[INFO] updating cached repository bryantheastronaut/chip8
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bryantheastronaut/chip8
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bryantheastronaut/chip8" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/bryantheastronaut/chip8"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/bryantheastronaut/chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bryantheastronaut/chip8" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/bryantheastronaut/chip8"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/bryantheastronaut/chip8'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 57efca0a1156c6542f7bf5bd73bde08e4c8e02be
[INFO] sha for GitHub repo bryantheastronaut/chip8: 57efca0a1156c6542f7bf5bd73bde08e4c8e02be
[INFO] validating manifest of bryantheastronaut/chip8 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bryantheastronaut/chip8 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bryantheastronaut/chip8
[INFO] finished frobbing bryantheastronaut/chip8
[INFO] frobbed toml for bryantheastronaut/chip8 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/bryantheastronaut/chip8/Cargo.toml
[INFO] started frobbing bryantheastronaut/chip8
[INFO] finished frobbing bryantheastronaut/chip8
[INFO] frobbed toml for bryantheastronaut/chip8 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/bryantheastronaut/chip8/Cargo.toml
[INFO] crate bryantheastronaut/chip8 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking bryantheastronaut/chip8 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/bryantheastronaut/chip8:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ef9925f0483072e87e3bc3fcfd00bf198718237993a3d7e0bfa6d3125cda17ef
[INFO] running `"docker" "start" "-a" "ef9925f0483072e87e3bc3fcfd00bf198718237993a3d7e0bfa6d3125cda17ef"`
[INFO] [stderr]     Checking num-traits v0.2.1
[INFO] [stderr]    Compiling sdl2-sys v0.31.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking num-integer v0.1.36
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]     Checking CHIP8_emulator v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `sdl2::event::Event`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use sdl2::event::Event;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::keyboard::Keycode`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use sdl2::keyboard::Keycode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::event::Event`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use sdl2::event::Event;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::keyboard::Keycode`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use sdl2::keyboard::Keycode;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::time::Duration;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `event_pump`
[INFO] [stderr]   --> src/main.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut event_pump = sdl_context.event_pump().unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^ help: consider prefixing with an underscore: `_event_pump`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut i = 0;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]   --> src/main.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let chip = Chip::new();
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut event_pump = sdl_context.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/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut i = 0;
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `opcode`
[INFO] [stderr]  --> src/chip.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     opcode: u16,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `v`
[INFO] [stderr]  --> src/chip.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     v: [u8; 16], // cpu registers
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `i`
[INFO] [stderr]  --> src/chip.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     i: usize, // index register
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `pc`
[INFO] [stderr]  --> src/chip.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pc: usize, // program counter
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `gfx`
[INFO] [stderr]  --> src/chip.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     gfx: [u8; 2048], // on screen graphics. each represents one pixel 64px x 32px
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `stack`
[INFO] [stderr]   --> src/chip.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     stack: [u16; 16],
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sp`
[INFO] [stderr]   --> src/chip.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     sp: usize, // stack pointer
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `delay_timer`
[INFO] [stderr]   --> src/chip.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     delay_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sound_timer`
[INFO] [stderr]   --> src/chip.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `key`
[INFO] [stderr]   --> src/chip.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     key: [u16; 16], // might not need. i think sdl2 will handle key events for me
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `CHIP8_emulator` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `chip8_emulator`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `fontset` should have an upper case name
[INFO] [stderr]   --> src/chip.rs:41:8
[INFO] [stderr]    |
[INFO] [stderr] 41 | static fontset: [u8; 80] = [
[INFO] [stderr]    |        ^^^^^^^ help: convert the identifier to upper case: `FONTSET`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `event_pump`
[INFO] [stderr]   --> src/main.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut event_pump = sdl_context.event_pump().unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^ help: consider prefixing with an underscore: `_event_pump`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut i = 0;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `chip`
[INFO] [stderr]   --> src/main.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let chip = Chip::new();
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_chip`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut event_pump = sdl_context.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/main.rs:29:9
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let mut i = 0;
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `opcode`
[INFO] [stderr]  --> src/chip.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     opcode: u16,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `v`
[INFO] [stderr]  --> src/chip.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     v: [u8; 16], // cpu registers
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `i`
[INFO] [stderr]  --> src/chip.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     i: usize, // index register
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `pc`
[INFO] [stderr]  --> src/chip.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pc: usize, // program counter
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `gfx`
[INFO] [stderr]  --> src/chip.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     gfx: [u8; 2048], // on screen graphics. each represents one pixel 64px x 32px
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `stack`
[INFO] [stderr]   --> src/chip.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     stack: [u16; 16],
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sp`
[INFO] [stderr]   --> src/chip.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     sp: usize, // stack pointer
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `delay_timer`
[INFO] [stderr]   --> src/chip.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     delay_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sound_timer`
[INFO] [stderr]   --> src/chip.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `key`
[INFO] [stderr]   --> src/chip.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     key: [u16; 16], // might not need. i think sdl2 will handle key events for me
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `CHIP8_emulator` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `chip8_emulator`
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `fontset` should have an upper case name
[INFO] [stderr]   --> src/chip.rs:41:8
[INFO] [stderr]    |
[INFO] [stderr] 41 | static fontset: [u8; 80] = [
[INFO] [stderr]    |        ^^^^^^^ help: convert the identifier to upper case: `FONTSET`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.06s
[INFO] running `"docker" "inspect" "ef9925f0483072e87e3bc3fcfd00bf198718237993a3d7e0bfa6d3125cda17ef"`
[INFO] running `"docker" "rm" "-f" "ef9925f0483072e87e3bc3fcfd00bf198718237993a3d7e0bfa6d3125cda17ef"`
[INFO] [stdout] ef9925f0483072e87e3bc3fcfd00bf198718237993a3d7e0bfa6d3125cda17ef