error: lifetime may not live long enough | |
--> $DIR/match-ref-mut-invariance.rs:10:9 | |
| | |
LL | impl<'b> S<'b> { | |
| -- lifetime `'b` defined here | |
LL | fn bar<'a>(&'a mut self) -> &'a mut &'a i32 { | |
| -- lifetime `'a` defined here | |
LL | match self.0 { ref mut x => x } | |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'a` must outlive `'b` | |
| | |
= help: consider adding the following bound: `'a: 'b` | |
error: aborting due to previous error | |