[INFO] cloning repository https://github.com/shpun817/DMG-01
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shpun817/DMG-01" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshpun817%2FDMG-01", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshpun817%2FDMG-01'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6045b16084e84ff127e00f95a9f8ad7f26e97e2
[INFO] checking shpun817/DMG-01 against try#a7b168ac4977e8e93a43448b44847adaa305d5a9 for pr-150557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshpun817%2FDMG-01" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/shpun817/DMG-01
[INFO] finished tweaking git repo https://github.com/shpun817/DMG-01
[INFO] tweaked toml for git repo https://github.com/shpun817/DMG-01 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/shpun817/DMG-01 on toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/shpun817/DMG-01 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 693b3d0369593d1637c0764d6e03c4488502437a903af712f6cc61bcc7ea6e70
[INFO] running `Command { std: "docker" "start" "-a" "693b3d0369593d1637c0764d6e03c4488502437a903af712f6cc61bcc7ea6e70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "693b3d0369593d1637c0764d6e03c4488502437a903af712f6cc61bcc7ea6e70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "693b3d0369593d1637c0764d6e03c4488502437a903af712f6cc61bcc7ea6e70", kill_on_drop: false }`
[INFO] [stdout] 693b3d0369593d1637c0764d6e03c4488502437a903af712f6cc61bcc7ea6e70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f5ded406ec91e621c69a95f9a4762f136b058f988bd8b151d8bdd776833d399
[INFO] running `Command { std: "docker" "start" "-a" "0f5ded406ec91e621c69a95f9a4762f136b058f988bd8b151d8bdd776833d399", kill_on_drop: false }`
[INFO] [stderr]     Checking DMG-01 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]    --> src/cpu.rs:209:30
[INFO] [stdout]     |
[INFO] [stdout] 209 |     fn write_byte(&mut self, address: u16, byte: u8) {}
[INFO] [stdout]     |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/cpu.rs:209:44
[INFO] [stdout]     |
[INFO] [stdout] 209 |     fn write_byte(&mut self, address: u16, byte: u8) {}
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CPU` is never constructed
[INFO] [stdout]  --> src/cpu.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct CPU {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MemoryBus` is never constructed
[INFO] [stdout]   --> src/cpu.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct MemoryBus {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/cpu.rs:21:8
[INFO] [stdout]     |
[INFO] [stdout]  20 | impl CPU {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout]  21 |     fn step(&mut self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  44 |     fn execute(&mut self, instruction: Instruction) -> u16 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn add(&mut self, value: u8) -> u8 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 146 |     fn jump(&mut self, should_jump: bool) -> u16 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 161 |     fn read_next_byte(&mut self) -> u8 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     fn read_next_word(&mut self) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 169 |     fn push(&mut self, value: u16) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     fn pop(&mut self) -> u16 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 185 |     fn call(&mut self, should_jump: bool) -> u16 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 195 |     fn return_(&mut self, should_jump: bool) -> u16 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_byte` and `write_byte` are never used
[INFO] [stdout]    --> src/cpu.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 204 | impl MemoryBus {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] 205 |     fn read_byte(&self, address: u16) -> u8 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     fn write_byte(&mut self, address: u16, byte: u8) {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Instruction` is never used
[INFO] [stdout]  --> src/instruction.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) enum Instruction {
[INFO] [stdout]   |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ArithmeticTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub(crate) enum ArithmeticTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IncDecTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub(crate) enum IncDecTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PrefixTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub(crate) enum PrefixTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `JumpTest` is never used
[INFO] [stdout]   --> src/instruction.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub(crate) enum JumpTest {
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LoadType` is never used
[INFO] [stdout]   --> src/instruction.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub(crate) enum LoadType {
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LoadByteTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub(crate) enum LoadByteTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LoadByteSource` is never used
[INFO] [stdout]   --> src/instruction.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub(crate) enum LoadByteSource {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `StackTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub(crate) enum StackTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_byte`, `from_byte_prefixed`, and `from_byte_not_prefixed` are never used
[INFO] [stdout]   --> src/instruction.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 71 | impl Instruction {
[INFO] [stdout]    | ---------------- associated functions in this implementation
[INFO] [stdout] 72 |     pub(crate) fn from_byte(byte: u8, is_prefixed: bool) -> Option<Self> {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn from_byte_prefixed(byte: u8) -> Option<Self> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn from_byte_not_prefixed(byte: u8) -> Option<Self> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Registers` is never constructed
[INFO] [stdout]  --> src/register.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) struct Registers {
[INFO] [stdout]   |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]   --> src/register.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Registers {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 13 |     pub(crate) fn get_af(&self) -> u16 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub(crate) fn set_af(&mut self, value: u16) {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub(crate) fn get_bc(&self) -> u16 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub(crate) fn set_bc(&mut self, value: u16) {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub(crate) fn get_de(&self) -> u16 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub(crate) fn set_de(&mut self, value: u16) {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub(crate) fn get_hl(&self) -> u16 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub(crate) fn set_hl(&mut self, value: u16) {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `address`
[INFO] [stdout]    --> src/cpu.rs:209:30
[INFO] [stdout]     |
[INFO] [stdout] 209 |     fn write_byte(&mut self, address: u16, byte: u8) {}
[INFO] [stdout]     |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_address`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `byte`
[INFO] [stdout]    --> src/cpu.rs:209:44
[INFO] [stdout]     |
[INFO] [stdout] 209 |     fn write_byte(&mut self, address: u16, byte: u8) {}
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_byte`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CPU` is never constructed
[INFO] [stdout]  --> src/cpu.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct CPU {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MemoryBus` is never constructed
[INFO] [stdout]   --> src/cpu.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct MemoryBus {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/cpu.rs:21:8
[INFO] [stdout]     |
[INFO] [stdout]  20 | impl CPU {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout]  21 |     fn step(&mut self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  44 |     fn execute(&mut self, instruction: Instruction) -> u16 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 135 |     fn add(&mut self, value: u8) -> u8 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 146 |     fn jump(&mut self, should_jump: bool) -> u16 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 161 |     fn read_next_byte(&mut self) -> u8 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     fn read_next_word(&mut self) -> u16 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 169 |     fn push(&mut self, value: u16) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 176 |     fn pop(&mut self) -> u16 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 185 |     fn call(&mut self, should_jump: bool) -> u16 {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 195 |     fn return_(&mut self, should_jump: bool) -> u16 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `read_byte` and `write_byte` are never used
[INFO] [stdout]    --> src/cpu.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 204 | impl MemoryBus {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] 205 |     fn read_byte(&self, address: u16) -> u8 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     fn write_byte(&mut self, address: u16, byte: u8) {}
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Instruction` is never used
[INFO] [stdout]  --> src/instruction.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) enum Instruction {
[INFO] [stdout]   |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ArithmeticTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub(crate) enum ArithmeticTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `IncDecTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:23:17
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub(crate) enum IncDecTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `PrefixTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:28:17
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub(crate) enum PrefixTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `JumpTest` is never used
[INFO] [stdout]   --> src/instruction.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub(crate) enum JumpTest {
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LoadType` is never used
[INFO] [stdout]   --> src/instruction.rs:40:17
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub(crate) enum LoadType {
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LoadByteTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:44:17
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub(crate) enum LoadByteTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LoadByteSource` is never used
[INFO] [stdout]   --> src/instruction.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub(crate) enum LoadByteSource {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `StackTarget` is never used
[INFO] [stdout]   --> src/instruction.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub(crate) enum StackTarget {
[INFO] [stdout]    |                 ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_byte`, `from_byte_prefixed`, and `from_byte_not_prefixed` are never used
[INFO] [stdout]   --> src/instruction.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 71 | impl Instruction {
[INFO] [stdout]    | ---------------- associated functions in this implementation
[INFO] [stdout] 72 |     pub(crate) fn from_byte(byte: u8, is_prefixed: bool) -> Option<Self> {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn from_byte_prefixed(byte: u8) -> Option<Self> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     fn from_byte_not_prefixed(byte: u8) -> Option<Self> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Registers` is never constructed
[INFO] [stdout]  --> src/register.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) struct Registers {
[INFO] [stdout]   |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]   --> src/register.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Registers {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] 13 |     pub(crate) fn get_af(&self) -> u16 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub(crate) fn set_af(&mut self, value: u16) {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub(crate) fn get_bc(&self) -> u16 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub(crate) fn set_bc(&mut self, value: u16) {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub(crate) fn get_de(&self) -> u16 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub(crate) fn set_de(&mut self, value: u16) {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub(crate) fn get_hl(&self) -> u16 {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub(crate) fn set_hl(&mut self, value: u16) {
[INFO] [stdout]    |                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "0f5ded406ec91e621c69a95f9a4762f136b058f988bd8b151d8bdd776833d399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f5ded406ec91e621c69a95f9a4762f136b058f988bd8b151d8bdd776833d399", kill_on_drop: false }`
[INFO] [stdout] 0f5ded406ec91e621c69a95f9a4762f136b058f988bd8b151d8bdd776833d399
