error: contract annotations is only supported in functions with bodies
  --> $DIR/contract-annotation-limitations.rs:17:5
   |
LL |     #[core::contracts::ensures(|ret| ret.is_none_or(Stars::is_valid))]
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: contract annotations is only supported in functions with bodies
  --> $DIR/contract-annotation-limitations.rs:21:5
   |
LL |     #[core::contracts::ensures(|ret| ret.is_none_or(Stars::is_valid))]
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors