error[E0700]: hidden type for `E<'b, 'c>` captures lifetime that does not appear in bounds
  --> $DIR/error-handling-2.rs:22:5
   |
LL | type E<'a, 'b> = impl Sized;
   |                  ---------- opaque type defined here
LL |
LL | fn foo<'a: 'b, 'b, 'c>(x: &'static i32, mut y: &'a i32) -> E<'b, 'c> {
   |        -- hidden type `*mut &'a i32` captures the lifetime `'a` as defined here
...
LL |     u.0
   |     ^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0700`.