[INFO] updating cached repository oem/gg-gb
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/oem/gg-gb
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/oem/gg-gb" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/oem/gg-gb"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/oem/gg-gb'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/oem/gg-gb" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/oem/gg-gb"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/oem/gg-gb'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 73672940eaff2a8dd2adb1d6271a49ba63c5d460
[INFO] sha for GitHub repo oem/gg-gb: 73672940eaff2a8dd2adb1d6271a49ba63c5d460
[INFO] validating manifest of oem/gg-gb on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of oem/gg-gb on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing oem/gg-gb
[INFO] finished frobbing oem/gg-gb
[INFO] frobbed toml for oem/gg-gb written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/oem/gg-gb/Cargo.toml
[INFO] started frobbing oem/gg-gb
[INFO] finished frobbing oem/gg-gb
[INFO] frobbed toml for oem/gg-gb written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/oem/gg-gb/Cargo.toml
[INFO] crate oem/gg-gb already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking oem/gg-gb against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-3/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/oem/gg-gb:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 94f758de23ef94a2d7cc0a0e2a6b248b8c91cdafbc99e4a4d12ec179dc732bec
[INFO] running `"docker" "start" "-a" "94f758de23ef94a2d7cc0a0e2a6b248b8c91cdafbc99e4a4d12ec179dc732bec"`
[INFO] [stderr]     Checking gg-gb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/instructions/mod.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |             _ => { /* TODO: implement more instructions */ }
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instructions/mod.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let mut instruction_byte = self.bus.read_byte(self.pc);
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CPU`
[INFO] [stderr]  --> src/instructions/mod.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct CPU {
[INFO] [stderr]   | ^^^^^^^^^^
[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:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct MemoryBus {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/instructions/mod.rs:14:5
[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:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | enum Instruction {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_byte`
[INFO] [stderr]   --> src/instructions/mod.rs:25:5
[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:33:1
[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:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | enum ArithmeticTarget {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute`
[INFO] [stderr]   --> src/instructions/mod.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn execute(&mut self, instruction: Instruction) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `step`
[INFO] [stderr]   --> src/instructions/mod.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn step(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/instructions/mod.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn add(&mut self, value: u8) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_bc`
[INFO] [stderr]   --> src/registers/registers.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn get_bc(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_bc`
[INFO] [stderr]   --> src/registers/registers.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn set_bc(&mut self, value: u16) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_de`
[INFO] [stderr]   --> src/registers/registers.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn get_de(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_de`
[INFO] [stderr]   --> src/registers/registers.rs:29:5
[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: unreachable pattern
[INFO] [stderr]   --> src/instructions/mod.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |             _ => { /* TODO: implement more instructions */ }
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/instructions/mod.rs:75:13
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let mut instruction_byte = self.bus.read_byte(self.pc);
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `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 used: `memory`
[INFO] [stderr]   --> src/instructions/mod.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     memory: [u8; 0xFFFF],
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/instructions/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn read_byte(&self, address: u16) -> u8 {
[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: method is never used: `from_byte`
[INFO] [stderr]   --> src/instructions/mod.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn from_byte(byte: u8) -> Option<Instruction> {
[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: method is never used: `step`
[INFO] [stderr]   --> src/instructions/mod.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn step(&mut self) {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `"docker" "inspect" "94f758de23ef94a2d7cc0a0e2a6b248b8c91cdafbc99e4a4d12ec179dc732bec"`
[INFO] running `"docker" "rm" "-f" "94f758de23ef94a2d7cc0a0e2a6b248b8c91cdafbc99e4a4d12ec179dc732bec"`
[INFO] [stdout] 94f758de23ef94a2d7cc0a0e2a6b248b8c91cdafbc99e4a4d12ec179dc732bec