error[E0200]: the trait `Copy` requires an `unsafe impl` declaration
  --> $DIR/copy-trait.rs:21:5
   |
LL |     impl Copy for UnsafeEnum {}
   |     ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: the trait `Copy` cannot be safely implemented for `bad_safe_impl::UnsafeEnum` because it has unsafe fields. Review the invariants of those fields before adding an `unsafe impl`
help: add `unsafe` to this trait implementation
   |
LL |     unsafe impl Copy for UnsafeEnum {}
   |     ++++++

error[E0199]: implementing the trait `Copy` is not unsafe
  --> $DIR/copy-trait.rs:39:5
   |
LL |     unsafe impl Copy for SafeEnum {}
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
help: remove `unsafe` from this trait implementation
   |
LL -     unsafe impl Copy for SafeEnum {}
LL +     impl Copy for SafeEnum {}
   |

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0199, E0200.
For more information about an error, try `rustc --explain E0199`.