error[E0277]: the trait bound `MyActor: Handler<MyMessage>` is not satisfied
 --> $DIR/missing_handler.rs:6:10
  |
6 | #[derive(Actor)]
  |          ^^^^^ the trait `Handler<MyMessage>` is not implemented for `MyActor`
  |
 ::: $WORKSPACE/src/actor.rs
  |
  | pub trait Actor: Sized + HandlesList<<Self as Actor>::Handles> {
  |                          ------------------------------------- required by this bound in `yaaf::Actor`
  |
  = note: required because of the requirements on the impl of `yaaf::handler::detail::HandlesList<(MyMessage,)>` for `MyActor`
  = note: this error originates in a derive macro (in Nightly builds, run with -Z macro-backtrace for more info)