src/test/ui/impl-trait/needs_least_region_or_bound.stderr

error: ambiguous lifetime bound in `impl Trait`
  --> $DIR/needs_least_region_or_bound.rs:6:55
   |
LL | fn no_least_region<'a, 'b>(x: &'a u32, y: &'b u32) -> impl MultiRegionTrait<'a, 'b> {
   |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ neither `'a` nor `'b` outlives the other

error: aborting due to previous error