warning: not reporting region error due to -Znll
  --> $DIR/impl-trait-captures.rs:22:5
   |
22 |     x
   |     ^

error[E0621]: explicit lifetime required in the type of `x`
  --> $DIR/impl-trait-captures.rs:22:5
   |
21 | fn foo<'a, T>(x: &T) -> impl Foo<'a> {
   |               - consider changing the type of `x` to `&ReEarlyBound(0, 'a) T`
22 |     x
   |     ^ lifetime `ReEarlyBound(0, 'a)` required

error: aborting due to previous error