src/test/ui/span/E0046.stderr

   1 error[E0046]: not all trait items implemented, missing: `foo`
   2   --> $DIR/E0046.rs:18:1
   3    |
   4 12 |     fn foo();
   5    |     --------- `foo` from trait
   6 ...
   7 18 | impl Foo for Bar {}
   8    | ^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation
   9
  10 error: aborting due to previous error(s)
  11