1 error: unsatisfied lifetime constraints
2 --> $DIR/ex3-both-anon-regions-both-are-structs-latebound-regions.rs:15:5
4 LL | fn foo<'a, 'b>(mut x: Vec<Ref<'a>>, y: Ref<'b>) {
5 | -- -- lifetime `'b` defined here
7 | lifetime `'a` defined here
8 LL | x.push(y); //~ ERROR lifetime mismatch
9 | ^^^^^^^^^ argument requires that `'b` must outlive `'a`
11 error: aborting due to previous error