| error[E0623]: lifetime mismatch | |
| --> $DIR/regions-creating-enums3.rs:7:5 | |
| | | |
| LL | fn mk_add_bad1<'a,'b>(x: &'a Ast<'a>, y: &'b Ast<'b>) -> Ast<'a> { | |
| | ----------- ------- | |
| | | | |
| | this parameter and the return type are declared with different lifetimes... | |
| LL | Ast::Add(x, y) | |
| | ^^^^^^^^^^^^^^ ...but data from `y` is returned here | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0623`. |