error: the `function` method cannot be invoked on a trait object
  --> $DIR/regular.rs:28:41
   |
LL |         Self: Sized;
   |               ----- this has a `Sized` requirement
...
LL |     (&mut MutType as &mut dyn MutTrait).function();
   |                                         ^^^^^^^^

error: the `function` method cannot be invoked on a trait object
  --> $DIR/regular.rs:30:27
   |
LL |         Self: Sized;
   |               ----- this has a `Sized` requirement
...
LL |     (&Type as &dyn Trait).function();
   |                           ^^^^^^^^

error: aborting due to 2 previous errors