1 error: lifetime may not live long enough
2 --> $DIR/wf-self-type.rs:10:5
4 LL | pub fn foo<'a, 'b>(u: &'b ()) -> &'a () {
5 | -- -- lifetime `'b` defined here
7 | lifetime `'a` defined here
9 | ^^^^^^^^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
11 = help: consider adding the following bound: `'b: 'a`
13 error: aborting due to previous error