error[E0225]: only auto traits can be used as additional traits in a trait object
  --> $DIR/issue-32963.rs:8:25
   |
LL |     size_of_copy::<Misc+Copy>();
   |                         ^^^^ non-auto additional trait

error[E0277]: the trait bound `dyn Misc: std::marker::Copy` is not satisfied
  --> $DIR/issue-32963.rs:8:5
   |
LL |     size_of_copy::<Misc+Copy>();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `std::marker::Copy` is not implemented for `dyn Misc`
   |
note: required by `size_of_copy`
  --> $DIR/issue-32963.rs:5:1
   |
LL | fn size_of_copy<T: Copy+?Sized>() -> usize { mem::size_of::<T>() }
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

Some errors occurred: E0225, E0277.
For more information about an error, try `rustc --explain E0225`.