error: specialization impl does not specialize any associated items
  --> $DIR/specialize_nothing.rs:11:1
   |
LL | impl Special for usize {}
   | ^^^^^^^^^^^^^^^^^^^^^^
   |
note: impl is a specialization of this impl
  --> $DIR/specialize_nothing.rs:7:1
   |
LL | impl<T> Special for T {
   | ^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error