[INFO] updating cached repository strangelovephd/rusty_chip
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/strangelovephd/rusty_chip
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/strangelovephd/rusty_chip" "work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/strangelovephd/rusty_chip"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/strangelovephd/rusty_chip'...
[INFO] [stderr] done.
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[INFO] running `"git" "clone" "work/cache/sources/gh/strangelovephd/rusty_chip" "work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/strangelovephd/rusty_chip"`
[INFO] [stderr] Cloning into 'work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/strangelovephd/rusty_chip'...
[INFO] [stderr] done.
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[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e7e75a9fd2fd93b6fab22e8932b4d8e3c0ece105
[INFO] sha for GitHub repo strangelovephd/rusty_chip: e7e75a9fd2fd93b6fab22e8932b4d8e3c0ece105
[INFO] validating manifest of strangelovephd/rusty_chip on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of strangelovephd/rusty_chip on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing strangelovephd/rusty_chip
[INFO] finished frobbing strangelovephd/rusty_chip
[INFO] frobbed toml for strangelovephd/rusty_chip written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/gh/strangelovephd/rusty_chip/Cargo.toml
[INFO] started frobbing strangelovephd/rusty_chip
[INFO] finished frobbing strangelovephd/rusty_chip
[INFO] frobbed toml for strangelovephd/rusty_chip written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/strangelovephd/rusty_chip/Cargo.toml
[INFO] crate strangelovephd/rusty_chip already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking strangelovephd/rusty_chip against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-0/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/gh/strangelovephd/rusty_chip:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 673367ee37377e15e9f3d0a401957a13bae88e5821e505cc813239677c94a191
[INFO] running `"docker" "start" "-a" "673367ee37377e15e9f3d0a401957a13bae88e5821e505cc813239677c94a191"`
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling phf_shared v0.7.23
[INFO] [stderr]     Checking draw_state v0.7.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking rusttype v0.2.3
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]    Compiling gl_generator v0.6.1
[INFO] [stderr]    Compiling gl_generator v0.7.0
[INFO] [stderr]     Checking x11-dl v2.18.3
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling phf v0.7.23
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking memmap v0.4.0
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]     Checking pistoncore-input v0.20.0
[INFO] [stderr]     Checking gfx_core v0.7.2
[INFO] [stderr]     Checking rayon-core v1.4.1
[INFO] [stderr]     Checking piston2d-graphics v0.24.0
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]    Compiling glutin v0.10.1
[INFO] [stderr]    Compiling gfx_gl v0.4.0
[INFO] [stderr]    Compiling gl v0.7.0
[INFO] [stderr]     Checking rayon v1.0.3
[INFO] [stderr]     Checking pistoncore-window v0.30.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.35.0
[INFO] [stderr]     Checking piston v0.35.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.9.10
[INFO] [stderr]     Checking wayland-client v0.9.10
[INFO] [stderr]     Checking wayland-protocols v0.9.10
[INFO] [stderr]     Checking wayland-kbd v0.9.1
[INFO] [stderr]     Checking wayland-window v0.8.0
[INFO] [stderr]     Checking winit v0.8.3
[INFO] [stderr]     Checking pistoncore-glutin_window v0.43.0
[INFO] [stderr]     Checking gfx v0.16.3
[INFO] [stderr]     Checking gfx_device_gl v0.14.6
[INFO] [stderr]     Checking piston-gfx_texture v0.30.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.47.0
[INFO] [stderr]     Checking piston_window v0.74.0
[INFO] [stderr]     Checking rusty_chip8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `BLACK`, `HEIGHT`, `WHITE`, `WIDTH`, `draw_block`
[INFO] [stderr]  --> src/chip8.rs:9:23
[INFO] [stderr]   |
[INFO] [stderr] 9 | use super::graphics::{draw_block, Display, HEIGHT, WIDTH, BLACK, WHITE};
[INFO] [stderr]   |                       ^^^^^^^^^^           ^^^^^^  ^^^^^  ^^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `piston_window::types::Color`
[INFO] [stderr]   --> src/chip8.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use piston_window::types::Color;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `opcode` should have an upper camel case name
[INFO] [stderr]   --> src/chip8.rs:20:6
[INFO] [stderr]    |
[INFO] [stderr] 20 | type opcode = u16;
[INFO] [stderr]    |      ^^^^^^ help: convert the identifier to upper camel case: `Opcode`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around pattern
[INFO] [stderr]    --> src/chip8.rs:137:21
[INFO] [stderr]     |
[INFO] [stderr] 137 |                     (_) => {},
[INFO] [stderr]     |                     ^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/chip8.rs:287:9
[INFO] [stderr]     |
[INFO] [stderr] 287 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BLACK`, `HEIGHT`, `WHITE`, `WIDTH`, `draw_block`
[INFO] [stderr]  --> src/chip8.rs:9:23
[INFO] [stderr]   |
[INFO] [stderr] 9 | use super::graphics::{draw_block, Display, HEIGHT, WIDTH, BLACK, WHITE};
[INFO] [stderr]   |                       ^^^^^^^^^^           ^^^^^^  ^^^^^  ^^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `piston_window::types::Color`
[INFO] [stderr]   --> src/chip8.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use piston_window::types::Color;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `opcode` should have an upper camel case name
[INFO] [stderr]   --> src/chip8.rs:20:6
[INFO] [stderr]    |
[INFO] [stderr] 20 | type opcode = u16;
[INFO] [stderr]    |      ^^^^^^ help: convert the identifier to upper camel case: `Opcode`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around pattern
[INFO] [stderr]    --> src/chip8.rs:137:21
[INFO] [stderr]     |
[INFO] [stderr] 137 |                     (_) => {},
[INFO] [stderr]     |                     ^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/chip8.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |                     Err(s) => panic!("Error with stack: {}", s),
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/chip8.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |                     Err(s) => panic!("Error with stack: {}", s),
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unreachable_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/chip8.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let y = ((operation & 0x00F0) >> 4) as u8;
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/chip8.rs:213:21
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 let r: u8 = random();
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `con`
[INFO] [stderr]    --> src/chip8.rs:280:23
[INFO] [stderr]     |
[INFO] [stderr] 280 |     pub fn run(&self, con: &Context, g: &mut G2d) {}
[INFO] [stderr]     |                       ^^^ help: consider prefixing with an underscore: `_con`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]    --> src/chip8.rs:280:38
[INFO] [stderr]     |
[INFO] [stderr] 280 |     pub fn run(&self, con: &Context, g: &mut G2d) {}
[INFO] [stderr]     |                                      ^ help: consider prefixing with an underscore: `_g`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/chip8.rs:282:35
[INFO] [stderr]     |
[INFO] [stderr] 282 |     pub fn key_pressed(&mut self, key: Key) {}
[INFO] [stderr]     |                                   ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/chip8.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let y = ((operation & 0x00F0) >> 4) as u8;
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_y`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]    --> src/chip8.rs:213:21
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 let r: u8 = random();
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `con`
[INFO] [stderr]    --> src/chip8.rs:280:23
[INFO] [stderr]     |
[INFO] [stderr] 280 |     pub fn run(&self, con: &Context, g: &mut G2d) {}
[INFO] [stderr]     |                       ^^^ help: consider prefixing with an underscore: `_con`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]    --> src/chip8.rs:280:38
[INFO] [stderr]     |
[INFO] [stderr] 280 |     pub fn run(&self, con: &Context, g: &mut G2d) {}
[INFO] [stderr]     |                                      ^ help: consider prefixing with an underscore: `_g`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/chip8.rs:282:35
[INFO] [stderr]     |
[INFO] [stderr] 282 |     pub fn key_pressed(&mut self, key: Key) {}
[INFO] [stderr]     |                                   ^^^ help: consider prefixing with an underscore: `_key`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]   --> src/stack.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn size(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `picture_test`
[INFO] [stderr]    --> src/chip8.rs:269:5
[INFO] [stderr]     |
[INFO] [stderr] 269 |     pub fn picture_test(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]    --> src/chip8.rs:280:5
[INFO] [stderr]     |
[INFO] [stderr] 280 |     pub fn run(&self, con: &Context, g: &mut G2d) {}
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_coord_u32`
[INFO] [stderr]   --> src/graphics.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn to_coord_u32(c: i32) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `draw_rectangle`
[INFO] [stderr]   --> src/graphics.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn draw_rectangle(color: Color, x: i32, y: i32, width: i32, height: i32, con: &Context, g: &mut G2d) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Vx` should have a snake case name
[INFO] [stderr]    --> src/chip8.rs:118:13
[INFO] [stderr]     |
[INFO] [stderr] 118 |         let Vx = ((operation & 0x0F00) >> 8) as usize;
[INFO] [stderr]     |             ^^ help: convert the identifier to snake case: `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/chip8.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let Vy = ((operation & 0x00F0) >> 4) as usize;
[INFO] [stderr]     |             ^^ help: convert the identifier to snake case: `vy`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `picture_test`
[INFO] [stderr]    --> src/chip8.rs:269:5
[INFO] [stderr]     |
[INFO] [stderr] 269 |     pub fn picture_test(&mut self, x: usize, y: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]    --> src/chip8.rs:280:5
[INFO] [stderr]     |
[INFO] [stderr] 280 |     pub fn run(&self, con: &Context, g: &mut G2d) {}
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_coord_u32`
[INFO] [stderr]   --> src/graphics.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn to_coord_u32(c: i32) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `draw_rectangle`
[INFO] [stderr]   --> src/graphics.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn draw_rectangle(color: Color, x: i32, y: i32, width: i32, height: i32, con: &Context, g: &mut G2d) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/stack.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         dickwad.push(0x84);
[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 `std::result::Result` that must be used
[INFO] [stderr]   --> src/stack.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         dickwad.push(0x84);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/stack.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         dickwad.push(0x84);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/stack.rs:73:13
[INFO] [stderr]    |
[INFO] [stderr] 73 |             dickwad.push(i);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/stack.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |         dickwad.push(0x1);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/stack.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |         dickwad.push(0x2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/stack.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |         dickwad.push(0x3);
[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/chip8.rs:118:13
[INFO] [stderr]     |
[INFO] [stderr] 118 |         let Vx = ((operation & 0x0F00) >> 8) as usize;
[INFO] [stderr]     |             ^^ help: convert the identifier to snake case: `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/chip8.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let Vy = ((operation & 0x00F0) >> 4) as usize;
[INFO] [stderr]     |             ^^ help: convert the identifier to snake case: `vy`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `"docker" "inspect" "673367ee37377e15e9f3d0a401957a13bae88e5821e505cc813239677c94a191"`
[INFO] running `"docker" "rm" "-f" "673367ee37377e15e9f3d0a401957a13bae88e5821e505cc813239677c94a191"`
[INFO] [stdout] 673367ee37377e15e9f3d0a401957a13bae88e5821e505cc813239677c94a191