warning: not reporting region error due to nll
  --> $DIR/impl-trait-captures.rs:21:5
   |
LL |     x
   |     ^

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

error: aborting due to previous error

For more information about this error, try `rustc --explain E0621`.