[INFO] cloning repository https://github.com/williewillus/gbemu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/williewillus/gbemu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliewillus%2Fgbemu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliewillus%2Fgbemu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 422a566fb9adf57dca79166e5135056556e27be4
[INFO] testing williewillus/gbemu against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwilliewillus%2Fgbemu" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/williewillus/gbemu on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/williewillus/gbemu
[INFO] finished tweaking git repo https://github.com/williewillus/gbemu
[INFO] tweaked toml for git repo https://github.com/williewillus/gbemu written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/williewillus/gbemu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b34b5c171e761270ad22f313f2296e8848ddf44049ff4d373b9660820b08f4a1
[INFO] running `Command { std: "docker" "start" "-a" "b34b5c171e761270ad22f313f2296e8848ddf44049ff4d373b9660820b08f4a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b34b5c171e761270ad22f313f2296e8848ddf44049ff4d373b9660820b08f4a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b34b5c171e761270ad22f313f2296e8848ddf44049ff4d373b9660820b08f4a1", kill_on_drop: false }`
[INFO] [stdout] b34b5c171e761270ad22f313f2296e8848ddf44049ff4d373b9660820b08f4a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5e98f3b627f23a268112bb39e16761c5287aac9f9dcbef9bee78bb415b8debd7
[INFO] running `Command { std: "docker" "start" "-a" "5e98f3b627f23a268112bb39e16761c5287aac9f9dcbef9bee78bb415b8debd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling gbemu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/cpu/mod.rs:69:24
[INFO] [stdout]    |
[INFO] [stdout] 69 |             f(todo!(), self);
[INFO] [stdout]    |               -------  ^^^^ unreachable expression
[INFO] [stdout]    |               |
[INFO] [stdout]    |               any code following this expression is unreachable
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/cpu/mod.rs:52:24
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn peek(&self, addr: u16) -> u8 {
[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: `addr`
[INFO] [stdout]   --> src/cpu/mod.rs:60:28
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn poke(&mut self, addr: u16, v: u8) {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/cpu/mod.rs:60:39
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn poke(&mut self, addr: u16, v: u8) {
[INFO] [stdout]    |                                       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MEM_SZ`
[INFO] [stdout]  --> src/cpu/mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const MEM_SZ: usize = u16::MAX as usize;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `State`
[INFO] [stdout]  --> src/cpu/mod.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct State {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cpu/mod.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/cpu/mod.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn peek(&self, addr: u16) -> u8 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poke`
[INFO] [stdout]   --> src/cpu/mod.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn poke(&mut self, addr: u16, v: u8) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tick`
[INFO] [stdout]   --> src/cpu/mod.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn tick(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Insn`
[INFO] [stdout]  --> src/isa/mod.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Insn {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `NOP`
[INFO] [stdout]   --> src/isa/mod.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / pub static NOP: Insn = Insn {
[INFO] [stdout] 15 | |     stages: &[
[INFO] [stdout] 16 | |         |_, state| {
[INFO] [stdout] 17 | |             state.reg_pc += 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 20 | |     sealed: (),
[INFO] [stdout] 21 | | };
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `CB_DUMMY`
[INFO] [stdout]   --> src/isa/mod.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | / pub static CB_DUMMY: Insn = Insn {
[INFO] [stdout] 26 | |     stages: &[
[INFO] [stdout] 27 | |         |_, state| {
[INFO] [stdout] 28 | |             state.cb_prefix = true;
[INFO] [stdout] ...  |
[INFO] [stdout] 31 | |     sealed: (),
[INFO] [stdout] 32 | | };
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `Command { std: "docker" "inspect" "5e98f3b627f23a268112bb39e16761c5287aac9f9dcbef9bee78bb415b8debd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e98f3b627f23a268112bb39e16761c5287aac9f9dcbef9bee78bb415b8debd7", kill_on_drop: false }`
[INFO] [stdout] 5e98f3b627f23a268112bb39e16761c5287aac9f9dcbef9bee78bb415b8debd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d68ec1587609889a50b0ff10abf5cd669bfeca94e9ee6d69c0ad2eb4a9b45bc3
[INFO] running `Command { std: "docker" "start" "-a" "d68ec1587609889a50b0ff10abf5cd669bfeca94e9ee6d69c0ad2eb4a9b45bc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling gbemu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/cpu/mod.rs:69:24
[INFO] [stdout]    |
[INFO] [stdout] 69 |             f(todo!(), self);
[INFO] [stdout]    |               -------  ^^^^ unreachable expression
[INFO] [stdout]    |               |
[INFO] [stdout]    |               any code following this expression is unreachable
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/cpu/mod.rs:52:24
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn peek(&self, addr: u16) -> u8 {
[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: `addr`
[INFO] [stdout]   --> src/cpu/mod.rs:60:28
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn poke(&mut self, addr: u16, v: u8) {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/cpu/mod.rs:60:39
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn poke(&mut self, addr: u16, v: u8) {
[INFO] [stdout]    |                                       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MEM_SZ`
[INFO] [stdout]  --> src/cpu/mod.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const MEM_SZ: usize = u16::MAX as usize;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `State`
[INFO] [stdout]  --> src/cpu/mod.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct State {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/cpu/mod.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/cpu/mod.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn peek(&self, addr: u16) -> u8 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poke`
[INFO] [stdout]   --> src/cpu/mod.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn poke(&mut self, addr: u16, v: u8) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tick`
[INFO] [stdout]   --> src/cpu/mod.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn tick(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Insn`
[INFO] [stdout]  --> src/isa/mod.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Insn {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `NOP`
[INFO] [stdout]   --> src/isa/mod.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | / pub static NOP: Insn = Insn {
[INFO] [stdout] 15 | |     stages: &[
[INFO] [stdout] 16 | |         |_, state| {
[INFO] [stdout] 17 | |             state.reg_pc += 1;
[INFO] [stdout] ...  |
[INFO] [stdout] 20 | |     sealed: (),
[INFO] [stdout] 21 | | };
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `CB_DUMMY`
[INFO] [stdout]   --> src/isa/mod.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | / pub static CB_DUMMY: Insn = Insn {
[INFO] [stdout] 26 | |     stages: &[
[INFO] [stdout] 27 | |         |_, state| {
[INFO] [stdout] 28 | |             state.cb_prefix = true;
[INFO] [stdout] ...  |
[INFO] [stdout] 31 | |     sealed: (),
[INFO] [stdout] 32 | | };
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.01s
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d68ec1587609889a50b0ff10abf5cd669bfeca94e9ee6d69c0ad2eb4a9b45bc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d68ec1587609889a50b0ff10abf5cd669bfeca94e9ee6d69c0ad2eb4a9b45bc3", kill_on_drop: false }`
[INFO] [stdout] d68ec1587609889a50b0ff10abf5cd669bfeca94e9ee6d69c0ad2eb4a9b45bc3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 56161eca6d0a89fb0e67283024167a9bbb975c7c6496c5d82328d8d6957735b6
[INFO] running `Command { std: "docker" "start" "-a" "56161eca6d0a89fb0e67283024167a9bbb975c7c6496c5d82328d8d6957735b6", kill_on_drop: false }`
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/cpu/mod.rs:69:24
[INFO] [stderr]    |
[INFO] [stderr] 69 |             f(todo!(), self);
[INFO] [stderr]    |               -------  ^^^^ unreachable expression
[INFO] [stderr]    |               |
[INFO] [stderr]    |               any code following this expression is unreachable
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]   --> src/cpu/mod.rs:52:24
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn peek(&self, addr: u16) -> u8 {
[INFO] [stderr]    |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]   --> src/cpu/mod.rs:60:28
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn poke(&mut self, addr: u16, v: u8) {
[INFO] [stderr]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/cpu/mod.rs:60:39
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn poke(&mut self, addr: u16, v: u8) {
[INFO] [stderr]    |                                       ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `MEM_SZ`
[INFO] [stderr]  --> src/cpu/mod.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | const MEM_SZ: usize = u16::MAX as usize;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `State`
[INFO] [stderr]  --> src/cpu/mod.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct State {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/cpu/mod.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn new() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek`
[INFO] [stderr]   --> src/cpu/mod.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn peek(&self, addr: u16) -> u8 {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `poke`
[INFO] [stderr]   --> src/cpu/mod.rs:60:12
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn poke(&mut self, addr: u16, v: u8) {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `tick`
[INFO] [stderr]   --> src/cpu/mod.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn tick(&mut self) {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Insn`
[INFO] [stderr]  --> src/isa/mod.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Insn {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static is never used: `NOP`
[INFO] [stderr]   --> src/isa/mod.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | / pub static NOP: Insn = Insn {
[INFO] [stderr] 15 | |     stages: &[
[INFO] [stderr] 16 | |         |_, state| {
[INFO] [stderr] 17 | |             state.reg_pc += 1;
[INFO] [stderr] ...  |
[INFO] [stderr] 20 | |     sealed: (),
[INFO] [stderr] 21 | | };
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: static is never used: `CB_DUMMY`
[INFO] [stderr]   --> src/isa/mod.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | / pub static CB_DUMMY: Insn = Insn {
[INFO] [stderr] 26 | |     stages: &[
[INFO] [stderr] 27 | |         |_, state| {
[INFO] [stderr] 28 | |             state.cb_prefix = true;
[INFO] [stderr] ...  |
[INFO] [stderr] 31 | |     sealed: (),
[INFO] [stderr] 32 | | };
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: `gbemu` (bin "gbemu" test) generated 13 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gbemu-daa19affb26a2148)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "56161eca6d0a89fb0e67283024167a9bbb975c7c6496c5d82328d8d6957735b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56161eca6d0a89fb0e67283024167a9bbb975c7c6496c5d82328d8d6957735b6", kill_on_drop: false }`
[INFO] [stdout] 56161eca6d0a89fb0e67283024167a9bbb975c7c6496c5d82328d8d6957735b6