error[E0275]: overflow evaluating the requirement `String: Copy`
  --> $DIR/alias-bound-unsound.rs:18:38
   |
LL |     type Item = String where String: Copy;
   |                                      ^^^^
   |
note: the requirement `String: Copy` appears on the `impl`'s associated type `Item` but not on the corresponding trait's associated type
  --> $DIR/alias-bound-unsound.rs:8:10
   |
LL | trait Foo {
   |       --- in this trait
LL |     type Item: Copy
   |          ^^^^ this trait's associated type doesn't have the requirement `String: Copy`

error[E0275]: overflow evaluating the requirement `String <: <() as Foo>::Item`
  --> $DIR/alias-bound-unsound.rs:24:31
   |
LL |     drop(<() as Foo>::copy_me(&x));
   |                               ^^

error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
  --> $DIR/alias-bound-unsound.rs:24:10
   |
LL |     drop(<() as Foo>::copy_me(&x));
   |          ^^^^^^^^^^^^^^^^^^^^^^^^

error[E0275]: overflow evaluating the requirement `&<() as Foo>::Item well-formed`
  --> $DIR/alias-bound-unsound.rs:24:31
   |
LL |     drop(<() as Foo>::copy_me(&x));
   |                               ^^

error[E0275]: overflow evaluating the requirement `<() as Foo>::Item well-formed`
  --> $DIR/alias-bound-unsound.rs:24:10
   |
LL |     drop(<() as Foo>::copy_me(&x));
   |          ^^^^^^^^^^^^^^^^^^^^^^^^

error[E0275]: overflow evaluating the requirement `<() as Foo>::Item == _`
  --> $DIR/alias-bound-unsound.rs:24:10
   |
LL |     drop(<() as Foo>::copy_me(&x));
   |          ^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error: aborting due to 6 previous errors

For more information about this error, try `rustc --explain E0275`.