[INFO] updating cached repository sifton/gbers
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sifton/gbers
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sifton/gbers" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/sifton/gbers"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/sifton/gbers'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sifton/gbers" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/sifton/gbers"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/sifton/gbers'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3a94b798299f625a7e94cb8cae3cb2f114735d7b
[INFO] sha for GitHub repo sifton/gbers: 3a94b798299f625a7e94cb8cae3cb2f114735d7b
[INFO] validating manifest of sifton/gbers on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sifton/gbers on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sifton/gbers
[INFO] finished frobbing sifton/gbers
[INFO] frobbed toml for sifton/gbers written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/sifton/gbers/Cargo.toml
[INFO] started frobbing sifton/gbers
[INFO] finished frobbing sifton/gbers
[INFO] frobbed toml for sifton/gbers written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/sifton/gbers/Cargo.toml
[INFO] crate sifton/gbers already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking sifton/gbers against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-0/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/sifton/gbers:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 955cda1d07f269af8241d0e2062d56f1304949f5f010ef2f26fb084d6bb9b5cd
[INFO] running `"docker" "start" "-a" "955cda1d07f269af8241d0e2062d56f1304949f5f010ef2f26fb084d6bb9b5cd"`
[INFO] [stderr]     Checking byte-slice-cast v0.1.0
[INFO] [stderr]     Checking gbers v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::marker::PhantomData`
[INFO] [stderr]   --> src/hw/cart.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::marker::PhantomData;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TryInto`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 | use std::convert::{Into, TryFrom, TryInto};
[INFO] [stderr]    |                                   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::cart`
[INFO] [stderr]   --> src/hw/cpu/mod.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use super::cart;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::marker::PhantomData`
[INFO] [stderr]   --> src/hw/cart.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use std::marker::PhantomData;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TryInto`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 | use std::convert::{Into, TryFrom, TryInto};
[INFO] [stderr]    |                                   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::cart`
[INFO] [stderr]   --> src/hw/cpu/mod.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use super::cart;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/hw/cart.rs:190:12
[INFO] [stderr]     |
[INFO] [stderr] 190 |         Ok(x) => bytes,
[INFO] [stderr]     |            ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `raw`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |   pub fn decode(raw: &[u8]) -> Result<Instr> {
[INFO] [stderr]    |                 ^^^ help: consider prefixing with an underscore: `_raw`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dec`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:157:13
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn from(dec: Decoder<Start>) -> Decoder<Prefix> {
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_dec`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/hw/cart.rs:190:12
[INFO] [stderr]     |
[INFO] [stderr] 190 |         Ok(x) => bytes,
[INFO] [stderr]     |            ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `raw`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |   pub fn decode(raw: &[u8]) -> Result<Instr> {
[INFO] [stderr]    |                 ^^^ help: consider prefixing with an underscore: `_raw`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dec`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:157:13
[INFO] [stderr]     |
[INFO] [stderr] 157 |     fn from(dec: Decoder<Start>) -> Decoder<Prefix> {
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_dec`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `KILOBYTE_BYTES`
[INFO] [stderr]    --> src/hw/cart.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | const KILOBYTE_BYTES: usize = 1024;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_ENTRY`
[INFO] [stderr]    --> src/hw/cart.rs:122:3
[INFO] [stderr]     |
[INFO] [stderr] 122 |   pub const META_ENTRY: Region<[u8; 0x4]>  = Region(0x100, 0x104, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_LOGO`
[INFO] [stderr]    --> src/hw/cart.rs:123:3
[INFO] [stderr]     |
[INFO] [stderr] 123 |   pub const META_LOGO: Region<[u8; 0x30]>   = Region(0x104, 0x134, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_MANUFACTURER`
[INFO] [stderr]    --> src/hw/cart.rs:125:3
[INFO] [stderr]     |
[INFO] [stderr] 125 |   pub const META_MANUFACTURER: Region<u32>  = Region(0x13F, 0x143, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_LICENSEE`
[INFO] [stderr]    --> src/hw/cart.rs:127:3
[INFO] [stderr]     |
[INFO] [stderr] 127 |   pub const META_LICENSEE: Region<u16>      = Region(0x144, 0x146, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_DEST`
[INFO] [stderr]    --> src/hw/cart.rs:132:3
[INFO] [stderr]     |
[INFO] [stderr] 132 |   pub const META_DEST: Region<u8>          = Region(0x14A, 0x14B, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_LICENSEE_OLD`
[INFO] [stderr]    --> src/hw/cart.rs:133:3
[INFO] [stderr]     |
[INFO] [stderr] 133 |   pub const META_LICENSEE_OLD: Region<u8>  = Region(0x14B, 0x14C, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_VERSION`
[INFO] [stderr]    --> src/hw/cart.rs:134:3
[INFO] [stderr]     |
[INFO] [stderr] 134 |   pub const META_VERSION: Region<u8>       = Region(0x14C, 0x14D, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_CHECKSUM_ALL`
[INFO] [stderr]    --> src/hw/cart.rs:136:3
[INFO] [stderr]     |
[INFO] [stderr] 136 |   pub const META_CHECKSUM_ALL: Region<u16> = Region(0x14E, 0x150, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EXEC_BOOT`
[INFO] [stderr]    --> src/hw/cart.rs:140:3
[INFO] [stderr]     |
[INFO] [stderr] 140 |   pub const EXEC_BOOT: Region<[u8; 256]>   = Region(0x0, 0x256, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `has_component`
[INFO] [stderr]    --> src/hw/cart.rs:206:3
[INFO] [stderr]     |
[INFO] [stderr] 206 |   pub fn has_component(&self, cmp: Component) -> bool {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bytes`
[INFO] [stderr]    --> src/hw/cart.rs:260:3
[INFO] [stderr]     |
[INFO] [stderr] 260 |   fn bytes(&self) -> &'a [u8] {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size_bytes`
[INFO] [stderr]    --> src/hw/cart.rs:277:3
[INFO] [stderr]     |
[INFO] [stderr] 277 |   pub fn size_bytes(self) -> usize {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size_bytes`
[INFO] [stderr]    --> src/hw/cart.rs:320:3
[INFO] [stderr]     |
[INFO] [stderr] 320 |   pub fn size_bytes(self) -> usize {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CYCLE_INCREMENT`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const CYCLE_INCREMENT: usize = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Clock`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Clock {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Frequency`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub enum Frequency {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:33:3
[INFO] [stderr]    |
[INFO] [stderr] 33 |   pub fn new(freq: Frequency) -> Clock {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_start_time`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:37:3
[INFO] [stderr]    |
[INFO] [stderr] 37 |   pub fn new_start_time(time: usize, freq: Frequency) -> Clock {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `incr`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:44:3
[INFO] [stderr]    |
[INFO] [stderr] 44 |   pub fn incr(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `incr_n`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn incr_n(&mut self, n: usize) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `time`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn time(&self) -> usize {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Immediate`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | enum Immediate {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Opcode`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | enum Opcode {
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Instr`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:54:1
[INFO] [stderr]    |
[INFO] [stderr] 54 | enum Instr {
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Result`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | type Result<T> = result::Result<T, decode::DecodeErr>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `decode`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |   pub fn decode(raw: &[u8]) -> Result<Instr> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Result`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:109:3
[INFO] [stderr]     |
[INFO] [stderr] 109 |   pub type Result<T> = result::Result<T, DecodeErr>;
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `bytes`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     bytes: [u8; 4],
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `state`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:116:5
[INFO] [stderr]     |
[INFO] [stderr] 116 |     state: S,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DblPrefix`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:131:3
[INFO] [stderr]     |
[INFO] [stderr] 131 |   struct DblPrefix {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Opcode`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:135:3
[INFO] [stderr]     |
[INFO] [stderr] 135 |   struct Opcode {
[INFO] [stderr]     |   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Displace`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:139:3
[INFO] [stderr]     |
[INFO] [stderr] 139 |   struct Displace {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Immed`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:143:3
[INFO] [stderr]     |
[INFO] [stderr] 143 |   struct Immed {
[INFO] [stderr]     |   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub fn new(bytes: [u8; 4]) -> Decoder<Start> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Reg`
[INFO] [stderr]   --> src/hw/cpu/register.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct Reg {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CompositeReg`
[INFO] [stderr]   --> src/hw/cpu/register.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub struct CompositeReg {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Zero`
[INFO] [stderr]   --> src/hw/cpu/register.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |   Zero = 1 << 7,
[INFO] [stderr]    |   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AddSub`
[INFO] [stderr]   --> src/hw/cpu/register.rs:39:3
[INFO] [stderr]    |
[INFO] [stderr] 39 |   AddSub = 1 << 6,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HalfCarry`
[INFO] [stderr]   --> src/hw/cpu/register.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   HalfCarry = 1 << 5,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Carry`
[INFO] [stderr]   --> src/hw/cpu/register.rs:41:3
[INFO] [stderr]    |
[INFO] [stderr] 41 |   Carry = 1 << 4
[INFO] [stderr]    |   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upper`
[INFO] [stderr]   --> src/hw/cpu/register.rs:57:3
[INFO] [stderr]    |
[INFO] [stderr] 57 |   pub fn upper(&self) -> &Reg {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upper_mut`
[INFO] [stderr]   --> src/hw/cpu/register.rs:61:3
[INFO] [stderr]    |
[INFO] [stderr] 61 |   pub fn upper_mut(&mut self) -> &mut Reg {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lower`
[INFO] [stderr]   --> src/hw/cpu/register.rs:65:3
[INFO] [stderr]    |
[INFO] [stderr] 65 |   pub fn lower(&self) -> &Reg {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lower_mut`
[INFO] [stderr]   --> src/hw/cpu/register.rs:69:3
[INFO] [stderr]    |
[INFO] [stderr] 69 |   pub fn lower_mut(&mut self) -> &mut Reg {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/hw/cpu/register.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |   pub fn new(initial: u16) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/hw/cpu/register.rs:86:3
[INFO] [stderr]    |
[INFO] [stderr] 86 |   pub fn new(initial: u8) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Processor`
[INFO] [stderr]   --> src/hw/cpu/mod.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct Processor {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/hw/cpu/mod.rs:37:3
[INFO] [stderr]    |
[INFO] [stderr] 37 |   pub fn new() -> Processor {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `start`
[INFO] [stderr]   --> src/hw/cpu/mod.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn start(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MMU`
[INFO] [stderr]   --> src/hw/mmu.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub struct MMU {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/main.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | #![feature(try_from)]
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `KILOBYTE_BYTES`
[INFO] [stderr]    --> src/hw/cart.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | const KILOBYTE_BYTES: usize = 1024;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_ENTRY`
[INFO] [stderr]    --> src/hw/cart.rs:122:3
[INFO] [stderr]     |
[INFO] [stderr] 122 |   pub const META_ENTRY: Region<[u8; 0x4]>  = Region(0x100, 0x104, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_LOGO`
[INFO] [stderr]    --> src/hw/cart.rs:123:3
[INFO] [stderr]     |
[INFO] [stderr] 123 |   pub const META_LOGO: Region<[u8; 0x30]>   = Region(0x104, 0x134, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_MANUFACTURER`
[INFO] [stderr]    --> src/hw/cart.rs:125:3
[INFO] [stderr]     |
[INFO] [stderr] 125 |   pub const META_MANUFACTURER: Region<u32>  = Region(0x13F, 0x143, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_LICENSEE`
[INFO] [stderr]    --> src/hw/cart.rs:127:3
[INFO] [stderr]     |
[INFO] [stderr] 127 |   pub const META_LICENSEE: Region<u16>      = Region(0x144, 0x146, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_DEST`
[INFO] [stderr]    --> src/hw/cart.rs:132:3
[INFO] [stderr]     |
[INFO] [stderr] 132 |   pub const META_DEST: Region<u8>          = Region(0x14A, 0x14B, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_LICENSEE_OLD`
[INFO] [stderr]    --> src/hw/cart.rs:133:3
[INFO] [stderr]     |
[INFO] [stderr] 133 |   pub const META_LICENSEE_OLD: Region<u8>  = Region(0x14B, 0x14C, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_VERSION`
[INFO] [stderr]    --> src/hw/cart.rs:134:3
[INFO] [stderr]     |
[INFO] [stderr] 134 |   pub const META_VERSION: Region<u8>       = Region(0x14C, 0x14D, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `META_CHECKSUM_ALL`
[INFO] [stderr]    --> src/hw/cart.rs:136:3
[INFO] [stderr]     |
[INFO] [stderr] 136 |   pub const META_CHECKSUM_ALL: Region<u16> = Region(0x14E, 0x150, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EXEC_BOOT`
[INFO] [stderr]    --> src/hw/cart.rs:140:3
[INFO] [stderr]     |
[INFO] [stderr] 140 |   pub const EXEC_BOOT: Region<[u8; 256]>   = Region(0x0, 0x256, PhantomData);
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `has_component`
[INFO] [stderr]    --> src/hw/cart.rs:206:3
[INFO] [stderr]     |
[INFO] [stderr] 206 |   pub fn has_component(&self, cmp: Component) -> bool {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bytes`
[INFO] [stderr]    --> src/hw/cart.rs:260:3
[INFO] [stderr]     |
[INFO] [stderr] 260 |   fn bytes(&self) -> &'a [u8] {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size_bytes`
[INFO] [stderr]    --> src/hw/cart.rs:277:3
[INFO] [stderr]     |
[INFO] [stderr] 277 |   pub fn size_bytes(self) -> usize {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size_bytes`
[INFO] [stderr]    --> src/hw/cart.rs:320:3
[INFO] [stderr]     |
[INFO] [stderr] 320 |   pub fn size_bytes(self) -> usize {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CYCLE_INCREMENT`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const CYCLE_INCREMENT: usize = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Clock`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Clock {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Frequency`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub enum Frequency {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:33:3
[INFO] [stderr]    |
[INFO] [stderr] 33 |   pub fn new(freq: Frequency) -> Clock {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_start_time`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:37:3
[INFO] [stderr]    |
[INFO] [stderr] 37 |   pub fn new_start_time(time: usize, freq: Frequency) -> Clock {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `incr`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:44:3
[INFO] [stderr]    |
[INFO] [stderr] 44 |   pub fn incr(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `incr_n`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn incr_n(&mut self, n: usize) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `time`
[INFO] [stderr]   --> src/hw/cpu/clock.rs:52:3
[INFO] [stderr]    |
[INFO] [stderr] 52 |   pub fn time(&self) -> usize {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Immediate`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | enum Immediate {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Opcode`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | enum Opcode {
[INFO] [stderr]    | ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Instr`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:54:1
[INFO] [stderr]    |
[INFO] [stderr] 54 | enum Instr {
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Result`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | type Result<T> = result::Result<T, decode::DecodeErr>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `decode`
[INFO] [stderr]   --> src/hw/cpu/instr.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |   pub fn decode(raw: &[u8]) -> Result<Instr> {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Result`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:109:3
[INFO] [stderr]     |
[INFO] [stderr] 109 |   pub type Result<T> = result::Result<T, DecodeErr>;
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `bytes`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     bytes: [u8; 4],
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `state`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:116:5
[INFO] [stderr]     |
[INFO] [stderr] 116 |     state: S,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DblPrefix`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:131:3
[INFO] [stderr]     |
[INFO] [stderr] 131 |   struct DblPrefix {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Opcode`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:135:3
[INFO] [stderr]     |
[INFO] [stderr] 135 |   struct Opcode {
[INFO] [stderr]     |   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Displace`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:139:3
[INFO] [stderr]     |
[INFO] [stderr] 139 |   struct Displace {
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Immed`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:143:3
[INFO] [stderr]     |
[INFO] [stderr] 143 |   struct Immed {
[INFO] [stderr]     |   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/hw/cpu/instr.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub fn new(bytes: [u8; 4]) -> Decoder<Start> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Reg`
[INFO] [stderr]   --> src/hw/cpu/register.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct Reg {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CompositeReg`
[INFO] [stderr]   --> src/hw/cpu/register.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | pub struct CompositeReg {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Zero`
[INFO] [stderr]   --> src/hw/cpu/register.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |   Zero = 1 << 7,
[INFO] [stderr]    |   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AddSub`
[INFO] [stderr]   --> src/hw/cpu/register.rs:39:3
[INFO] [stderr]    |
[INFO] [stderr] 39 |   AddSub = 1 << 6,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HalfCarry`
[INFO] [stderr]   --> src/hw/cpu/register.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   HalfCarry = 1 << 5,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Carry`
[INFO] [stderr]   --> src/hw/cpu/register.rs:41:3
[INFO] [stderr]    |
[INFO] [stderr] 41 |   Carry = 1 << 4
[INFO] [stderr]    |   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upper`
[INFO] [stderr]   --> src/hw/cpu/register.rs:57:3
[INFO] [stderr]    |
[INFO] [stderr] 57 |   pub fn upper(&self) -> &Reg {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `upper_mut`
[INFO] [stderr]   --> src/hw/cpu/register.rs:61:3
[INFO] [stderr]    |
[INFO] [stderr] 61 |   pub fn upper_mut(&mut self) -> &mut Reg {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lower`
[INFO] [stderr]   --> src/hw/cpu/register.rs:65:3
[INFO] [stderr]    |
[INFO] [stderr] 65 |   pub fn lower(&self) -> &Reg {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lower_mut`
[INFO] [stderr]   --> src/hw/cpu/register.rs:69:3
[INFO] [stderr]    |
[INFO] [stderr] 69 |   pub fn lower_mut(&mut self) -> &mut Reg {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/hw/cpu/register.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |   pub fn new(initial: u16) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/hw/cpu/register.rs:86:3
[INFO] [stderr]    |
[INFO] [stderr] 86 |   pub fn new(initial: u8) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Processor`
[INFO] [stderr]   --> src/hw/cpu/mod.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub struct Processor {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/hw/cpu/mod.rs:37:3
[INFO] [stderr]    |
[INFO] [stderr] 37 |   pub fn new() -> Processor {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `start`
[INFO] [stderr]   --> src/hw/cpu/mod.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn start(&mut self) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MMU`
[INFO] [stderr]   --> src/hw/mmu.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub struct MMU {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/main.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | #![feature(try_from)]
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "955cda1d07f269af8241d0e2062d56f1304949f5f010ef2f26fb084d6bb9b5cd"`
[INFO] running `"docker" "rm" "-f" "955cda1d07f269af8241d0e2062d56f1304949f5f010ef2f26fb084d6bb9b5cd"`
[INFO] [stdout] 955cda1d07f269af8241d0e2062d56f1304949f5f010ef2f26fb084d6bb9b5cd