[INFO] updating cached repository https://github.com/Krystex/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] 55c126bb77a58276dccc1d4c5c57a4bd8670aa96
[INFO] checking Krystex/Chip-8 against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FKrystex%2FChip-8" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Krystex/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/Krystex/Chip-8
[INFO] finished tweaking git repo https://github.com/Krystex/Chip-8
[INFO] tweaked toml for git repo https://github.com/Krystex/Chip-8 written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Krystex/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-3/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-3/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] 8bf11f45396384416ed94bca5533c3bcee7e532e0acca72cb46549b130362209
[INFO] running `"docker" "start" "-a" "8bf11f45396384416ed94bca5533c3bcee7e532e0acca72cb46549b130362209"`
[INFO] [stderr]     Checking chip-8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:87:3
[INFO] [stderr]    |
[INFO] [stderr] 87 |         return 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/main.rs:87:3
[INFO] [stderr]    |
[INFO] [stderr] 87 |         return 0;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:379:11
[INFO] [stderr]     |
[INFO] [stderr] 379 |             Shr(x, y) => {
[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: `val`
[INFO] [stderr]    --> src/main.rs:390:10
[INFO] [stderr]     |
[INFO] [stderr] 390 |                 let (val, overflowing) = (*self.reg(x)).overflowing_sub(*self.reg(y));
[INFO] [stderr]     |                      ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/main.rs:379:11
[INFO] [stderr]     |
[INFO] [stderr] 379 |             Shr(x, y) => {
[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: `val`
[INFO] [stderr]    --> src/main.rs:390:10
[INFO] [stderr]     |
[INFO] [stderr] 390 |                 let (val, overflowing) = (*self.reg(x)).overflowing_sub(*self.reg(y));
[INFO] [stderr]     |                      ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `"docker" "inspect" "8bf11f45396384416ed94bca5533c3bcee7e532e0acca72cb46549b130362209"`
[INFO] running `"docker" "rm" "-f" "8bf11f45396384416ed94bca5533c3bcee7e532e0acca72cb46549b130362209"`
[INFO] [stdout] 8bf11f45396384416ed94bca5533c3bcee7e532e0acca72cb46549b130362209