warning: method `get` is never used
  --> $DIR/drop-struct-as-object.rs:18:8
   |
LL | trait Dummy {
   |       ----- method in this trait
LL |     fn get(&self) -> usize;
   |        ^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: 1 warning emitted