error[E0382]: use of moved value: `debug_dump_dict`
  --> $DIR/fn_once-moved.rs:21:5
   |
20 |     debug_dump_dict();
   |     --------------- value moved here
21 |     debug_dump_dict();
   |     ^^^^^^^^^^^^^^^ value used here after move
   |
   = help: closure was moved because it only implements `FnOnce`

error: aborting due to previous error