[INFO] cloning repository https://github.com/nvjome/gameboy-emu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nvjome/gameboy-emu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnvjome%2Fgameboy-emu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnvjome%2Fgameboy-emu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6623168d7ae8ee1fe4f50e99f5f17819907c23b8
[INFO] checking nvjome/gameboy-emu against master#4eb62535fc12dd1a63fd43a4173e224e79313c4d for pr-158816
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnvjome%2Fgameboy-emu" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nvjome/gameboy-emu
[INFO] finished tweaking git repo https://github.com/nvjome/gameboy-emu
[INFO] tweaked toml for git repo https://github.com/nvjome/gameboy-emu written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nvjome/gameboy-emu on toolchain 4eb62535fc12dd1a63fd43a4173e224e79313c4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nvjome/gameboy-emu 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" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded boolean_expression v0.3.11
[INFO] [stderr]   Downloaded bitmatch v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3f3324c89e6fa61532fbb08debb5a96c37775ca721c82a18971dae7807178519
[INFO] running `Command { std: "docker" "start" "3f3324c89e6fa61532fbb08debb5a96c37775ca721c82a18971dae7807178519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f3324c89e6fa61532fbb08debb5a96c37775ca721c82a18971dae7807178519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3f3324c89e6fa61532fbb08debb5a96c37775ca721c82a18971dae7807178519" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f3324c89e6fa61532fbb08debb5a96c37775ca721c82a18971dae7807178519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3f3324c89e6fa61532fbb08debb5a96c37775ca721c82a18971dae7807178519" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]     Checking app v0.1.0 (/opt/rustwide/workdir/app)
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling boolean_expression v0.3.11
[INFO] [stderr]    Compiling bitmatch v0.1.1
[INFO] [stderr]     Checking gbcore v0.1.0 (/opt/rustwide/workdir/gbcore)
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:402:23
[INFO] [stdout]     |
[INFO] [stdout] 402 |           "10100ooo" => { // AND a, r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 403 | |             todo!()
[INFO] [stdout] 404 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:406:23
[INFO] [stdout]     |
[INFO] [stdout] 406 |           "10101ooo" => { // XOR a, r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 407 | |             todo!()
[INFO] [stdout] 408 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:410:23
[INFO] [stdout]     |
[INFO] [stdout] 410 |           "10110ooo" => { // OR a, r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 411 | |             todo!()
[INFO] [stdout] 412 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:674:23
[INFO] [stdout]     |
[INFO] [stdout] 674 |           "00000ooo" => { // RLC r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 675 | |             todo!()
[INFO] [stdout] 676 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:678:23
[INFO] [stdout]     |
[INFO] [stdout] 678 |           "00001ooo" => { // RRC r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 679 | |             todo!()
[INFO] [stdout] 680 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:682:23
[INFO] [stdout]     |
[INFO] [stdout] 682 |           "00010ooo" => { // RL r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 683 | |             todo!()
[INFO] [stdout] 684 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:686:23
[INFO] [stdout]     |
[INFO] [stdout] 686 |           "00011ooo" => { // RR r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 687 | |             todo!()
[INFO] [stdout] 688 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:690:23
[INFO] [stdout]     |
[INFO] [stdout] 690 |           "00100ooo" => { // SLA r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 691 | |             todo!()
[INFO] [stdout] 692 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:694:23
[INFO] [stdout]     |
[INFO] [stdout] 694 |           "00101ooo" => { // SRA r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 695 | |             todo!()
[INFO] [stdout] 696 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:713:23
[INFO] [stdout]     |
[INFO] [stdout] 713 |           "00111ooo" => { // SRL r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 714 | |             todo!()
[INFO] [stdout] 715 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cycles` is never read
[INFO] [stdout]    --> gbcore/src/instructions.rs:671:22
[INFO] [stdout]     |
[INFO] [stdout] 671 |     let mut cycles = 8;
[INFO] [stdout]     |                      ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 699 |             cycles = 2;
[INFO] [stdout]     |             ---------- `cycles` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `inc_high`, `dec_high`, `inc_low`, and `dec_low` are never used
[INFO] [stdout]   --> gbcore/src/registers.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl RegisterPair {
[INFO] [stdout]    | ----------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn inc_high(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn dec_high(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn inc_low(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn dec_low(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::wrapping_add` that must be used
[INFO] [stdout]   --> gbcore/src/registers.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         self.high.wrapping_add(1);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let _ = self.high.wrapping_add(1);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::wrapping_sub` that must be used
[INFO] [stdout]   --> gbcore/src/registers.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         self.high.wrapping_sub(1);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let _ = self.high.wrapping_sub(1);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::wrapping_add` that must be used
[INFO] [stdout]   --> gbcore/src/registers.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         self.low.wrapping_add(1);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let _ = self.low.wrapping_add(1);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::wrapping_sub` that must be used
[INFO] [stdout]   --> gbcore/src/registers.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         self.low.wrapping_sub(1);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let _ = self.low.wrapping_sub(1);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:402:23
[INFO] [stdout]     |
[INFO] [stdout] 402 |           "10100ooo" => { // AND a, r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 403 | |             todo!()
[INFO] [stdout] 404 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:406:23
[INFO] [stdout]     |
[INFO] [stdout] 406 |           "10101ooo" => { // XOR a, r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 407 | |             todo!()
[INFO] [stdout] 408 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:410:23
[INFO] [stdout]     |
[INFO] [stdout] 410 |           "10110ooo" => { // OR a, r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 411 | |             todo!()
[INFO] [stdout] 412 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:674:23
[INFO] [stdout]     |
[INFO] [stdout] 674 |           "00000ooo" => { // RLC r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 675 | |             todo!()
[INFO] [stdout] 676 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:678:23
[INFO] [stdout]     |
[INFO] [stdout] 678 |           "00001ooo" => { // RRC r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 679 | |             todo!()
[INFO] [stdout] 680 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:682:23
[INFO] [stdout]     |
[INFO] [stdout] 682 |           "00010ooo" => { // RL r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 683 | |             todo!()
[INFO] [stdout] 684 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:686:23
[INFO] [stdout]     |
[INFO] [stdout] 686 |           "00011ooo" => { // RR r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 687 | |             todo!()
[INFO] [stdout] 688 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:690:23
[INFO] [stdout]     |
[INFO] [stdout] 690 |           "00100ooo" => { // SLA r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 691 | |             todo!()
[INFO] [stdout] 692 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:694:23
[INFO] [stdout]     |
[INFO] [stdout] 694 |           "00101ooo" => { // SRA r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 695 | |             todo!()
[INFO] [stdout] 696 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o`
[INFO] [stdout]    --> gbcore/src/instructions.rs:713:23
[INFO] [stdout]     |
[INFO] [stdout] 713 |           "00111ooo" => { // SRL r8
[INFO] [stdout]     |  _______________________^
[INFO] [stdout] 714 | |             todo!()
[INFO] [stdout] 715 | |         },
[INFO] [stdout]     | |_________^ help: if this is intentional, prefix it with an underscore: `_o`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `cycles` is never read
[INFO] [stdout]    --> gbcore/src/instructions.rs:671:22
[INFO] [stdout]     |
[INFO] [stdout] 671 |     let mut cycles = 8;
[INFO] [stdout]     |                      ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 699 |             cycles = 2;
[INFO] [stdout]     |             ---------- `cycles` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `inc_high`, `dec_high`, `inc_low`, and `dec_low` are never used
[INFO] [stdout]   --> gbcore/src/registers.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl RegisterPair {
[INFO] [stdout]    | ----------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn inc_high(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn dec_high(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     pub fn inc_low(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn dec_low(&mut self) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::wrapping_add` that must be used
[INFO] [stdout]   --> gbcore/src/registers.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         self.high.wrapping_add(1);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let _ = self.high.wrapping_add(1);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::wrapping_sub` that must be used
[INFO] [stdout]   --> gbcore/src/registers.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         self.high.wrapping_sub(1);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let _ = self.high.wrapping_sub(1);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::wrapping_add` that must be used
[INFO] [stdout]   --> gbcore/src/registers.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         self.low.wrapping_add(1);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let _ = self.low.wrapping_add(1);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u8>::wrapping_sub` that must be used
[INFO] [stdout]   --> gbcore/src/registers.rs:46:9
[INFO] [stdout]    |
[INFO] [stdout] 46 |         self.low.wrapping_sub(1);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let _ = self.low.wrapping_sub(1);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.30s
[INFO] running `Command { std: "docker" "inspect" "3f3324c89e6fa61532fbb08debb5a96c37775ca721c82a18971dae7807178519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f3324c89e6fa61532fbb08debb5a96c37775ca721c82a18971dae7807178519", kill_on_drop: false }`
[INFO] [stdout] 3f3324c89e6fa61532fbb08debb5a96c37775ca721c82a18971dae7807178519
