[INFO] cloning repository https://github.com/vgf89/chip8remu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vgf89/chip8remu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvgf89%2Fchip8remu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvgf89%2Fchip8remu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 707eca34e5f059f297556c8afd76ee9af8be3870
[INFO] checking vgf89/chip8remu against 1.95.0-beta.7 for beta-1.95-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvgf89%2Fchip8remu" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/vgf89/chip8remu
[INFO] finished tweaking git repo https://github.com/vgf89/chip8remu
[INFO] tweaked toml for git repo https://github.com/vgf89/chip8remu written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/vgf89/chip8remu on toolchain 1.95.0-beta.7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/vgf89/chip8remu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-iter v0.1.32
[INFO] [stderr]   Downloaded num-integer v0.1.32
[INFO] [stderr]   Downloaded num-traits v0.1.32
[INFO] [stderr]   Downloaded rand v0.3.14
[INFO] [stderr]   Downloaded sdl2-sys v0.30.0
[INFO] [stderr]   Downloaded num v0.1.32
[INFO] [stderr]   Downloaded sdl2 v0.30.0
[INFO] [stderr]   Downloaded libc v0.2.11
[INFO] [stderr]   Downloaded lazy_static v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 408bc18dd0bdcad36a8a8a2af290c8e973cacc0b5e59041904a273e2910c06bb
[INFO] running `Command { std: "docker" "start" "-a" "408bc18dd0bdcad36a8a8a2af290c8e973cacc0b5e59041904a273e2910c06bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "408bc18dd0bdcad36a8a8a2af290c8e973cacc0b5e59041904a273e2910c06bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408bc18dd0bdcad36a8a8a2af290c8e973cacc0b5e59041904a273e2910c06bb", kill_on_drop: false }`
[INFO] [stdout] 408bc18dd0bdcad36a8a8a2af290c8e973cacc0b5e59041904a273e2910c06bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84de7098a5aaf9a381506ed1d9bb2ab0425d0d9d14d92281c464abcaa3c64fb5
[INFO] running `Command { std: "docker" "start" "-a" "84de7098a5aaf9a381506ed1d9bb2ab0425d0d9d14d92281c464abcaa3c64fb5", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking num-traits v0.1.32
[INFO] [stderr]    Compiling sdl2-sys v0.30.0
[INFO] [stderr]     Checking libc v0.2.11
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking lazy_static v0.2.1
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking rand v0.3.14
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking num v0.1.32
[INFO] [stderr]     Checking sdl2 v0.30.0
[INFO] [stderr]     Checking chip8remu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Point`
[INFO] [stdout]  --> src/main.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | use sdl2::rect::{Point, Rect};
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::pixels::Color`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use sdl2::pixels::Color;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::mouse::MouseButton`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use sdl2::mouse::MouseButton;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::keyboard::Keycode`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use sdl2::keyboard::Keycode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `WindowContext` and `Window`
[INFO] [stdout]   --> src/main.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 | use sdl2::video::{Window, WindowContext};
[INFO] [stdout]    |                   ^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Canvas`, `TextureCreator`, and `Texture`
[INFO] [stdout]   --> src/main.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 | use sdl2::render::{Canvas, Texture, TextureCreator};
[INFO] [stdout]    |                    ^^^^^^  ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/chip8.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num::Wrapping`
[INFO] [stdout]  --> src/chip8.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::num::Wrapping;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/chip8.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut f = try!(File::open("roms/programs/Chip8 emulator Logo [Garstyciuks].ch8"));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Point`
[INFO] [stdout]  --> src/main.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 | use sdl2::rect::{Point, Rect};
[INFO] [stdout]   |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::pixels::Color`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use sdl2::pixels::Color;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::mouse::MouseButton`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use sdl2::mouse::MouseButton;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::keyboard::Keycode`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use sdl2::keyboard::Keycode;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `WindowContext` and `Window`
[INFO] [stdout]   --> src/main.rs:14:19
[INFO] [stdout]    |
[INFO] [stdout] 14 | use sdl2::video::{Window, WindowContext};
[INFO] [stdout]    |                   ^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Canvas`, `TextureCreator`, and `Texture`
[INFO] [stdout]   --> src/main.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 | use sdl2::render::{Canvas, Texture, TextureCreator};
[INFO] [stdout]    |                    ^^^^^^  ^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/chip8.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::num::Wrapping`
[INFO] [stdout]  --> src/chip8.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::num::Wrapping;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/chip8.rs:71:21
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut f = try!(File::open("roms/programs/Chip8 emulator Logo [Garstyciuks].ch8"));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut f = try!(File::open("roms/programs/Chip8 emulator Logo [Garstyciuks].ch8"));
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chip8.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let mut x = 0u8;
[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/chip8.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let mut y = 0u8;
[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/chip8.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let mut height = 0u8;
[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/chip8.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut pixel = 0u8;
[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/chip8.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let mut addr = 0u16;
[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/chip8.rs:353:21
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 let mut oldbit:bool = false;
[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/chip8.rs:438:29
[INFO] [stdout]     |
[INFO] [stdout] 438 |                         let mut vx = self.v[x as usize];
[INFO] [stdout]     |                             ----^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/chip8.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let mut x = 0u8;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/chip8.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let mut y = 0u8;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]    --> src/chip8.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let mut height = 0u8;
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pixel`
[INFO] [stdout]    --> src/chip8.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut pixel = 0u8;
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pixel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/chip8.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let mut addr = 0u16;
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `oldbit`
[INFO] [stdout]    --> src/chip8.rs:353:21
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 let mut oldbit:bool = false;
[INFO] [stdout]     |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_oldbit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/chip8.rs:462:29
[INFO] [stdout]     |
[INFO] [stdout] 462 |                         let vx = (self.v[x as usize] & 0x000F) as u16;
[INFO] [stdout]     |                             ^^ help: if this is intentional, prefix it with an underscore: `_vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `j` is never read
[INFO] [stdout]    --> src/chip8.rs:351:29
[INFO] [stdout]     |
[INFO] [stdout] 351 |                 let mut j = 0u8;
[INFO] [stdout]     |                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `newbit` is never read
[INFO] [stdout]    --> src/chip8.rs:352:39
[INFO] [stdout]     |
[INFO] [stdout] 352 |                 let mut newbit:bool = false;
[INFO] [stdout]     |                                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `keyboard`, `tinterval`, and `tcount` are never read
[INFO] [stdout]   --> src/chip8.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Chip8 {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub keyboard: [bool; 16],
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub tinterval: i32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 28 |     pub tcount: i32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     core.load_rom();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let _ = core.load_rom();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chip8.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut f = try!(File::open("roms/programs/Chip8 emulator Logo [Garstyciuks].ch8"));
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/chip8.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let mut x = 0u8;
[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/chip8.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let mut y = 0u8;
[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/chip8.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let mut height = 0u8;
[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/chip8.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut pixel = 0u8;
[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/chip8.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let mut addr = 0u16;
[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/chip8.rs:353:21
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 let mut oldbit:bool = false;
[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/chip8.rs:438:29
[INFO] [stdout]     |
[INFO] [stdout] 438 |                         let mut vx = self.v[x as usize];
[INFO] [stdout]     |                             ----^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/chip8.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |         let mut x = 0u8;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/chip8.rs:105:13
[INFO] [stdout]     |
[INFO] [stdout] 105 |         let mut y = 0u8;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]    --> src/chip8.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let mut height = 0u8;
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pixel`
[INFO] [stdout]    --> src/chip8.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut pixel = 0u8;
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pixel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]    --> src/chip8.rs:119:13
[INFO] [stdout]     |
[INFO] [stdout] 119 |         let mut addr = 0u16;
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `oldbit`
[INFO] [stdout]    --> src/chip8.rs:353:21
[INFO] [stdout]     |
[INFO] [stdout] 353 |                 let mut oldbit:bool = false;
[INFO] [stdout]     |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_oldbit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vx`
[INFO] [stdout]    --> src/chip8.rs:462:29
[INFO] [stdout]     |
[INFO] [stdout] 462 |                         let vx = (self.v[x as usize] & 0x000F) as u16;
[INFO] [stdout]     |                             ^^ help: if this is intentional, prefix it with an underscore: `_vx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `j` is never read
[INFO] [stdout]    --> src/chip8.rs:351:29
[INFO] [stdout]     |
[INFO] [stdout] 351 |                 let mut j = 0u8;
[INFO] [stdout]     |                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `newbit` is never read
[INFO] [stdout]    --> src/chip8.rs:352:39
[INFO] [stdout]     |
[INFO] [stdout] 352 |                 let mut newbit:bool = false;
[INFO] [stdout]     |                                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `keyboard`, `tinterval`, and `tcount` are never read
[INFO] [stdout]   --> src/chip8.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Chip8 {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub keyboard: [bool; 16],
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub tinterval: i32,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] 28 |     pub tcount: i32,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     core.load_rom();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let _ = core.load_rom();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.57s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.7.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "84de7098a5aaf9a381506ed1d9bb2ab0425d0d9d14d92281c464abcaa3c64fb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84de7098a5aaf9a381506ed1d9bb2ab0425d0d9d14d92281c464abcaa3c64fb5", kill_on_drop: false }`
[INFO] [stdout] 84de7098a5aaf9a381506ed1d9bb2ab0425d0d9d14d92281c464abcaa3c64fb5
