533c39bc741f33dc16f42121c575e09bc797cf3