[INFO] updating cached repository RickyBoyd/rust-gbemu
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/RickyBoyd/rust-gbemu
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/RickyBoyd/rust-gbemu" "work/ex/beta-1.38-1/sources/1.37.0/gh/RickyBoyd/rust-gbemu"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/RickyBoyd/rust-gbemu'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RickyBoyd/rust-gbemu" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RickyBoyd/rust-gbemu"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RickyBoyd/rust-gbemu'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d08b4b96b1db1ad1fbcefbab0e276fab5c25e063
[INFO] sha for GitHub repo RickyBoyd/rust-gbemu: d08b4b96b1db1ad1fbcefbab0e276fab5c25e063
[INFO] validating manifest of RickyBoyd/rust-gbemu on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of RickyBoyd/rust-gbemu on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing RickyBoyd/rust-gbemu
[INFO] finished frobbing RickyBoyd/rust-gbemu
[INFO] frobbed toml for RickyBoyd/rust-gbemu written to work/ex/beta-1.38-1/sources/1.37.0/gh/RickyBoyd/rust-gbemu/Cargo.toml
[INFO] started frobbing RickyBoyd/rust-gbemu
[INFO] finished frobbing RickyBoyd/rust-gbemu
[INFO] frobbed toml for RickyBoyd/rust-gbemu written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/RickyBoyd/rust-gbemu/Cargo.toml
[INFO] crate RickyBoyd/rust-gbemu already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing RickyBoyd/rust-gbemu against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/RickyBoyd/rust-gbemu:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] b1eef37517e7ee9a3e2573f53df35e5c14b283d7ddd6ee8ce8c9fbb4cf8fc36e
[INFO] running `"docker" "start" "-a" "b1eef37517e7ee9a3e2573f53df35e5c14b283d7ddd6ee8ce8c9fbb4cf8fc36e"`
[INFO] [stderr]    Compiling rust-gbemu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/cpu.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std;
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]  --> src/mmu.rs:8:30
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn write_byte(&self, addr: u16) {
[INFO] [stderr]   |                              ^^^^ help: consider prefixing 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/mmu.rs:12:30
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn write_word(&self, addr: u16) {
[INFO] [stderr]    |                              ^^^^ help: consider prefixing with an underscore: `_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]   --> src/mmu.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn read_byte(&self, addr: u16) -> u8 {
[INFO] [stderr]    |                             ^^^^ help: consider prefixing with an underscore: `_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]   --> src/mmu.rs:20:29
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn read_word(&self, addr: u16) -> u16 {
[INFO] [stderr]    |                             ^^^^ help: consider prefixing with an underscore: `_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Flag`
[INFO] [stderr]  --> src/cpu.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct Flag {
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/cpu.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new() -> Flag {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/cpu.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn set(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unset`
[INFO] [stderr]   --> src/cpu.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn unset(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `toggle`
[INFO] [stderr]   --> src/cpu.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn toggle(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Flags`
[INFO] [stderr]   --> src/cpu.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct Flags {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/cpu.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn new() -> Flags {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]   --> src/cpu.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn reset(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Registers`
[INFO] [stderr]   --> src/cpu.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | struct Registers {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/cpu.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn new() -> Registers {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bc`
[INFO] [stderr]   --> src/cpu.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fn bc(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `de`
[INFO] [stderr]   --> src/cpu.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn de(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `hl`
[INFO] [stderr]   --> src/cpu.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn hl(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_bc`
[INFO] [stderr]   --> src/cpu.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn set_bc(&mut self, v: u16) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_de`
[INFO] [stderr]    --> src/cpu.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     fn set_de(&mut self, v: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_hl`
[INFO] [stderr]    --> src/cpu.rs:106:5
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn set_hl(&mut self, v: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Cpu`
[INFO] [stderr]    --> src/cpu.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | pub struct Cpu {
[INFO] [stderr]     | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/cpu.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn new() -> Cpu {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add8`
[INFO] [stderr]    --> src/cpu.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 |     fn add8(&mut self, x: u8, y: u8) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_instuction_byte`
[INFO] [stderr]    --> src/cpu.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     fn next_instuction_byte(&mut self, mmu: &Mmu) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute_cycle`
[INFO] [stderr]    --> src/cpu.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     fn execute_cycle(&mut self, mmu: &Mmu) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute_instruction`
[INFO] [stderr]    --> src/cpu.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 |     fn execute_instruction(&mut self, mmu: &Mmu) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `WRAM_SIZE`
[INFO] [stderr]  --> src/mmu.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | const WRAM_SIZE: usize = 16000;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Mmu`
[INFO] [stderr]  --> src/mmu.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Mmu {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_byte`
[INFO] [stderr]  --> src/mmu.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn write_byte(&self, addr: u16) {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_word`
[INFO] [stderr]   --> src/mmu.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn write_word(&self, addr: u16) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/mmu.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn read_byte(&self, addr: u16) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_word`
[INFO] [stderr]   --> src/mmu.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn read_word(&self, addr: u16) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "b1eef37517e7ee9a3e2573f53df35e5c14b283d7ddd6ee8ce8c9fbb4cf8fc36e"`
[INFO] running `"docker" "rm" "-f" "b1eef37517e7ee9a3e2573f53df35e5c14b283d7ddd6ee8ce8c9fbb4cf8fc36e"`
[INFO] [stdout] b1eef37517e7ee9a3e2573f53df35e5c14b283d7ddd6ee8ce8c9fbb4cf8fc36e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/RickyBoyd/rust-gbemu:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f2135ca2a7222d62186fe6aa412d2c7c7b4aa84b22205912bcc10c6040250e93
[INFO] running `"docker" "start" "-a" "f2135ca2a7222d62186fe6aa412d2c7c7b4aa84b22205912bcc10c6040250e93"`
[INFO] [stderr]    Compiling rust-gbemu v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std`
[INFO] [stderr]  --> src/cpu.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std;
[INFO] [stderr]   |     ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]  --> src/mmu.rs:8:30
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn write_byte(&self, addr: u16) {
[INFO] [stderr]   |                              ^^^^ help: consider prefixing 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/mmu.rs:12:30
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn write_word(&self, addr: u16) {
[INFO] [stderr]    |                              ^^^^ help: consider prefixing with an underscore: `_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]   --> src/mmu.rs:16:29
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn read_byte(&self, addr: u16) -> u8 {
[INFO] [stderr]    |                             ^^^^ help: consider prefixing with an underscore: `_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `addr`
[INFO] [stderr]   --> src/mmu.rs:20:29
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn read_word(&self, addr: u16) -> u16 {
[INFO] [stderr]    |                             ^^^^ help: consider prefixing with an underscore: `_addr`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Flag`
[INFO] [stderr]  --> src/cpu.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct Flag {
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/cpu.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn new() -> Flag {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set`
[INFO] [stderr]   --> src/cpu.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn set(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unset`
[INFO] [stderr]   --> src/cpu.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn unset(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `toggle`
[INFO] [stderr]   --> src/cpu.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn toggle(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Flags`
[INFO] [stderr]   --> src/cpu.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | struct Flags {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/cpu.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn new() -> Flags {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset`
[INFO] [stderr]   --> src/cpu.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn reset(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Registers`
[INFO] [stderr]   --> src/cpu.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | struct Registers {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/cpu.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn new() -> Registers {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bc`
[INFO] [stderr]   --> src/cpu.rs:84:5
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fn bc(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `de`
[INFO] [stderr]   --> src/cpu.rs:88:5
[INFO] [stderr]    |
[INFO] [stderr] 88 |     fn de(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `hl`
[INFO] [stderr]   --> src/cpu.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     fn hl(&self) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_bc`
[INFO] [stderr]   --> src/cpu.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn set_bc(&mut self, v: u16) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_de`
[INFO] [stderr]    --> src/cpu.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     fn set_de(&mut self, v: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_hl`
[INFO] [stderr]    --> src/cpu.rs:106:5
[INFO] [stderr]     |
[INFO] [stderr] 106 |     fn set_hl(&mut self, v: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Cpu`
[INFO] [stderr]    --> src/cpu.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | pub struct Cpu {
[INFO] [stderr]     | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/cpu.rs:117:5
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn new() -> Cpu {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add8`
[INFO] [stderr]    --> src/cpu.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 |     fn add8(&mut self, x: u8, y: u8) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_instuction_byte`
[INFO] [stderr]    --> src/cpu.rs:129:5
[INFO] [stderr]     |
[INFO] [stderr] 129 |     fn next_instuction_byte(&mut self, mmu: &Mmu) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute_cycle`
[INFO] [stderr]    --> src/cpu.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     fn execute_cycle(&mut self, mmu: &Mmu) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute_instruction`
[INFO] [stderr]    --> src/cpu.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 |     fn execute_instruction(&mut self, mmu: &Mmu) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `WRAM_SIZE`
[INFO] [stderr]  --> src/mmu.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | const WRAM_SIZE: usize = 16000;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Mmu`
[INFO] [stderr]  --> src/mmu.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Mmu {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_byte`
[INFO] [stderr]  --> src/mmu.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn write_byte(&self, addr: u16) {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_word`
[INFO] [stderr]   --> src/mmu.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn write_word(&self, addr: u16) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/mmu.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn read_byte(&self, addr: u16) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_word`
[INFO] [stderr]   --> src/mmu.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn read_word(&self, addr: u16) -> u16 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "f2135ca2a7222d62186fe6aa412d2c7c7b4aa84b22205912bcc10c6040250e93"`
[INFO] running `"docker" "rm" "-f" "f2135ca2a7222d62186fe6aa412d2c7c7b4aa84b22205912bcc10c6040250e93"`
[INFO] [stdout] f2135ca2a7222d62186fe6aa412d2c7c7b4aa84b22205912bcc10c6040250e93
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/RickyBoyd/rust-gbemu:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 7f64ca8bd21750a0bc7111d460f558c1876df29e05161ccf7e3a59445fce68e2
[INFO] running `"docker" "start" "-a" "7f64ca8bd21750a0bc7111d460f558c1876df29e05161ccf7e3a59445fce68e2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_gbemu-69c4d226f03a74be
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7f64ca8bd21750a0bc7111d460f558c1876df29e05161ccf7e3a59445fce68e2"`
[INFO] running `"docker" "rm" "-f" "7f64ca8bd21750a0bc7111d460f558c1876df29e05161ccf7e3a59445fce68e2"`
[INFO] [stdout] 7f64ca8bd21750a0bc7111d460f558c1876df29e05161ccf7e3a59445fce68e2