error: ambiguous lifetime bound in `impl Trait` | |
--> $DIR/feature-gate-member-constraints.rs:4:43 | |
| | |
LL | fn foo<'a, 'b>(x: &'a u32, y: &'b u32) -> impl Trait<'a, 'b> { | |
| ^^^^^^^^^^^^^^^^^^ neither `'a` nor `'b` outlives the other | |
| | |
= help: add #![feature(member_constraints)] to the crate attributes to enable | |
error: aborting due to previous error | |