[INFO] cloning repository https://github.com/MichaelGoodale/Rusted-Chip-8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MichaelGoodale/Rusted-Chip-8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMichaelGoodale%2FRusted-Chip-8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMichaelGoodale%2FRusted-Chip-8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 584696b49a791cafeb11aa6c5de1c2ce36cd2671
[INFO] testing MichaelGoodale/Rusted-Chip-8 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMichaelGoodale%2FRusted-Chip-8" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MichaelGoodale/Rusted-Chip-8 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MichaelGoodale/Rusted-Chip-8
[INFO] finished tweaking git repo https://github.com/MichaelGoodale/Rusted-Chip-8
[INFO] tweaked toml for git repo https://github.com/MichaelGoodale/Rusted-Chip-8 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/MichaelGoodale/Rusted-Chip-8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num v0.1.37
[INFO] [stderr]   Downloaded num-integer v0.1.33
[INFO] [stderr]   Downloaded sdl2 v0.29.0
[INFO] [stderr]   Downloaded sdl2-sys v0.27.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c18dff9a02c96bcded4338c727aa9b0b5caabbbb5dd672eff926c524cf070c15
[INFO] running `Command { std: "docker" "start" "-a" "c18dff9a02c96bcded4338c727aa9b0b5caabbbb5dd672eff926c524cf070c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c18dff9a02c96bcded4338c727aa9b0b5caabbbb5dd672eff926c524cf070c15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c18dff9a02c96bcded4338c727aa9b0b5caabbbb5dd672eff926c524cf070c15", kill_on_drop: false }`
[INFO] [stdout] c18dff9a02c96bcded4338c727aa9b0b5caabbbb5dd672eff926c524cf070c15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c8f9c42716d1f3faee6fffb884793cee1caa5231b6b9afb7a7e5509a0c3aecf
[INFO] running `Command { std: "docker" "start" "-a" "3c8f9c42716d1f3faee6fffb884793cee1caa5231b6b9afb7a7e5509a0c3aecf", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.1.37
[INFO] [stderr]    Compiling sdl2-sys v0.27.2
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num-integer v0.1.33
[INFO] [stderr]    Compiling num-iter v0.1.33
[INFO] [stderr]    Compiling num v0.1.37
[INFO] [stderr]    Compiling sdl2 v0.29.0
[INFO] [stderr]    Compiling chip8_emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env::current_dir`
[INFO] [stdout]  --> src/cpu.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env::current_dir;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |         if(c.do_cycle()) {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/cpu.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 56 | ...                   why.description()),
[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/main.rs:117:6
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let mut events = ctx.event_pump().unwrap();
[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/cpu.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let mut file = match File::open(&path) {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `do_opcode`
[INFO] [stdout]    --> src/cpu.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 |     pub fn do_opcode(&mut self, opcode: u16) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 |                         r.draw_point(Point::new(i as i32, j as i32));
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:113:2
[INFO] [stdout]     |
[INFO] [stdout] 113 |     renderer.set_scale(WINDOW_SCALE as f32, WINDOW_SCALE as f32);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:225:10
[INFO] [stdout]     |
[INFO] [stdout] 225 |                 let (Vx, Vy) = (self.v[x as usize] as usize, self.v[y as usize] as usize);
[INFO] [stdout]     |                      ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:225:14
[INFO] [stdout]     |
[INFO] [stdout] 225 |                 let (Vx, Vy) = (self.v[x as usize] as usize, self.v[y as usize] as usize);
[INFO] [stdout]     |                          ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.43s
[INFO] running `Command { std: "docker" "inspect" "3c8f9c42716d1f3faee6fffb884793cee1caa5231b6b9afb7a7e5509a0c3aecf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c8f9c42716d1f3faee6fffb884793cee1caa5231b6b9afb7a7e5509a0c3aecf", kill_on_drop: false }`
[INFO] [stdout] 3c8f9c42716d1f3faee6fffb884793cee1caa5231b6b9afb7a7e5509a0c3aecf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 059404e0f0a4f38d4834fcb8be9222852fd6882dd4c4b193bdf5a1b07c483302
[INFO] running `Command { std: "docker" "start" "-a" "059404e0f0a4f38d4834fcb8be9222852fd6882dd4c4b193bdf5a1b07c483302", kill_on_drop: false }`
[INFO] [stderr]    Compiling chip8_emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env::current_dir`
[INFO] [stdout]  --> src/cpu.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env::current_dir;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |         if(c.do_cycle()) {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/cpu.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 56 | ...                   why.description()),
[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/main.rs:117:6
[INFO] [stdout]     |
[INFO] [stdout] 117 |     let mut events = ctx.event_pump().unwrap();
[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/cpu.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let mut file = match File::open(&path) {
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `do_opcode`
[INFO] [stdout]    --> src/cpu.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 |     pub fn do_opcode(&mut self, opcode: u16) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 |                         r.draw_point(Point::new(i as i32, j as i32));
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:113:2
[INFO] [stdout]     |
[INFO] [stdout] 113 |     renderer.set_scale(WINDOW_SCALE as f32, WINDOW_SCALE as f32);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vx` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:225:10
[INFO] [stdout]     |
[INFO] [stdout] 225 |                 let (Vx, Vy) = (self.v[x as usize] as usize, self.v[y as usize] as usize);
[INFO] [stdout]     |                      ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Vy` should have a snake case name
[INFO] [stdout]    --> src/cpu.rs:225:14
[INFO] [stdout]     |
[INFO] [stdout] 225 |                 let (Vx, Vy) = (self.v[x as usize] as usize, self.v[y as usize] as usize);
[INFO] [stdout]     |                          ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "059404e0f0a4f38d4834fcb8be9222852fd6882dd4c4b193bdf5a1b07c483302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "059404e0f0a4f38d4834fcb8be9222852fd6882dd4c4b193bdf5a1b07c483302", kill_on_drop: false }`
[INFO] [stdout] 059404e0f0a4f38d4834fcb8be9222852fd6882dd4c4b193bdf5a1b07c483302
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bbdd577e1759fee797e2c342c2650f73c8c34f8265efdbf6fbe6168fe5a07bca
[INFO] running `Command { std: "docker" "start" "-a" "bbdd577e1759fee797e2c342c2650f73c8c34f8265efdbf6fbe6168fe5a07bca", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `std::env::current_dir`
[INFO] [stdout] running 0 tests
[INFO] [stderr]  --> src/cpu.rs:3:5
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 3 | use std::env::current_dir;
[INFO] [stdout] 
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/main.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |         if(c.do_cycle()) {
[INFO] [stderr]    |           ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/cpu.rs:56:16
[INFO] [stderr]    |
[INFO] [stderr] 56 | ...                   why.description()),
[INFO] [stderr]    |                           ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:117:6
[INFO] [stderr]     |
[INFO] [stderr] 117 |     let mut events = ctx.event_pump().unwrap();
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/cpu.rs:54:7
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let mut file = match File::open(&path) {
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `do_opcode`
[INFO] [stderr]    --> src/cpu.rs:325:9
[INFO] [stderr]     |
[INFO] [stderr] 325 |     pub fn do_opcode(&mut self, opcode: u16) {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:90:7
[INFO] [stderr]    |
[INFO] [stderr] 90 |                         r.draw_point(Point::new(i as i32, j as i32));
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:113:2
[INFO] [stderr]     |
[INFO] [stderr] 113 |     renderer.set_scale(WINDOW_SCALE as f32, WINDOW_SCALE as f32);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Vx` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:225:10
[INFO] [stderr]     |
[INFO] [stderr] 225 |                 let (Vx, Vy) = (self.v[x as usize] as usize, self.v[y as usize] as usize);
[INFO] [stderr]     |                      ^^ help: convert the identifier to snake case (notice the capitalization): `vx`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Vy` should have a snake case name
[INFO] [stderr]    --> src/cpu.rs:225:14
[INFO] [stderr]     |
[INFO] [stderr] 225 |                 let (Vx, Vy) = (self.v[x as usize] as usize, self.v[y as usize] as usize);
[INFO] [stderr]     |                          ^^ help: convert the identifier to snake case (notice the capitalization): `vy`
[INFO] [stderr] 
[INFO] [stderr] warning: `chip8_emu` (bin "chip8_emu" test) generated 10 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chip8_emu-183e8036d39463e3)
[INFO] running `Command { std: "docker" "inspect" "bbdd577e1759fee797e2c342c2650f73c8c34f8265efdbf6fbe6168fe5a07bca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbdd577e1759fee797e2c342c2650f73c8c34f8265efdbf6fbe6168fe5a07bca", kill_on_drop: false }`
[INFO] [stdout] bbdd577e1759fee797e2c342c2650f73c8c34f8265efdbf6fbe6168fe5a07bca