| #![feature(register_tool)] | |
| // Registering predefined tool is okay. | |
| #![register_tool(clippy)] | |
| #![register_attribute_tool(miri)] | |
| #![register_lint_tool(rustfmt)] | |
| #![register_tool(diagnostic)] | |
| #![register_attribute_tool(rust_analyzer)] | |
| // Registering "rustc" is an error. | |
| #![register_tool(rustc)] //~ ERROR reserved | |
| fn main() {} |