1 error: unsatisfied lifetime constraints
2 --> $DIR/ex3-both-anon-regions-one-is-struct-3.rs:14:5
4 LL | fn foo(mut y: Ref, x: &u32) {
5 | ----- - let's call the lifetime of this reference `'1`
7 | has type `Ref<'_, '2>`
8 LL | y.b = x; //~ ERROR lifetime mismatch
9 | ^^^^^^^ assignment requires that `'1` must outlive `'2`
11 error: aborting due to previous error