error: layout error: NormalizationFailure(<[E] as std::borrow::ToOwned>::Owned, Type(<[E] as std::borrow::ToOwned>::Owned))
  --> $DIR/issue-85103.rs:6:1
   |
LL | type Edges<'a, E> = Cow<'a, [E]>;
   | ^^^^^^^^^^^^^^^^^

error: aborting due to previous error