error: `PointeeSized` cannot be used with trait objects
  --> $DIR/reject-dyn-pointeesized.rs:5:12
   |
LL | type Foo = dyn PointeeSized;
   |            ^^^^^^^^^^^^^^^^

error: `PointeeSized` cannot be used with trait objects
  --> $DIR/reject-dyn-pointeesized.rs:14:16
   |
LL |     let y: Box<dyn PointeeSized> = x;
   |                ^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors