[INFO] updating cached repository https://github.com/rpg2014/CHIP-8
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2f7db781dba1ff4452085c27c4218858e0b68f9e
[INFO] checking rpg2014/CHIP-8 against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frpg2014%2FCHIP-8" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rpg2014/CHIP-8 on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rpg2014/CHIP-8
[INFO] finished tweaking git repo https://github.com/rpg2014/CHIP-8
[INFO] tweaked toml for git repo https://github.com/rpg2014/CHIP-8 written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rpg2014/CHIP-8 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2d3a0af2f8ee6a7706dbfd0cce8149ff6854d98819631c8a48d93d46db2d6df5
[INFO] running `"docker" "start" "-a" "2d3a0af2f8ee6a7706dbfd0cce8149ff6854d98819631c8a48d93d46db2d6df5"`
[INFO] [stderr]     Checking string-error v0.1.0
[INFO] [stderr]     Checking CHIP-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `ClearType`
[INFO] [stderr]  --> src/main.rs:6:75
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crossterm::{terminal, Terminal, RawScreen, Crossterm, TerminalCursor, ClearType, AsyncReader, InputEvent, KeyEvent};
[INFO] [stderr]   |                                                                           ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Bytes`
[INFO] [stderr]  --> src/chip.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::Bytes;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `string_error::static_err`
[INFO] [stderr]  --> src/chip.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use string_error::static_err;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `Chip_8` should have an upper camel case name
[INFO] [stderr]   --> src/chip.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub struct Chip_8 {
[INFO] [stderr]    |            ^^^^^^ help: convert the identifier to upper camel case: `Chip8`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     Ok(())
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `raw`
[INFO] [stderr]   --> src/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let raw = RawScreen::into_raw_mode();
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_raw`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `terminal`
[INFO] [stderr]   --> src/main.rs:41:49
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn draw_graphics(graphics_buffer: &[u8; 64*32], terminal: &Terminal) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                                                 ^^^^^^^^ help: consider prefixing with an underscore: `_terminal`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/keyboard.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn is_valid_key(c: char) -> bool {
[INFO] [stderr]    |                         ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ClearType`
[INFO] [stderr]  --> src/main.rs:6:75
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crossterm::{terminal, Terminal, RawScreen, Crossterm, TerminalCursor, ClearType, AsyncReader, InputEvent, KeyEvent};
[INFO] [stderr]   |                                                                           ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Bytes`
[INFO] [stderr]  --> src/chip.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::Bytes;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `string_error::static_err`
[INFO] [stderr]  --> src/chip.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use string_error::static_err;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `Chip_8` should have an upper camel case name
[INFO] [stderr]   --> src/chip.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub struct Chip_8 {
[INFO] [stderr]    |            ^^^^^^ help: convert the identifier to upper camel case: `Chip8`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/chip.rs:181:9
[INFO] [stderr]     |
[INFO] [stderr] 181 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_key_press`
[INFO] [stderr]   --> src/keyboard.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn add_key_press(&mut self, key: char){
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `CHIP_8` 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: `chip_8`
[INFO] [stderr] 
[INFO] [stderr] warning: function `doBeep` should have a snake case name
[INFO] [stderr]    --> src/chip.rs:191:4
[INFO] [stderr]     |
[INFO] [stderr] 191 | fn doBeep() {
[INFO] [stderr]     |    ^^^^^^ help: convert the identifier to snake case: `do_beep`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/main.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     Ok(())
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `raw`
[INFO] [stderr]   --> src/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let raw = RawScreen::into_raw_mode();
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_raw`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `terminal`
[INFO] [stderr]   --> src/main.rs:41:49
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn draw_graphics(graphics_buffer: &[u8; 64*32], terminal: &Terminal) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                                                 ^^^^^^^^ help: consider prefixing with an underscore: `_terminal`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]   --> src/keyboard.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn is_valid_key(c: char) -> bool {
[INFO] [stderr]    |                         ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_key_press`
[INFO] [stderr]   --> src/keyboard.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn add_key_press(&mut self, key: char){
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `CHIP_8` 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: `chip_8`
[INFO] [stderr] 
[INFO] [stderr] warning: function `doBeep` should have a snake case name
[INFO] [stderr]    --> src/chip.rs:191:4
[INFO] [stderr]     |
[INFO] [stderr] 191 | fn doBeep() {
[INFO] [stderr]     |    ^^^^^^ help: convert the identifier to snake case: `do_beep`
[INFO] [stderr] 
[INFO] [stderr] warning: function `execute_instruction_should_catchOpCode` should have a snake case name
[INFO] [stderr]    --> src/chip.rs:184:8
[INFO] [stderr]     |
[INFO] [stderr] 184 |     fn execute_instruction_should_catchOpCode() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `execute_instruction_should_catch_op_code`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `"docker" "inspect" "2d3a0af2f8ee6a7706dbfd0cce8149ff6854d98819631c8a48d93d46db2d6df5"`
[INFO] running `"docker" "rm" "-f" "2d3a0af2f8ee6a7706dbfd0cce8149ff6854d98819631c8a48d93d46db2d6df5"`
[INFO] [stdout] 2d3a0af2f8ee6a7706dbfd0cce8149ff6854d98819631c8a48d93d46db2d6df5