error[E0515]: cannot return reference to temporary value
  --> $DIR/issue-30438-b.rs:13:9
   |
LL |         &Test { s: &self.s}
   |         ^------------------
   |         ||
   |         |temporary value created here
   |         returns a reference to data owned by the current function

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0515`.