| error[E0277]: `main` has invalid return type `impl std::marker::Copy` | |
| --> $DIR/termination-trait-impl-trait.rs:2:14 | |
| | | |
| LL | fn main() -> impl Copy { } | |
| | ^^^^^^^^^ `main` can only return types that implement `std::process::Termination` | |
| | | |
| = help: consider using `()`, or a `Result` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0277`. |