1 error: unsatisfied lifetime constraints
2 --> $DIR/ex3-both-anon-regions-using-impl-items.rs:15:9
4 LL | fn foo(x: &mut Vec<&u8>, y: &u8) {
5 | - - let's call the lifetime of this reference `'1`
7 | let's call the lifetime of this reference `'2`
8 LL | x.push(y); //~ ERROR lifetime mismatch
9 | ^^^^^^^^^ argument requires that `'1` must outlive `'2`
11 error: aborting due to previous error