| warning: method `dummy` is never used | |
| --> $DIR/issue-20055-box-trait.rs:11:8 | |
| | | |
| LL | trait Boo { | |
| | --- method in this trait | |
| LL | fn dummy(&self) { } | |
| | ^^^^^ | |
| | | |
| = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default | |
| warning: 1 warning emitted | |