[INFO] cloning repository https://github.com/jmg-duarte/c8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmg-duarte/c8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmg-duarte%2Fc8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmg-duarte%2Fc8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75c183636d291a3fbd35924ac516618883dba5f5
[INFO] checking jmg-duarte/c8 against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmg-duarte%2Fc8" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmg-duarte/c8 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jmg-duarte/c8
[INFO] finished tweaking git repo https://github.com/jmg-duarte/c8
[INFO] tweaked toml for git repo https://github.com/jmg-duarte/c8 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jmg-duarte/c8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc98aed09f086ccd0bfadcb243f2713d3ced84aeb5cbb8cefe3eb2a71d4a1180
[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" "cc98aed09f086ccd0bfadcb243f2713d3ced84aeb5cbb8cefe3eb2a71d4a1180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc98aed09f086ccd0bfadcb243f2713d3ced84aeb5cbb8cefe3eb2a71d4a1180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc98aed09f086ccd0bfadcb243f2713d3ced84aeb5cbb8cefe3eb2a71d4a1180", kill_on_drop: false }`
[INFO] [stdout] cc98aed09f086ccd0bfadcb243f2713d3ced84aeb5cbb8cefe3eb2a71d4a1180
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8200b34492294798df3f64d5c918e2d3229353b6136d881165302bdc990cbe07
[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" "8200b34492294798df3f64d5c918e2d3229353b6136d881165302bdc990cbe07", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking chip-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/chip8/cpu.rs:217:13
[INFO] [stdout]     |
[INFO] [stdout] 217 |         for addr in start..end {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:214:24
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn draw(&mut self, x_idx: u8, y_idx: u8, n: u8) {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:214:35
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn draw(&mut self, x_idx: u8, y_idx: u8, n: u8) {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_y_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:223:36
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn skip_key_pressed(&mut self, x_idx: u8) {
[INFO] [stdout]     |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:228:40
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn skip_key_not_pressed(&mut self, x_idx: u8) {
[INFO] [stdout]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:238:33
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn wait_keypress(&mut self, x_idx: u8) {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:258:31
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn set_i_digit(&mut self, x_idx: u8) {
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:263:29
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn store_bcd(&mut self, x_idx: u8) {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `N_VREGISTERS`
[INFO] [stdout]  --> src/chip8/cpu.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | const N_VREGISTERS: usize = 16;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `STACK_SIZE`
[INFO] [stdout]  --> src/chip8/cpu.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | const STACK_SIZE: usize = 16;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `VF`
[INFO] [stdout]  --> src/chip8/cpu.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | const VF: usize = 0xF;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `V0`
[INFO] [stdout]  --> src/chip8/cpu.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | const V0: usize = 0x0;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CPU`
[INFO] [stdout]  --> src/chip8/cpu.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct CPU {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/chip8/cpu.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ret_subroutine`
[INFO] [stdout]   --> src/chip8/cpu.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn ret_subroutine(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `jmp_addr`
[INFO] [stdout]   --> src/chip8/cpu.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn jmp_addr(&mut self, addr: u16) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call_subroutine`
[INFO] [stdout]   --> src/chip8/cpu.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn call_subroutine(&mut self, addr: u16) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_eq_value`
[INFO] [stdout]   --> src/chip8/cpu.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn skip_eq_value(&mut self, x_idx: u8, value: u8) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_neq_value`
[INFO] [stdout]   --> src/chip8/cpu.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn skip_neq_value(&mut self, x_idx: u8, value: u8) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_eq_xy`
[INFO] [stdout]   --> src/chip8/cpu.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn skip_eq_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_x_value`
[INFO] [stdout]   --> src/chip8/cpu.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn set_x_value(&mut self, x_idx: u8, value: u8) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_x_value`
[INFO] [stdout]   --> src/chip8/cpu.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn add_x_value(&mut self, x_idx: u8, value: u8) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `store_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn store_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `or_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:109:8
[INFO] [stdout]     |
[INFO] [stdout] 109 |     fn or_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `and_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn and_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `xor_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn xor_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:130:8
[INFO] [stdout]     |
[INFO] [stdout] 130 |     fn add_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sub_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn sub_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shr_x`
[INFO] [stdout]    --> src/chip8/cpu.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn shr_x(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `subn_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn subn_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shl_x`
[INFO] [stdout]    --> src/chip8/cpu.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn shl_x(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_neq_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:187:8
[INFO] [stdout]     |
[INFO] [stdout] 187 |     fn skip_neq_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_i`
[INFO] [stdout]    --> src/chip8/cpu.rs:194:8
[INFO] [stdout]     |
[INFO] [stdout] 194 |     fn set_i(&mut self, addr: u16) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `jmp_addr_offset`
[INFO] [stdout]    --> src/chip8/cpu.rs:201:8
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn jmp_addr_offset(&mut self, addr: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rnd_and`
[INFO] [stdout]    --> src/chip8/cpu.rs:208:8
[INFO] [stdout]     |
[INFO] [stdout] 208 |     fn rnd_and(&mut self, x_idx: u8, value: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `draw`
[INFO] [stdout]    --> src/chip8/cpu.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn draw(&mut self, x_idx: u8, y_idx: u8, n: u8) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_key_pressed`
[INFO] [stdout]    --> src/chip8/cpu.rs:223:8
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn skip_key_pressed(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_key_not_pressed`
[INFO] [stdout]    --> src/chip8/cpu.rs:228:8
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn skip_key_not_pressed(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_delay_timer`
[INFO] [stdout]    --> src/chip8/cpu.rs:233:8
[INFO] [stdout]     |
[INFO] [stdout] 233 |     fn read_delay_timer(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `wait_keypress`
[INFO] [stdout]    --> src/chip8/cpu.rs:238:8
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn wait_keypress(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_delay_timer`
[INFO] [stdout]    --> src/chip8/cpu.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 |     fn set_delay_timer(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_sound_timer`
[INFO] [stdout]    --> src/chip8/cpu.rs:248:8
[INFO] [stdout]     |
[INFO] [stdout] 248 |     fn set_sound_timer(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_i`
[INFO] [stdout]    --> src/chip8/cpu.rs:253:8
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn add_i(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_i_digit`
[INFO] [stdout]    --> src/chip8/cpu.rs:258:8
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn set_i_digit(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `store_bcd`
[INFO] [stdout]    --> src/chip8/cpu.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn store_bcd(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `store_registers`
[INFO] [stdout]    --> src/chip8/cpu.rs:270:8
[INFO] [stdout]     |
[INFO] [stdout] 270 |     fn store_registers(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_registers`
[INFO] [stdout]    --> src/chip8/cpu.rs:279:8
[INFO] [stdout]     |
[INFO] [stdout] 279 |     fn read_registers(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cycle`
[INFO] [stdout]    --> src/chip8/cpu.rs:285:8
[INFO] [stdout]     |
[INFO] [stdout] 285 |     fn cycle(&mut self, opcode: u16) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `RAM`
[INFO] [stdout]  --> src/chip8/ram.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct RAM {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/chip8/ram.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]   --> src/chip8/ram.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn read(&self, addr: usize) -> u8 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/chip8/ram.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn write(&mut self, addr: usize, value: u8) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 52 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/chip8/cpu.rs:217:13
[INFO] [stdout]     |
[INFO] [stdout] 217 |         for addr in start..end {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:214:24
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn draw(&mut self, x_idx: u8, y_idx: u8, n: u8) {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:214:35
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn draw(&mut self, x_idx: u8, y_idx: u8, n: u8) {
[INFO] [stdout]     |                                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_y_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:223:36
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn skip_key_pressed(&mut self, x_idx: u8) {
[INFO] [stdout]     |                                    ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:228:40
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn skip_key_not_pressed(&mut self, x_idx: u8) {
[INFO] [stdout]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:238:33
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn wait_keypress(&mut self, x_idx: u8) {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:258:31
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn set_i_digit(&mut self, x_idx: u8) {
[INFO] [stdout]     |                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_idx`
[INFO] [stdout]    --> src/chip8/cpu.rs:263:29
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn store_bcd(&mut self, x_idx: u8) {
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_idx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `V0`
[INFO] [stdout]  --> src/chip8/cpu.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | const V0: usize = 0x0;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `i_reg`
[INFO] [stdout]   --> src/chip8/cpu.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     i_reg: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `delay_timer`
[INFO] [stdout]   --> src/chip8/cpu.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     delay_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sound_timer`
[INFO] [stdout]   --> src/chip8/cpu.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     sound_timer: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rng`
[INFO] [stdout]   --> src/chip8/cpu.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     rng: ThreadRng,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ram`
[INFO] [stdout]   --> src/chip8/cpu.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     ram: ram::RAM,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sub_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn sub_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shr_x`
[INFO] [stdout]    --> src/chip8/cpu.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 157 |     fn shr_x(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `subn_xy`
[INFO] [stdout]    --> src/chip8/cpu.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn subn_xy(&mut self, x_idx: u8, y_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shl_x`
[INFO] [stdout]    --> src/chip8/cpu.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn shl_x(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_i`
[INFO] [stdout]    --> src/chip8/cpu.rs:194:8
[INFO] [stdout]     |
[INFO] [stdout] 194 |     fn set_i(&mut self, addr: u16) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `jmp_addr_offset`
[INFO] [stdout]    --> src/chip8/cpu.rs:201:8
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn jmp_addr_offset(&mut self, addr: u16) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rnd_and`
[INFO] [stdout]    --> src/chip8/cpu.rs:208:8
[INFO] [stdout]     |
[INFO] [stdout] 208 |     fn rnd_and(&mut self, x_idx: u8, value: u8) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `draw`
[INFO] [stdout]    --> src/chip8/cpu.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn draw(&mut self, x_idx: u8, y_idx: u8, n: u8) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_key_pressed`
[INFO] [stdout]    --> src/chip8/cpu.rs:223:8
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn skip_key_pressed(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `skip_key_not_pressed`
[INFO] [stdout]    --> src/chip8/cpu.rs:228:8
[INFO] [stdout]     |
[INFO] [stdout] 228 |     fn skip_key_not_pressed(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_delay_timer`
[INFO] [stdout]    --> src/chip8/cpu.rs:233:8
[INFO] [stdout]     |
[INFO] [stdout] 233 |     fn read_delay_timer(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `wait_keypress`
[INFO] [stdout]    --> src/chip8/cpu.rs:238:8
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn wait_keypress(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_delay_timer`
[INFO] [stdout]    --> src/chip8/cpu.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 243 |     fn set_delay_timer(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_sound_timer`
[INFO] [stdout]    --> src/chip8/cpu.rs:248:8
[INFO] [stdout]     |
[INFO] [stdout] 248 |     fn set_sound_timer(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_i`
[INFO] [stdout]    --> src/chip8/cpu.rs:253:8
[INFO] [stdout]     |
[INFO] [stdout] 253 |     fn add_i(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_i_digit`
[INFO] [stdout]    --> src/chip8/cpu.rs:258:8
[INFO] [stdout]     |
[INFO] [stdout] 258 |     fn set_i_digit(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `store_bcd`
[INFO] [stdout]    --> src/chip8/cpu.rs:263:8
[INFO] [stdout]     |
[INFO] [stdout] 263 |     fn store_bcd(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `store_registers`
[INFO] [stdout]    --> src/chip8/cpu.rs:270:8
[INFO] [stdout]     |
[INFO] [stdout] 270 |     fn store_registers(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_registers`
[INFO] [stdout]    --> src/chip8/cpu.rs:279:8
[INFO] [stdout]     |
[INFO] [stdout] 279 |     fn read_registers(&mut self, x_idx: u8) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `cycle`
[INFO] [stdout]    --> src/chip8/cpu.rs:285:8
[INFO] [stdout]     |
[INFO] [stdout] 285 |     fn cycle(&mut self, opcode: u16) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `memory`
[INFO] [stdout]  --> src/chip8/ram.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     memory: [u8; 4096],
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]   --> src/chip8/ram.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn read(&self, addr: usize) -> u8 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write`
[INFO] [stdout]   --> src/chip8/ram.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn write(&mut self, addr: usize, value: u8) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.58s
[INFO] running `Command { std: "docker" "inspect" "8200b34492294798df3f64d5c918e2d3229353b6136d881165302bdc990cbe07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8200b34492294798df3f64d5c918e2d3229353b6136d881165302bdc990cbe07", kill_on_drop: false }`
[INFO] [stdout] 8200b34492294798df3f64d5c918e2d3229353b6136d881165302bdc990cbe07