error[E0277]: the trait bound `(): ~const Tr` is not satisfied --> $DIR/default-method-body-is-const-same-trait-ck.rs:8:12 | LL | ().a() | ^ the trait `Tr` is not implemented for `()` | = help: the trait `Tr` is implemented for `()` error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.