src/test/ui/lifetimes/lifetime-errors/ex3-both-anon-regions.nll.stderr

   1 error: lifetime may not live long enough
   2   --> $DIR/ex3-both-anon-regions.rs:2:5
   3    |
   4 LL | fn foo(x: &mut Vec<&u8>, y: &u8) {
   5    |                    -        - let's call the lifetime of this reference `'1`
   6    |                    |
   7    |                    let's call the lifetime of this reference `'2`
   8 LL |     x.push(y);
   9    |     ^^^^^^^^^ argument requires that `'1` must outlive `'2`
  10    |
  11 help: consider introducing a named lifetime parameter
  12    |
  13 LL | fn foo<'a>(x: &mut Vec<&'a u8>, y: &'a u8) {
  14    |       ++++              ++          ++
  15
  16 error: aborting due to previous error
  17