| error: lifetime may not live long enough | |
| --> $DIR/regions-creating-enums4.rs:7:5 | |
| | | |
| LL | fn mk_add_bad2<'a,'b>(x: &'a Ast<'a>, y: &'a Ast<'a>, z: &Ast) -> Ast<'b> { | |
| | -- -- lifetime `'b` defined here | |
| | | | |
| | lifetime `'a` defined here | |
| LL | Ast::Add(x, y) | |
| | ^^^^^^^^^^^^^^ returning this value requires that `'a` must outlive `'b` | |
| | | |
| = help: consider adding the following bound: `'a: 'b` | |
| error: aborting due to previous error | |