warning: methods `good_virt` and `good_indirect` are never used
  --> $DIR/manual-self-impl-for-unsafe-obj.rs:22:8
   |
LL | trait Good {
   |       ---- methods in this trait
LL |     fn good_virt(&self) -> char {
   |        ^^^^^^^^^
...
LL |     fn good_indirect(&self) -> char {
   |        ^^^^^^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: 1 warning emitted