[INFO] updating cached repository https://github.com/Hookzz/chip8_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] 600e55ad26e5d815111798c0e6ae616c7d96d25a
[INFO] checking Hookzz/chip8_rust against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHookzz%2Fchip8_rust" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hookzz/chip8_rust on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Hookzz/chip8_rust
[INFO] finished tweaking git repo https://github.com/Hookzz/chip8_rust
[INFO] tweaked toml for git repo https://github.com/Hookzz/chip8_rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Hookzz/chip8_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dff0e6b0a5d900885d7d20e25d1128b6b2246585ab0c963c39754c5552709dbd
[INFO] running `"docker" "start" "-a" "dff0e6b0a5d900885d7d20e25d1128b6b2246585ab0c963c39754c5552709dbd"`
[INFO] [stderr]     Checking chip8_emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0425]: cannot find value `vx` in this scope
[INFO] [stderr]   --> src/cpu.rs:75:7
[INFO] [stderr]    |
[INFO] [stderr] 75 |                         vx = self.write_reg_vx(x, y);
[INFO] [stderr]    |                         ^^ help: you might have meant to use the available field: `self.vx`
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find value `vx` in this scope
[INFO] [stderr]   --> src/cpu.rs:75:7
[INFO] [stderr]    |
[INFO] [stderr] 75 |                         vx = self.write_reg_vx(x, y);
[INFO] [stderr]    |                         ^^ help: you might have meant to use the available field: `self.vx`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `chip8_emu`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0425`.
[INFO] [stderr] error: could not compile `chip8_emu`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "dff0e6b0a5d900885d7d20e25d1128b6b2246585ab0c963c39754c5552709dbd"`
[INFO] running `"docker" "rm" "-f" "dff0e6b0a5d900885d7d20e25d1128b6b2246585ab0c963c39754c5552709dbd"`
[INFO] [stdout] dff0e6b0a5d900885d7d20e25d1128b6b2246585ab0c963c39754c5552709dbd