[INFO] updating cached repository https://github.com/teja635/chip8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cde7ba86cb389c21b13d42b37ccfe4c7f9e3e762
[INFO] testing teja635/chip8 against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteja635%2Fchip8" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/teja635/chip8 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/teja635/chip8
[INFO] finished tweaking git repo https://github.com/teja635/chip8
[INFO] tweaked toml for git repo https://github.com/teja635/chip8 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/teja635/chip8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 291bb5281c68f68bafcbe44e25090f97aa39685d89c188c6504f350af4b01211
[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" "291bb5281c68f68bafcbe44e25090f97aa39685d89c188c6504f350af4b01211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "291bb5281c68f68bafcbe44e25090f97aa39685d89c188c6504f350af4b01211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "291bb5281c68f68bafcbe44e25090f97aa39685d89c188c6504f350af4b01211", kill_on_drop: false }`
[INFO] [stdout] 291bb5281c68f68bafcbe44e25090f97aa39685d89c188c6504f350af4b01211
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2231b16922869886847081dcdfacb231216885ae238e489af04aca4f7e18a763
[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" "2231b16922869886847081dcdfacb231216885ae238e489af04aca4f7e18a763", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling sdl2-sys v0.32.5
[INFO] [stderr]    Compiling ncurses v5.98.0
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling sdl2 v0.32.1
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `timestamp`
[INFO] [stdout]   --> src/lib.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `window_id`
[INFO] [stdout]   --> src/lib.rs:73:32
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                               ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scancode`
[INFO] [stdout]   --> src/lib.rs:73:52
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                   ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymod`
[INFO] [stdout]   --> src/lib.rs:73:62
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                             ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repeat`
[INFO] [stdout]   --> src/lib.rs:73:70
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                                     ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timestamp`
[INFO] [stdout]   --> src/lib.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                  ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `window_id`
[INFO] [stdout]   --> src/lib.rs:76:30
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                             ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scancode`
[INFO] [stdout]   --> src/lib.rs:76:50
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                 ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymod`
[INFO] [stdout]   --> src/lib.rs:76:60
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                           ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repeat`
[INFO] [stdout]   --> src/lib.rs:76:68
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                                   ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_binary`
[INFO] [stdout]  --> src/assembler.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn assemble(program_file: &str, output_binary: &str) {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_binary`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cpu.rs:113:32
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[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/cpu.rs:113:61
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[INFO] [stdout]     |                                                                ----^^^^
[INFO] [stdout]     |                                                                |
[INFO] [stdout]     |                                                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_gfx_mem`
[INFO] [stdout]   --> src/display.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn dump_gfx_mem(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gfx_memory`
[INFO] [stdout]   --> src/display.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn gfx_memory(&self) -> [u64; 32] {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st`
[INFO] [stdout]   --> src/cpu.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     st: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_memory`
[INFO] [stdout]   --> src/cpu.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn dump_memory(&self, start_idx: usize, end_idx: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_registers`
[INFO] [stdout]    --> src/cpu.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn dump_registers(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `video_ctx`
[INFO] [stdout]   --> src/lib.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     video_ctx: sdl2::VideoSubsystem, 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timer`
[INFO] [stdout]   --> src/lib.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     timer: sdl2::TimerSubsystem, 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/lib.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 self.canvas.fill_rect(Rect::new(20*x as i32, 20*y as i32, 20,  20));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `V` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:12:2
[INFO] [stdout]    |
[INFO] [stdout] 12 |     V: [u8; 16],
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `I` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:13:2
[INFO] [stdout]    |
[INFO] [stdout] 13 |     I: u16,
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/cpu.rs:25:2
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fd.read(&mut memory[0x200..]);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.44s
[INFO] running `Command { std: "docker" "inspect" "2231b16922869886847081dcdfacb231216885ae238e489af04aca4f7e18a763", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2231b16922869886847081dcdfacb231216885ae238e489af04aca4f7e18a763", kill_on_drop: false }`
[INFO] [stdout] 2231b16922869886847081dcdfacb231216885ae238e489af04aca4f7e18a763
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74d2847f27af40c6f9f93bf03be010a217174a40bb9942595417ab9d7ae8ee9e
[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" "74d2847f27af40c6f9f93bf03be010a217174a40bb9942595417ab9d7ae8ee9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `timestamp`
[INFO] [stdout]   --> src/lib.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `window_id`
[INFO] [stdout]   --> src/lib.rs:73:32
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                               ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scancode`
[INFO] [stdout]   --> src/lib.rs:73:52
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                   ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymod`
[INFO] [stdout]   --> src/lib.rs:73:62
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                             ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repeat`
[INFO] [stdout]   --> src/lib.rs:73:70
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                                     ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timestamp`
[INFO] [stdout]   --> src/lib.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                  ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `window_id`
[INFO] [stdout]   --> src/lib.rs:76:30
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                             ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scancode`
[INFO] [stdout]   --> src/lib.rs:76:50
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                 ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymod`
[INFO] [stdout]   --> src/lib.rs:76:60
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                           ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repeat`
[INFO] [stdout]   --> src/lib.rs:76:68
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                                   ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_binary`
[INFO] [stdout]  --> src/assembler.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn assemble(program_file: &str, output_binary: &str) {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_binary`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cpu.rs:113:32
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[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/cpu.rs:113:61
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[INFO] [stdout]     |                                                                ----^^^^
[INFO] [stdout]     |                                                                |
[INFO] [stdout]     |                                                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_gfx_mem`
[INFO] [stdout]   --> src/display.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn dump_gfx_mem(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gfx_memory`
[INFO] [stdout]   --> src/display.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn gfx_memory(&self) -> [u64; 32] {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st`
[INFO] [stdout]   --> src/cpu.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     st: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_memory`
[INFO] [stdout]   --> src/cpu.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn dump_memory(&self, start_idx: usize, end_idx: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_registers`
[INFO] [stdout]    --> src/cpu.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn dump_registers(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `video_ctx`
[INFO] [stdout]   --> src/lib.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     video_ctx: sdl2::VideoSubsystem, 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timer`
[INFO] [stdout]   --> src/lib.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     timer: sdl2::TimerSubsystem, 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/lib.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 self.canvas.fill_rect(Rect::new(20*x as i32, 20*y as i32, 20,  20));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `V` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:12:2
[INFO] [stdout]    |
[INFO] [stdout] 12 |     V: [u8; 16],
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `I` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:13:2
[INFO] [stdout]    |
[INFO] [stdout] 13 |     I: u16,
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/cpu.rs:25:2
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fd.read(&mut memory[0x200..]);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timestamp`
[INFO] [stdout]   --> src/lib.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                    ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `window_id`
[INFO] [stdout]   --> src/lib.rs:73:32
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                               ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scancode`
[INFO] [stdout]   --> src/lib.rs:73:52
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                   ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymod`
[INFO] [stdout]   --> src/lib.rs:73:62
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                             ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repeat`
[INFO] [stdout]   --> src/lib.rs:73:70
[INFO] [stdout]    |
[INFO] [stdout] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                                     ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timestamp`
[INFO] [stdout]   --> src/lib.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                  ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `window_id`
[INFO] [stdout]   --> src/lib.rs:76:30
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                             ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scancode`
[INFO] [stdout]   --> src/lib.rs:76:50
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                 ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymod`
[INFO] [stdout]   --> src/lib.rs:76:60
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                           ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repeat`
[INFO] [stdout]   --> src/lib.rs:76:68
[INFO] [stdout]    |
[INFO] [stdout] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stdout]    |                                                                                   ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_binary`
[INFO] [stdout]  --> src/assembler.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn assemble(program_file: &str, output_binary: &str) {
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_binary`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cpu.rs:113:32
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[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/cpu.rs:113:61
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[INFO] [stdout]     |                                                                ----^^^^
[INFO] [stdout]     |                                                                |
[INFO] [stdout]     |                                                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_gfx_mem`
[INFO] [stdout]   --> src/display.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn dump_gfx_mem(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gfx_memory`
[INFO] [stdout]   --> src/display.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn gfx_memory(&self) -> [u64; 32] {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `st`
[INFO] [stdout]   --> src/cpu.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     st: u8,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_memory`
[INFO] [stdout]   --> src/cpu.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn dump_memory(&self, start_idx: usize, end_idx: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dump_registers`
[INFO] [stdout]    --> src/cpu.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn dump_registers(&self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `video_ctx`
[INFO] [stdout]   --> src/lib.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     video_ctx: sdl2::VideoSubsystem, 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `timer`
[INFO] [stdout]   --> src/lib.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     timer: sdl2::TimerSubsystem, 
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/lib.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 self.canvas.fill_rect(Rect::new(20*x as i32, 20*y as i32, 20,  20));
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `V` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:12:2
[INFO] [stdout]    |
[INFO] [stdout] 12 |     V: [u8; 16],
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `I` should have a snake case name
[INFO] [stdout]   --> src/cpu.rs:13:2
[INFO] [stdout]    |
[INFO] [stdout] 13 |     I: u16,
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/cpu.rs:25:2
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fd.read(&mut memory[0x200..]);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "74d2847f27af40c6f9f93bf03be010a217174a40bb9942595417ab9d7ae8ee9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74d2847f27af40c6f9f93bf03be010a217174a40bb9942595417ab9d7ae8ee9e", kill_on_drop: false }`
[INFO] [stdout] 74d2847f27af40c6f9f93bf03be010a217174a40bb9942595417ab9d7ae8ee9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5f3bd4bf9f1e07cd577d269ed8b21f299fd1d8ef2ddb3898f411d70a86a759b7
[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" "5f3bd4bf9f1e07cd577d269ed8b21f299fd1d8ef2ddb3898f411d70a86a759b7", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `timestamp`
[INFO] [stderr]   --> src/lib.rs:73:21
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                    ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `window_id`
[INFO] [stderr]   --> src/lib.rs:73:32
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                               ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scancode`
[INFO] [stderr]   --> src/lib.rs:73:52
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                   ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keymod`
[INFO] [stderr]   --> src/lib.rs:73:62
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                             ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `repeat`
[INFO] [stderr]   --> src/lib.rs:73:70
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                                     ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timestamp`
[INFO] [stderr]   --> src/lib.rs:76:19
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                  ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `window_id`
[INFO] [stderr]   --> src/lib.rs:76:30
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                             ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scancode`
[INFO] [stderr]   --> src/lib.rs:76:50
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                 ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keymod`
[INFO] [stderr]   --> src/lib.rs:76:60
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                           ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `repeat`
[INFO] [stderr]   --> src/lib.rs:76:68
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                                   ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output_binary`
[INFO] [stderr]  --> src/assembler.rs:5:37
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn assemble(program_file: &str, output_binary: &str) {
[INFO] [stderr]   |                                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_binary`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/cpu.rs:113:32
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/cpu.rs:113:61
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[INFO] [stderr]     |                                                                ----^^^^
[INFO] [stderr]     |                                                                |
[INFO] [stderr]     |                                                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dump_gfx_mem`
[INFO] [stderr]   --> src/display.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn dump_gfx_mem(&self) {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `gfx_memory`
[INFO] [stderr]   --> src/display.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn gfx_memory(&self) -> [u64; 32] {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `st`
[INFO] [stderr]   --> src/cpu.rs:19:2
[INFO] [stderr]    |
[INFO] [stderr] 19 |     st: u8,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dump_memory`
[INFO] [stderr]   --> src/cpu.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn dump_memory(&self, start_idx: usize, end_idx: usize) {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dump_registers`
[INFO] [stderr]    --> src/cpu.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     pub fn dump_registers(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `video_ctx`
[INFO] [stderr]   --> src/lib.rs:16:2
[INFO] [stderr]    |
[INFO] [stderr] 16 |     video_ctx: sdl2::VideoSubsystem, 
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `timer`
[INFO] [stderr]   --> src/lib.rs:17:2
[INFO] [stderr]    |
[INFO] [stderr] 17 |     timer: sdl2::TimerSubsystem, 
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lib.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 self.canvas.fill_rect(Rect::new(20*x as i32, 20*y as i32, 20,  20));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:12:2
[INFO] [stderr]    |
[INFO] [stderr] 12 |     V: [u8; 16],
[INFO] [stderr]    |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `I` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:13:2
[INFO] [stderr]    |
[INFO] [stderr] 13 |     I: u16,
[INFO] [stderr]    |     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cpu.rs:25:2
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fd.read(&mut memory[0x200..]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 24 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timestamp`
[INFO] [stderr]   --> src/lib.rs:73:21
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                    ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `window_id`
[INFO] [stderr]   --> src/lib.rs:73:32
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                               ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scancode`
[INFO] [stderr]   --> src/lib.rs:73:52
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                   ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keymod`
[INFO] [stderr]   --> src/lib.rs:73:62
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                             ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `repeat`
[INFO] [stderr]   --> src/lib.rs:73:70
[INFO] [stderr]    |
[INFO] [stderr] 73 |                     Event::KeyDown{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                                     ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timestamp`
[INFO] [stderr]   --> src/lib.rs:76:19
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                  ^^^^^^^^^ help: try ignoring the field: `timestamp: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `window_id`
[INFO] [stderr]   --> src/lib.rs:76:30
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                             ^^^^^^^^^ help: try ignoring the field: `window_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scancode`
[INFO] [stderr]   --> src/lib.rs:76:50
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                 ^^^^^^^^ help: try ignoring the field: `scancode: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keymod`
[INFO] [stderr]   --> src/lib.rs:76:60
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                           ^^^^^^ help: try ignoring the field: `keymod: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `repeat`
[INFO] [stderr]   --> src/lib.rs:76:68
[INFO] [stderr]    |
[INFO] [stderr] 76 |                     Event::KeyUp{timestamp, window_id, keycode, scancode, keymod, repeat} => {
[INFO] [stderr]    |                                                                                   ^^^^^^ help: try ignoring the field: `repeat: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output_binary`
[INFO] [stderr]  --> src/assembler.rs:5:37
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn assemble(program_file: &str, output_binary: &str) {
[INFO] [stderr]   |                                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_binary`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/cpu.rs:113:32
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/cpu.rs:113:61
[INFO] [stderr]     |
[INFO] [stderr] 113 |     pub fn clock_cycle(&mut self, mut disp: &mut display::GFX, mut keys: &mut keypad::Keypad) -> bool{
[INFO] [stderr]     |                                                                ----^^^^
[INFO] [stderr]     |                                                                |
[INFO] [stderr]     |                                                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dump_gfx_mem`
[INFO] [stderr]   --> src/display.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn dump_gfx_mem(&self) {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `gfx_memory`
[INFO] [stderr]   --> src/display.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn gfx_memory(&self) -> [u64; 32] {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `st`
[INFO] [stderr]   --> src/cpu.rs:19:2
[INFO] [stderr]    |
[INFO] [stderr] 19 |     st: u8,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dump_memory`
[INFO] [stderr]   --> src/cpu.rs:79:9
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn dump_memory(&self, start_idx: usize, end_idx: usize) {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dump_registers`
[INFO] [stderr]    --> src/cpu.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     pub fn dump_registers(&self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `video_ctx`
[INFO] [stderr]   --> src/lib.rs:16:2
[INFO] [stderr]    |
[INFO] [stderr] 16 |     video_ctx: sdl2::VideoSubsystem, 
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `timer`
[INFO] [stderr]   --> src/lib.rs:17:2
[INFO] [stderr]    |
[INFO] [stderr] 17 |     timer: sdl2::TimerSubsystem, 
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lib.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 self.canvas.fill_rect(Rect::new(20*x as i32, 20*y as i32, 20,  20));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:12:2
[INFO] [stderr]    |
[INFO] [stderr] 12 |     V: [u8; 16],
[INFO] [stderr]    |     ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `I` should have a snake case name
[INFO] [stderr]   --> src/cpu.rs:13:2
[INFO] [stderr]    |
[INFO] [stderr] 13 |     I: u16,
[INFO] [stderr]    |     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cpu.rs:25:2
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fd.read(&mut memory[0x200..]);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 24 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.17s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chip8-23ef74a8db6a4ef1
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chip8-237fbb327b005aee
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests chip8
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5f3bd4bf9f1e07cd577d269ed8b21f299fd1d8ef2ddb3898f411d70a86a759b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f3bd4bf9f1e07cd577d269ed8b21f299fd1d8ef2ddb3898f411d70a86a759b7", kill_on_drop: false }`
[INFO] [stdout] 5f3bd4bf9f1e07cd577d269ed8b21f299fd1d8ef2ddb3898f411d70a86a759b7