[INFO] updating cached repository https://github.com/MelomanCool/chip-8-emulator-rust
[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] d9b2b91f82929e8f86ee093bb97a815f7bdc71fb
[INFO] checking MelomanCool/chip-8-emulator-rust against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FMelomanCool%2Fchip-8-emulator-rust" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MelomanCool/chip-8-emulator-rust 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/MelomanCool/chip-8-emulator-rust
[INFO] finished tweaking git repo https://github.com/MelomanCool/chip-8-emulator-rust
[INFO] tweaked toml for git repo https://github.com/MelomanCool/chip-8-emulator-rust written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/MelomanCool/chip-8-emulator-rust 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/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] bfa75ee0232d06dc6cf94576c52e55bd5e908005d0c9c28c07a07629c7421ff7
[INFO] running `"docker" "start" "-a" "bfa75ee0232d06dc6cf94576c52e55bd5e908005d0c9c28c07a07629c7421ff7"`
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand_pcg v0.2.0
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking chip8_emulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: field is never used: `delay_timer`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     delay_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sound_timer`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `keyboard`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     keyboard: Vec<bool>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `delay_timer`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     delay_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `sound_timer`
[INFO] [stderr]   --> src/main.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     sound_timer: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `keyboard`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     keyboard: Vec<bool>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.89s
[INFO] running `"docker" "inspect" "bfa75ee0232d06dc6cf94576c52e55bd5e908005d0c9c28c07a07629c7421ff7"`
[INFO] running `"docker" "rm" "-f" "bfa75ee0232d06dc6cf94576c52e55bd5e908005d0c9c28c07a07629c7421ff7"`
[INFO] [stdout] bfa75ee0232d06dc6cf94576c52e55bd5e908005d0c9c28c07a07629c7421ff7