[INFO] cloning repository https://github.com/oem/gg-gb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oem/gg-gb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foem%2Fgg-gb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foem%2Fgg-gb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8e78af357886061aaf26bafc3694e0173d08a39
[INFO] testing oem/gg-gb against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Foem%2Fgg-gb" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oem/gg-gb on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oem/gg-gb
[INFO] finished tweaking git repo https://github.com/oem/gg-gb
[INFO] tweaked toml for git repo https://github.com/oem/gg-gb written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/oem/gg-gb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84d10e2569170f7d3d497726df3b07e681e1442fc42c6d83c0ac3d142aa2de7f
[INFO] running `Command { std: "docker" "start" "-a" "84d10e2569170f7d3d497726df3b07e681e1442fc42c6d83c0ac3d142aa2de7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84d10e2569170f7d3d497726df3b07e681e1442fc42c6d83c0ac3d142aa2de7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84d10e2569170f7d3d497726df3b07e681e1442fc42c6d83c0ac3d142aa2de7f", kill_on_drop: false }`
[INFO] [stdout] 84d10e2569170f7d3d497726df3b07e681e1442fc42c6d83c0ac3d142aa2de7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 302ca3b6f0a994f996e0344f20717842027e8a8e9b9a75aa48131a7f5691c1d3
[INFO] running `Command { std: "docker" "start" "-a" "302ca3b6f0a994f996e0344f20717842027e8a8e9b9a75aa48131a7f5691c1d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling gg-gb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/instructions/mod.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             _ => { /* TODO: implement more instructions */ }
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instructions/mod.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut instruction_byte = self.bus.read_byte(self.pc);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CPU`
[INFO] [stdout]  --> src/instructions/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct CPU {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MemoryBus`
[INFO] [stdout]  --> src/instructions/mod.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct MemoryBus {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_byte`
[INFO] [stdout]   --> src/instructions/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn read_byte(&self, address: u16) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Instruction`
[INFO] [stdout]   --> src/instructions/mod.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Instruction {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_byte`
[INFO] [stdout]   --> src/instructions/mod.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn from_byte(byte: u8) -> Option<Instruction> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IncDecTarget`
[INFO] [stdout]   --> src/instructions/mod.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | enum IncDecTarget {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ArithmeticTarget`
[INFO] [stdout]   --> src/instructions/mod.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum ArithmeticTarget {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute`
[INFO] [stdout]   --> src/instructions/mod.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn execute(&mut self, instruction: Instruction) -> u16 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `step`
[INFO] [stdout]   --> src/instructions/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn step(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/instructions/mod.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn add(&mut self, value: u8) -> u8 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_bc`
[INFO] [stdout]   --> src/registers/registers.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn get_bc(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_bc`
[INFO] [stdout]   --> src/registers/registers.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn set_bc(&mut self, value: u16) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_de`
[INFO] [stdout]   --> src/registers/registers.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_de(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_de`
[INFO] [stdout]   --> src/registers/registers.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn set_de(&mut self, value: u16) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u16>::wrapping_add` that must be used
[INFO] [stdout]   --> src/instructions/mod.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         self.pc.wrapping_add(1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "302ca3b6f0a994f996e0344f20717842027e8a8e9b9a75aa48131a7f5691c1d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "302ca3b6f0a994f996e0344f20717842027e8a8e9b9a75aa48131a7f5691c1d3", kill_on_drop: false }`
[INFO] [stdout] 302ca3b6f0a994f996e0344f20717842027e8a8e9b9a75aa48131a7f5691c1d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 89059dbb6ae793e7b23a03421f1a54087d60d06aa2e1f1a066dcd2574e7168e1
[INFO] running `Command { std: "docker" "start" "-a" "89059dbb6ae793e7b23a03421f1a54087d60d06aa2e1f1a066dcd2574e7168e1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/instructions/mod.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             _ => { /* TODO: implement more instructions */ }
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instructions/mod.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut instruction_byte = self.bus.read_byte(self.pc);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CPU`
[INFO] [stdout]  --> src/instructions/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct CPU {
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MemoryBus`
[INFO] [stdout]  --> src/instructions/mod.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct MemoryBus {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_byte`
[INFO] [stdout]   --> src/instructions/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn read_byte(&self, address: u16) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Instruction`
[INFO] [stdout]   --> src/instructions/mod.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Instruction {
[INFO] [stdout]    |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_byte`
[INFO] [stdout]   --> src/instructions/mod.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn from_byte(byte: u8) -> Option<Instruction> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `IncDecTarget`
[INFO] [stdout]   --> src/instructions/mod.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | enum IncDecTarget {
[INFO] [stdout]    |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ArithmeticTarget`
[INFO] [stdout]   --> src/instructions/mod.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum ArithmeticTarget {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute`
[INFO] [stdout]   --> src/instructions/mod.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn execute(&mut self, instruction: Instruction) -> u16 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `step`
[INFO] [stdout]   --> src/instructions/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn step(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add`
[INFO] [stdout]   --> src/instructions/mod.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn add(&mut self, value: u8) -> u8 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_bc`
[INFO] [stdout]   --> src/registers/registers.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn get_bc(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_bc`
[INFO] [stdout]   --> src/registers/registers.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn set_bc(&mut self, value: u16) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_de`
[INFO] [stdout]   --> src/registers/registers.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_de(&self) -> u16 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_de`
[INFO] [stdout]   --> src/registers/registers.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn set_de(&mut self, value: u16) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling gg-gb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `core::num::<impl u16>::wrapping_add` that must be used
[INFO] [stdout]   --> src/instructions/mod.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         self.pc.wrapping_add(1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/instructions/mod.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             _ => { /* TODO: implement more instructions */ }
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/instructions/mod.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut instruction_byte = self.bus.read_byte(self.pc);
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `bus`
[INFO] [stdout]  --> src/instructions/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     bus: MemoryBus,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `memory`
[INFO] [stdout]   --> src/instructions/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     memory: [u8; 0xFFFF],
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_byte`
[INFO] [stdout]   --> src/instructions/mod.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn read_byte(&self, address: u16) -> u8 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `INC`
[INFO] [stdout]   --> src/instructions/mod.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     INC(IncDecTarget),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_byte`
[INFO] [stdout]   --> src/instructions/mod.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn from_byte(byte: u8) -> Option<Instruction> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BC`
[INFO] [stdout]   --> src/instructions/mod.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     BC,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DE`
[INFO] [stdout]   --> src/instructions/mod.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     DE,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A`
[INFO] [stdout]   --> src/instructions/mod.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     A,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B`
[INFO] [stdout]   --> src/instructions/mod.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     B,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D`
[INFO] [stdout]   --> src/instructions/mod.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     D,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E`
[INFO] [stdout]   --> src/instructions/mod.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     E,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F`
[INFO] [stdout]   --> src/instructions/mod.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     F,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H`
[INFO] [stdout]   --> src/instructions/mod.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     H,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `L`
[INFO] [stdout]   --> src/instructions/mod.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     L,
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `step`
[INFO] [stdout]   --> src/instructions/mod.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn step(&mut self) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::num::<impl u16>::wrapping_add` that must be used
[INFO] [stdout]   --> src/instructions/mod.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         self.pc.wrapping_add(1);
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this returns the result of the operation, without modifying the original
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.90s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/gg_gb-5c837588c9cf60ad)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/gg_gb-ee947ee966c4d4d5)
[INFO] running `Command { std: "docker" "inspect" "89059dbb6ae793e7b23a03421f1a54087d60d06aa2e1f1a066dcd2574e7168e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89059dbb6ae793e7b23a03421f1a54087d60d06aa2e1f1a066dcd2574e7168e1", kill_on_drop: false }`
[INFO] [stdout] 89059dbb6ae793e7b23a03421f1a54087d60d06aa2e1f1a066dcd2574e7168e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ea9978b7e2f8ad2a6dda203b2db754dd3a29351a2f3a835bfb59dee81fdca4f5
[INFO] running `Command { std: "docker" "start" "-a" "ea9978b7e2f8ad2a6dda203b2db754dd3a29351a2f3a835bfb59dee81fdca4f5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stdout] running 19 tests
[INFO] [stderr]   --> src/instructions/mod.rs:69:13
[INFO] [stdout] test registers::flags_register::tests::convert_carry_flag_into_u8 ... ok
[INFO] [stderr]    |
[INFO] [stdout] test registers::flags_register::tests::convert_half_carry_into_u8 ... ok
[INFO] [stderr] 69 |             _ => { /* TODO: implement more instructions */ }
[INFO] [stdout] test registers::flags_register::tests::convert_some_into_u8 ... ok
[INFO] [stderr]    |             ^
[INFO] [stdout] test instructions::tests::inc_bc_will_increase ... ok
[INFO] [stderr]    |
[INFO] [stdout] test registers::flags_register::tests::convert_substract_flag_into_u8 ... ok
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] test instructions::tests::add_with_nibble_overflow_sets_half_carry ... ok
[INFO] [stderr] 
[INFO] [stdout] test registers::flags_register::tests::convert_u8_into_carry_flag ... ok
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] test registers::flags_register::tests::convert_u8_into_half_carry_flag ... ok
[INFO] [stderr]   --> src/instructions/mod.rs:75:13
[INFO] [stdout] test instructions::tests::add_c_to_a ... ok
[INFO] [stderr]    |
[INFO] [stdout] test instructions::tests::add_with_overflow_sets_carry ... ok
[INFO] [stderr] 75 |         let mut instruction_byte = self.bus.read_byte(self.pc);
[INFO] [stdout] test registers::flags_register::tests::convert_u8_into_substract_flag ... ok
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^^^
[INFO] [stdout] test registers::flags_register::tests::convert_u8_into_zero_flag ... ok
[INFO] [stderr]    |             |
[INFO] [stdout] test registers::flags_register::tests::convert_zero_flag_into_u8 ... ok
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stdout] test instructions::tests::add_sets_the_flags_to_false ... ok
[INFO] [stderr]    |
[INFO] [stdout] test registers::registers::tests::getting_16_bit_from_b_and_c ... ok
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] test registers::registers::tests::getting_16_bit_from_d_and_e ... ok
[INFO] [stderr] 
[INFO] [stdout] test registers::registers::tests::writing_16_bit_value_into_b_and_c ... ok
[INFO] [stderr] warning: struct is never constructed: `CPU`
[INFO] [stdout] test registers::registers::tests::writing_16_bit_value_into_d_and_e ... ok
[INFO] [stderr]  --> src/instructions/mod.rs:3:8
[INFO] [stdout] test registers::tests::using_flags_register ... ok
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 3 | struct CPU {
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stderr]   |        ^^^
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MemoryBus`
[INFO] [stderr]  --> src/instructions/mod.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct MemoryBus {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_byte`
[INFO] [stderr]   --> src/instructions/mod.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn read_byte(&self, address: u16) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Instruction`
[INFO] [stderr]   --> src/instructions/mod.rs:19:6
[INFO] [stderr]    |
[INFO] [stderr] 19 | enum Instruction {
[INFO] [stderr]    |      ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_byte`
[INFO] [stderr]   --> src/instructions/mod.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn from_byte(byte: u8) -> Option<Instruction> {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `IncDecTarget`
[INFO] [stderr]   --> src/instructions/mod.rs:33:6
[INFO] [stderr]    |
[INFO] [stderr] 33 | enum IncDecTarget {
[INFO] [stderr]    |      ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ArithmeticTarget`
[INFO] [stderr]   --> src/instructions/mod.rs:38:6
[INFO] [stderr]    |
[INFO] [stderr] 38 | enum ArithmeticTarget {
[INFO] [stderr]    |      ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `execute`
[INFO] [stderr]   --> src/instructions/mod.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn execute(&mut self, instruction: Instruction) -> u16 {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `step`
[INFO] [stderr]   --> src/instructions/mod.rs:74:8
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn step(&mut self) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add`
[INFO] [stderr]   --> src/instructions/mod.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn add(&mut self, value: u8) -> u8 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_bc`
[INFO] [stderr]   --> src/registers/registers.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn get_bc(&self) -> u16 {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_bc`
[INFO] [stderr]   --> src/registers/registers.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn set_bc(&mut self, value: u16) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_de`
[INFO] [stderr]   --> src/registers/registers.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn get_de(&self) -> u16 {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_de`
[INFO] [stderr]   --> src/registers/registers.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn set_de(&mut self, value: u16) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `core::num::<impl u16>::wrapping_add` that must be used
[INFO] [stderr]   --> src/instructions/mod.rs:58:25
[INFO] [stderr]    |
[INFO] [stderr] 58 |                         self.pc.wrapping_add(1);
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this returns the result of the operation, without modifying the original
[INFO] [stderr] 
[INFO] [stderr] warning: `gg-gb` (lib) generated 17 warnings
[INFO] [stderr] warning: field is never read: `bus`
[INFO] [stderr]  --> src/instructions/mod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     bus: MemoryBus,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `memory`
[INFO] [stderr]   --> src/instructions/mod.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     memory: [u8; 0xFFFF],
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `INC`
[INFO] [stderr]   --> src/instructions/mod.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     INC(IncDecTarget),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BC`
[INFO] [stderr]   --> src/instructions/mod.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     BC,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DE`
[INFO] [stderr]   --> src/instructions/mod.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     DE,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A`
[INFO] [stderr]   --> src/instructions/mod.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     A,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B`
[INFO] [stderr]   --> src/instructions/mod.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     B,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D`
[INFO] [stderr]   --> src/instructions/mod.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     D,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E`
[INFO] [stderr]   --> src/instructions/mod.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     E,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F`
[INFO] [stderr]   --> src/instructions/mod.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     F,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H`
[INFO] [stderr]   --> src/instructions/mod.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     H,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `L`
[INFO] [stderr]   --> src/instructions/mod.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     L,
[INFO] [stderr]    |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: `gg-gb` (lib test) generated 18 warnings (6 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.88s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/gg_gb-5c837588c9cf60ad)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/gg_gb-ee947ee966c4d4d5)
[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] [stderr]    Doc-tests gg-gb
[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" "ea9978b7e2f8ad2a6dda203b2db754dd3a29351a2f3a835bfb59dee81fdca4f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea9978b7e2f8ad2a6dda203b2db754dd3a29351a2f3a835bfb59dee81fdca4f5", kill_on_drop: false }`
[INFO] [stdout] ea9978b7e2f8ad2a6dda203b2db754dd3a29351a2f3a835bfb59dee81fdca4f5