error: cannot define duplicate `where` clauses on an item
  --> $DIR/duplicate-where-clause.rs:9:9
   |
LL |         P: Copy
   |         - previous `where` clause starts here
LL |     where
LL |         P: Eq;
   |         ^
   |
help: consider joining the two `where` clauses into one
   |
LL -         P: Copy
LL -     where
LL +         P: Copy,
   |

error: where clauses are not allowed before const item bodies
  --> $DIR/duplicate-where-clause.rs:19:5
   |
LL |       const K: ()
   |             - while parsing this const item
LL | /     where
LL | |         P: Eq
   | |_____________^ unexpected where clause
LL |       = ()
   |         -- the item body

error: aborting due to 2 previous errors