error[E0277]: the trait bound `(): Project` is not satisfied --> $DIR/bad-projection.rs:14:17 | LL | pub fn uwu() -> <() as Project>::Assoc {} | ^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()` | help: this trait has no implementations, consider adding one --> $DIR/bad-projection.rs:9:1 | LL | trait Project { | ^^^^^^^^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0277`.