[INFO] updating cached repository gbrls/Chip8-Emulator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/gbrls/Chip8-Emulator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/gbrls/Chip8-Emulator" "work/ex/beta-1.38-1/sources/1.37.0/gh/gbrls/Chip8-Emulator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/gbrls/Chip8-Emulator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gbrls/Chip8-Emulator" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gbrls/Chip8-Emulator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gbrls/Chip8-Emulator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7edd01ff73b2b86f0a4f2f41b455f804583cdcfd
[INFO] sha for GitHub repo gbrls/Chip8-Emulator: 7edd01ff73b2b86f0a4f2f41b455f804583cdcfd
[INFO] validating manifest of gbrls/Chip8-Emulator on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gbrls/Chip8-Emulator on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gbrls/Chip8-Emulator
[INFO] finished frobbing gbrls/Chip8-Emulator
[INFO] frobbed toml for gbrls/Chip8-Emulator written to work/ex/beta-1.38-1/sources/1.37.0/gh/gbrls/Chip8-Emulator/Cargo.toml
[INFO] started frobbing gbrls/Chip8-Emulator
[INFO] finished frobbing gbrls/Chip8-Emulator
[INFO] frobbed toml for gbrls/Chip8-Emulator written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/gbrls/Chip8-Emulator/Cargo.toml
[INFO] crate gbrls/Chip8-Emulator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing gbrls/Chip8-Emulator against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gbrls/Chip8-Emulator:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] c50a15aa6b9533e34c66289798fbc05d6f2e2aaf1ca5dfd0f6ff8370f3948953
[INFO] running `"docker" "start" "-a" "c50a15aa6b9533e34c66289798fbc05d6f2e2aaf1ca5dfd0f6ff8370f3948953"`
[INFO] [stderr]    Compiling x11-dl v2.14.0
[INFO] [stderr]    Compiling minifb v0.11.2
[INFO] [stderr]    Compiling chip-8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/main.rs:6:11
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::{thread, time};
[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:441:24
[INFO] [stderr]     |
[INFO] [stderr] 441 |                     if (self.key_state[self.V[reg] as usize] == 1) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/main.rs:450:24
[INFO] [stderr]     |
[INFO] [stderr] 450 |                     if (self.key_state[self.V[reg] as usize] == 0) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/main.rs:475:34
[INFO] [stderr]     |
[INFO] [stderr] 475 |                     self.delay = (self.mem[self.pc] & 0x0f);
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/main.rs:481:34
[INFO] [stderr]     |
[INFO] [stderr] 481 |                     self.sound = (self.mem[self.pc] & 0x0f);
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |         self.pc += 2;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:147:17
[INFO] [stderr]     |
[INFO] [stderr] 147 |                 x => {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:288:29
[INFO] [stderr]     |
[INFO] [stderr] 288 |                             x => 1,
[INFO] [stderr]     |                             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:355:21
[INFO] [stderr]     |
[INFO] [stderr] 355 |                     x => {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:456:17
[INFO] [stderr]     |
[INFO] [stderr] 456 |                 x => {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:556:17
[INFO] [stderr]     |
[INFO] [stderr] 556 |                 x => {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `FONT_SIZE`
[INFO] [stderr]   --> src/main.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | const FONT_SIZE: usize = 5 * 16;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `disassemble_chip8`
[INFO] [stderr]    --> src/main.rs:571:5
[INFO] [stderr]     |
[INFO] [stderr] 571 |     fn disassemble_chip8(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `I` should have a snake case name
[INFO] [stderr]   --> src/main.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     I: u16,
[INFO] [stderr]    |     ^ help: convert the identifier to snake case: `i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     V: [u8; 17],
[INFO] [stderr]    |     ^ help: convert the identifier to snake case: `v`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.91s
[INFO] running `"docker" "inspect" "c50a15aa6b9533e34c66289798fbc05d6f2e2aaf1ca5dfd0f6ff8370f3948953"`
[INFO] running `"docker" "rm" "-f" "c50a15aa6b9533e34c66289798fbc05d6f2e2aaf1ca5dfd0f6ff8370f3948953"`
[INFO] [stdout] c50a15aa6b9533e34c66289798fbc05d6f2e2aaf1ca5dfd0f6ff8370f3948953
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gbrls/Chip8-Emulator:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8d0514d74dd983a5efdf013fe8b22b92c22cb39130a35c39b71e3d4ccf00f12c
[INFO] running `"docker" "start" "-a" "8d0514d74dd983a5efdf013fe8b22b92c22cb39130a35c39b71e3d4ccf00f12c"`
[INFO] [stderr]    Compiling chip-8 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/main.rs:6:11
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::{thread, time};
[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:441:24
[INFO] [stderr]     |
[INFO] [stderr] 441 |                     if (self.key_state[self.V[reg] as usize] == 1) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/main.rs:450:24
[INFO] [stderr]     |
[INFO] [stderr] 450 |                     if (self.key_state[self.V[reg] as usize] == 0) {
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/main.rs:475:34
[INFO] [stderr]     |
[INFO] [stderr] 475 |                     self.delay = (self.mem[self.pc] & 0x0f);
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]    --> src/main.rs:481:34
[INFO] [stderr]     |
[INFO] [stderr] 481 |                     self.sound = (self.mem[self.pc] & 0x0f);
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |         self.pc += 2;
[INFO] [stderr]    |         ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unreachable_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:147:17
[INFO] [stderr]     |
[INFO] [stderr] 147 |                 x => {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:288:29
[INFO] [stderr]     |
[INFO] [stderr] 288 |                             x => 1,
[INFO] [stderr]     |                             ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:355:21
[INFO] [stderr]     |
[INFO] [stderr] 355 |                     x => {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:456:17
[INFO] [stderr]     |
[INFO] [stderr] 456 |                 x => {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/main.rs:556:17
[INFO] [stderr]     |
[INFO] [stderr] 556 |                 x => {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `FONT_SIZE`
[INFO] [stderr]   --> src/main.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | const FONT_SIZE: usize = 5 * 16;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `disassemble_chip8`
[INFO] [stderr]    --> src/main.rs:571:5
[INFO] [stderr]     |
[INFO] [stderr] 571 |     fn disassemble_chip8(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `I` should have a snake case name
[INFO] [stderr]   --> src/main.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     I: u16,
[INFO] [stderr]    |     ^ help: convert the identifier to snake case: `i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `V` should have a snake case name
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     V: [u8; 17],
[INFO] [stderr]    |     ^ help: convert the identifier to snake case: `v`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "8d0514d74dd983a5efdf013fe8b22b92c22cb39130a35c39b71e3d4ccf00f12c"`
[INFO] running `"docker" "rm" "-f" "8d0514d74dd983a5efdf013fe8b22b92c22cb39130a35c39b71e3d4ccf00f12c"`
[INFO] [stdout] 8d0514d74dd983a5efdf013fe8b22b92c22cb39130a35c39b71e3d4ccf00f12c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/gbrls/Chip8-Emulator:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] e5889c38a0e3f2356ca269b785e40e2764ad610a1bb8f2d095943009ccc35a72
[INFO] running `"docker" "start" "-a" "e5889c38a0e3f2356ca269b785e40e2764ad610a1bb8f2d095943009ccc35a72"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/chip_8-ca1d11a8103ed5ba
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e5889c38a0e3f2356ca269b785e40e2764ad610a1bb8f2d095943009ccc35a72"`
[INFO] running `"docker" "rm" "-f" "e5889c38a0e3f2356ca269b785e40e2764ad610a1bb8f2d095943009ccc35a72"`
[INFO] [stdout] e5889c38a0e3f2356ca269b785e40e2764ad610a1bb8f2d095943009ccc35a72