| # Troubleshooting FAQ | |
| ### I see a warning "Variable `None` should have snake_case name, e.g. `none`" | |
| rust-analyzer fails to resolve `None`, and thinks you are binding to a variable | |
| named `None`. That's usually a sign of a corrupted sysroot. Try removing and re-installing | |
| it: `rustup component remove rust-src` then `rustup component install rust-src`. |