| error[E0277]: the trait bound `(): InOut<_>` is not satisfied | |
| --> $DIR/issue-25076.rs:10:20 | |
| | | |
| LL | fn do_fold<B, F: InOut<B, Out=B>>(init: B, f: F) {} | |
| | ------- --------------- required by this bound in `do_fold` | |
| ... | |
| LL | do_fold(bot(), ()); | |
| | ^^ the trait `InOut<_>` is not implemented for `()` | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0277`. |