[INFO] cloning repository https://github.com/JVehaun/gb-emu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JVehaun/gb-emu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJVehaun%2Fgb-emu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJVehaun%2Fgb-emu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7e4f9d90b1102be5ff444228df62cb0e61b8cc3
[INFO] checking JVehaun/gb-emu against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJVehaun%2Fgb-emu" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JVehaun/gb-emu on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JVehaun/gb-emu
[INFO] finished tweaking git repo https://github.com/JVehaun/gb-emu
[INFO] tweaked toml for git repo https://github.com/JVehaun/gb-emu written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/JVehaun/gb-emu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 100c070a392cbc636dd2dc246345e60d0830cc835027df2a7349d9f95698dda7
[INFO] running `Command { std: "docker" "start" "-a" "100c070a392cbc636dd2dc246345e60d0830cc835027df2a7349d9f95698dda7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "100c070a392cbc636dd2dc246345e60d0830cc835027df2a7349d9f95698dda7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "100c070a392cbc636dd2dc246345e60d0830cc835027df2a7349d9f95698dda7", kill_on_drop: false }`
[INFO] [stdout] 100c070a392cbc636dd2dc246345e60d0830cc835027df2a7349d9f95698dda7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f775c0da7526f293b29cf985c7e74ababccf47a4de7e59fa762f5b6e5703ccd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6f775c0da7526f293b29cf985c7e74ababccf47a4de7e59fa762f5b6e5703ccd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking gb-emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:785:30
[INFO] [stdout]     |
[INFO] [stdout] 785 |                     getter: &Fn(&mut GB) -> u8,
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:786:25
[INFO] [stdout]     |
[INFO] [stdout] 786 |                     f: &Fn(&mut GB, u8) -> u8,
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:787:30
[INFO] [stdout]     |
[INFO] [stdout] 787 |                     setter: &Fn(&mut GB, u8)) -> u32 {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:794:37
[INFO] [stdout]     |
[INFO] [stdout] 794 |     pub fn shift_mem(&mut self, f: &Fn(&mut GB, u8) -> u8) -> u32 {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:962:37
[INFO] [stdout]     |
[INFO] [stdout] 962 |     fn ld_r8_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:962:63
[INFO] [stdout]     |
[INFO] [stdout] 962 |     fn ld_r8_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:968:62
[INFO] [stdout]     |
[INFO] [stdout] 968 |     fn ld_mem_r16_r8(&mut self, dest_addr: u16, src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:974:47
[INFO] [stdout]     |
[INFO] [stdout] 974 |     fn ld_r8_mem_r16(&mut self, dest_setter: &Fn(&mut GB, u8), src_addr: u16) -> u32 {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:980:37
[INFO] [stdout]     |
[INFO] [stdout] 980 |     fn ld_r8_d8(&mut self, setter: &Fn(&mut GB, u8), val: u8) -> u32 {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1012:57
[INFO] [stdout]      |
[INFO] [stdout] 1012 |     fn ldh_mem_a8_r8(&mut self, dest_addr: u8, getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                         ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1019:42
[INFO] [stdout]      |
[INFO] [stdout] 1019 |     fn ldh_r8_mem_a8(&mut self, setter: &Fn(&mut GB, u8), src_addr: u8) -> u32 {
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1026:46
[INFO] [stdout]      |
[INFO] [stdout] 1026 |     fn ld_mem_r8_r8(&mut self, dest_getter: &Fn(&mut GB) -> u8, src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1026:78
[INFO] [stdout]      |
[INFO] [stdout] 1026 |     fn ld_mem_r8_r8(&mut self, dest_getter: &Fn(&mut GB) -> u8, src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1034:46
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     fn ld_r8_mem_r8(&mut self, dest_setter: &Fn(&mut GB, u8), src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1034:76
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     fn ld_r8_mem_r8(&mut self, dest_setter: &Fn(&mut GB, u8), src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                                            ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1471:35
[INFO] [stdout]      |
[INFO] [stdout] 1471 |     fn dec_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                   ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1471:61
[INFO] [stdout]      |
[INFO] [stdout] 1471 |     fn dec_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1548:35
[INFO] [stdout]      |
[INFO] [stdout] 1548 |     fn inc_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                   ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1548:61
[INFO] [stdout]      |
[INFO] [stdout] 1548 |     fn inc_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/tests.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::gb::GB`
[INFO] [stdout]  --> src/tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::gb::GB;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     'main: loop {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:785:30
[INFO] [stdout]     |
[INFO] [stdout] 785 |                     getter: &Fn(&mut GB) -> u8,
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:786:25
[INFO] [stdout]     |
[INFO] [stdout] 786 |                     f: &Fn(&mut GB, u8) -> u8,
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:787:30
[INFO] [stdout]     |
[INFO] [stdout] 787 |                     setter: &Fn(&mut GB, u8)) -> u32 {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:794:37
[INFO] [stdout]     |
[INFO] [stdout] 794 |     pub fn shift_mem(&mut self, f: &Fn(&mut GB, u8) -> u8) -> u32 {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:962:37
[INFO] [stdout]     |
[INFO] [stdout] 962 |     fn ld_r8_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:962:63
[INFO] [stdout]     |
[INFO] [stdout] 962 |     fn ld_r8_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:968:62
[INFO] [stdout]     |
[INFO] [stdout] 968 |     fn ld_mem_r16_r8(&mut self, dest_addr: u16, src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]     |                                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:974:47
[INFO] [stdout]     |
[INFO] [stdout] 974 |     fn ld_r8_mem_r16(&mut self, dest_setter: &Fn(&mut GB, u8), src_addr: u16) -> u32 {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/gb.rs:980:37
[INFO] [stdout]     |
[INFO] [stdout] 980 |     fn ld_r8_d8(&mut self, setter: &Fn(&mut GB, u8), val: u8) -> u32 {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1012:57
[INFO] [stdout]      |
[INFO] [stdout] 1012 |     fn ldh_mem_a8_r8(&mut self, dest_addr: u8, getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                         ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1019:42
[INFO] [stdout]      |
[INFO] [stdout] 1019 |     fn ldh_r8_mem_a8(&mut self, setter: &Fn(&mut GB, u8), src_addr: u8) -> u32 {
[INFO] [stdout]      |                                          ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1026:46
[INFO] [stdout]      |
[INFO] [stdout] 1026 |     fn ld_mem_r8_r8(&mut self, dest_getter: &Fn(&mut GB) -> u8, src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1026:78
[INFO] [stdout]      |
[INFO] [stdout] 1026 |     fn ld_mem_r8_r8(&mut self, dest_getter: &Fn(&mut GB) -> u8, src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1034:46
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     fn ld_r8_mem_r8(&mut self, dest_setter: &Fn(&mut GB, u8), src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                              ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1034:76
[INFO] [stdout]      |
[INFO] [stdout] 1034 |     fn ld_r8_mem_r8(&mut self, dest_setter: &Fn(&mut GB, u8), src_getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                                            ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1471:35
[INFO] [stdout]      |
[INFO] [stdout] 1471 |     fn dec_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                   ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1471:61
[INFO] [stdout]      |
[INFO] [stdout] 1471 |     fn dec_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1548:35
[INFO] [stdout]      |
[INFO] [stdout] 1548 |     fn inc_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                   ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB, u8)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/gb.rs:1548:61
[INFO] [stdout]      |
[INFO] [stdout] 1548 |     fn inc_r8(&mut self, setter: &Fn(&mut GB, u8), getter: &Fn(&mut GB) -> u8) -> u32 {
[INFO] [stdout]      |                                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut GB) -> u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]     --> src/gb.rs:2690:13
[INFO] [stdout]      |
[INFO] [stdout] 2690 |     gb.bc = (0x1111);
[INFO] [stdout]      |             ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]     --> src/gb.rs:2697:13
[INFO] [stdout]      |
[INFO] [stdout] 2697 |     gb.bc = (0x1111);
[INFO] [stdout]      |             ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude::*`
[INFO] [stdout]  --> src/tests.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::gb::GB`
[INFO] [stdout]  --> src/tests.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::gb::GB;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     'main: loop {
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:568:13
[INFO] [stdout]     |
[INFO] [stdout] 568 |             (0x66, _) => { self.ld_r8_mem_r16(&GB::set_a, self.hl) }
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:726:13
[INFO] [stdout]     |
[INFO] [stdout] 726 |             (0x18, val) => { self.jr_nz_a8(val as i8) }
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:743:13
[INFO] [stdout]     |
[INFO] [stdout] 743 |             (0xC8, _) => { self.ret_c_a16() }
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:770:13
[INFO] [stdout]     |
[INFO] [stdout] 770 |             (0xF1, _) => { self.pop_af() }
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:776:13
[INFO] [stdout]     |
[INFO] [stdout] 776 |             (0x27, _) => { self.daa() }
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timer`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut timer = 0;
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timer`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pc_inc`
[INFO] [stdout]    --> src/gb.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut pc_inc: u16 = 0;
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pc_inc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/gb.rs:665:20
[INFO] [stdout]     |
[INFO] [stdout] 665 |             (0xE2, val) => { self.ld_mem_r8_r8(&GB::get_c, &GB::get_a) }
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/gb.rs:666:20
[INFO] [stdout]     |
[INFO] [stdout] 666 |             (0xF2, val) => { self.ld_r8_mem_r8(&GB::set_a, &GB::get_c) }
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/gb.rs:669:20
[INFO] [stdout]     |
[INFO] [stdout] 669 |             (0xF9, val) => { self.ld_sp_hl() }
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sign`
[INFO] [stdout]    --> src/gb.rs:860:13
[INFO] [stdout]     |
[INFO] [stdout] 860 |         let sign = r >> 7;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_sign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]     --> src/gb.rs:1819:18
[INFO] [stdout]      |
[INFO] [stdout] 1819 |             let (a, result) = a.overflowing_add(0x06);
[INFO] [stdout]      |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]     --> src/gb.rs:1819:21
[INFO] [stdout]      |
[INFO] [stdout] 1819 |             let (a, result) = a.overflowing_add(0x06);
[INFO] [stdout]      |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]     --> src/gb.rs:1821:18
[INFO] [stdout]      |
[INFO] [stdout] 1821 |             let (a, _) = a.overflowing_add(0x60);
[INFO] [stdout]      |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]     --> src/gb.rs:1823:18
[INFO] [stdout]      |
[INFO] [stdout] 1823 |             let (a, _) = a.overflowing_sub(0x06);
[INFO] [stdout]      |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]     --> src/gb.rs:1825:18
[INFO] [stdout]      |
[INFO] [stdout] 1825 |             let (a, _) = a.overflowing_sub(0x60);
[INFO] [stdout]      |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut timer = 0;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/gb.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut cartridge = Cartridge {
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/gb.rs:134:21
[INFO] [stdout]     |
[INFO] [stdout] 134 |                 let mut address = format!("{:2X}{:2X} ",
[INFO] [stdout]     |                     ----^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/gb.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut pc_inc: u16 = 0;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/gb.rs:813:12
[INFO] [stdout]     |
[INFO] [stdout] 813 |     fn rrc(mut gb: &mut GB, mut r: u8) -> u8 {
[INFO] [stdout]     |            ----^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1091:14
[INFO] [stdout]      |
[INFO] [stdout] 1091 |         let (mut result, _) = a.overflowing_add(val);
[INFO] [stdout]      |              ----^^^^^^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1186:14
[INFO] [stdout]      |
[INFO] [stdout] 1186 |         let (mut result, _) = a.overflowing_sub(val);
[INFO] [stdout]      |              ----^^^^^^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1246:14
[INFO] [stdout]      |
[INFO] [stdout] 1246 |         let (mut result, _) = a.overflowing_sub(val);
[INFO] [stdout]      |              ----^^^^^^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1472:13
[INFO] [stdout]      |
[INFO] [stdout] 1472 |         let mut val = getter(self);
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1497:13
[INFO] [stdout]      |
[INFO] [stdout] 1497 |         let mut val = self.mem_read(self.hl);
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1549:13
[INFO] [stdout]      |
[INFO] [stdout] 1549 |         let mut val = getter(self);
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1574:13
[INFO] [stdout]      |
[INFO] [stdout] 1574 |         let mut val = self.mem_read(self.hl);
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1817:13
[INFO] [stdout]      |
[INFO] [stdout] 1817 |         let mut a = self.get_a();
[INFO] [stdout]      |             ----^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_hl`
[INFO] [stdout]    --> src/gb.rs:160:12
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn set_hl(&mut self, val: u16) { self.hl = val }
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ld_mem_a16_r16`
[INFO] [stdout]    --> src/gb.rs:992:8
[INFO] [stdout]     |
[INFO] [stdout] 992 |     fn ld_mem_a16_r16(&mut self, dest_addr: u16, val: u16) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ld_mem_a16_a`
[INFO] [stdout]     --> src/gb.rs:1073:8
[INFO] [stdout]      |
[INFO] [stdout] 1073 |     fn ld_mem_a16_a(&mut self) -> u32 {
[INFO] [stdout]      |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ld_a_mem_a16`
[INFO] [stdout]     --> src/gb.rs:1080:8
[INFO] [stdout]      |
[INFO] [stdout] 1080 |     fn ld_a_mem_a16(&mut self) -> u32 {
[INFO] [stdout]      |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 56 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:568:13
[INFO] [stdout]     |
[INFO] [stdout] 568 |             (0x66, _) => { self.ld_r8_mem_r16(&GB::set_a, self.hl) }
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:726:13
[INFO] [stdout]     |
[INFO] [stdout] 726 |             (0x18, val) => { self.jr_nz_a8(val as i8) }
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:743:13
[INFO] [stdout]     |
[INFO] [stdout] 743 |             (0xC8, _) => { self.ret_c_a16() }
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:770:13
[INFO] [stdout]     |
[INFO] [stdout] 770 |             (0xF1, _) => { self.pop_af() }
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/gb.rs:776:13
[INFO] [stdout]     |
[INFO] [stdout] 776 |             (0x27, _) => { self.daa() }
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timer`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut timer = 0;
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timer`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pc_inc`
[INFO] [stdout]    --> src/gb.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut pc_inc: u16 = 0;
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pc_inc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/gb.rs:665:20
[INFO] [stdout]     |
[INFO] [stdout] 665 |             (0xE2, val) => { self.ld_mem_r8_r8(&GB::get_c, &GB::get_a) }
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/gb.rs:666:20
[INFO] [stdout]     |
[INFO] [stdout] 666 |             (0xF2, val) => { self.ld_r8_mem_r8(&GB::set_a, &GB::get_c) }
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/gb.rs:669:20
[INFO] [stdout]     |
[INFO] [stdout] 669 |             (0xF9, val) => { self.ld_sp_hl() }
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sign`
[INFO] [stdout]    --> src/gb.rs:860:13
[INFO] [stdout]     |
[INFO] [stdout] 860 |         let sign = r >> 7;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_sign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]     --> src/gb.rs:1819:18
[INFO] [stdout]      |
[INFO] [stdout] 1819 |             let (a, result) = a.overflowing_add(0x06);
[INFO] [stdout]      |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]     --> src/gb.rs:1819:21
[INFO] [stdout]      |
[INFO] [stdout] 1819 |             let (a, result) = a.overflowing_add(0x06);
[INFO] [stdout]      |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]     --> src/gb.rs:1821:18
[INFO] [stdout]      |
[INFO] [stdout] 1821 |             let (a, _) = a.overflowing_add(0x60);
[INFO] [stdout]      |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]     --> src/gb.rs:1823:18
[INFO] [stdout]      |
[INFO] [stdout] 1823 |             let (a, _) = a.overflowing_sub(0x06);
[INFO] [stdout]      |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]     --> src/gb.rs:1825:18
[INFO] [stdout]      |
[INFO] [stdout] 1825 |             let (a, _) = a.overflowing_sub(0x60);
[INFO] [stdout]      |                  ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let mut timer = 0;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/gb.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let mut cartridge = Cartridge {
[INFO] [stdout]    |             ----^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/gb.rs:134:21
[INFO] [stdout]     |
[INFO] [stdout] 134 |                 let mut address = format!("{:2X}{:2X} ",
[INFO] [stdout]     |                     ----^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/gb.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut pc_inc: u16 = 0;
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/gb.rs:813:12
[INFO] [stdout]     |
[INFO] [stdout] 813 |     fn rrc(mut gb: &mut GB, mut r: u8) -> u8 {
[INFO] [stdout]     |            ----^^
[INFO] [stdout]     |            |
[INFO] [stdout]     |            help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1091:14
[INFO] [stdout]      |
[INFO] [stdout] 1091 |         let (mut result, _) = a.overflowing_add(val);
[INFO] [stdout]      |              ----^^^^^^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1186:14
[INFO] [stdout]      |
[INFO] [stdout] 1186 |         let (mut result, _) = a.overflowing_sub(val);
[INFO] [stdout]      |              ----^^^^^^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1246:14
[INFO] [stdout]      |
[INFO] [stdout] 1246 |         let (mut result, _) = a.overflowing_sub(val);
[INFO] [stdout]      |              ----^^^^^^
[INFO] [stdout]      |              |
[INFO] [stdout]      |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1472:13
[INFO] [stdout]      |
[INFO] [stdout] 1472 |         let mut val = getter(self);
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1497:13
[INFO] [stdout]      |
[INFO] [stdout] 1497 |         let mut val = self.mem_read(self.hl);
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1549:13
[INFO] [stdout]      |
[INFO] [stdout] 1549 |         let mut val = getter(self);
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1574:13
[INFO] [stdout]      |
[INFO] [stdout] 1574 |         let mut val = self.mem_read(self.hl);
[INFO] [stdout]      |             ----^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/gb.rs:1817:13
[INFO] [stdout]      |
[INFO] [stdout] 1817 |         let mut a = self.get_a();
[INFO] [stdout]      |             ----^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "6f775c0da7526f293b29cf985c7e74ababccf47a4de7e59fa762f5b6e5703ccd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f775c0da7526f293b29cf985c7e74ababccf47a4de7e59fa762f5b6e5703ccd", kill_on_drop: false }`
[INFO] [stdout] 6f775c0da7526f293b29cf985c7e74ababccf47a4de7e59fa762f5b6e5703ccd