error[E0277]: the trait bound `Bar<T>: Foo` is not satisfied
  --> $DIR/issue-64855.rs:9:19
   |
LL | pub struct Bar<T>(<Self as Foo>::Type) where Self: ;
   |                   ^^^^^^^^^^^^^^^^^^^ unsatisfied trait bound
   |
help: the trait `Foo` is not implemented for `Bar<T>`
  --> $DIR/issue-64855.rs:9:1
   |
LL | pub struct Bar<T>(<Self as Foo>::Type) where Self: ;
   | ^^^^^^^^^^^^^^^^^
help: this trait has no implementations, consider adding one
  --> $DIR/issue-64855.rs:5:1
   |
LL | pub trait Foo {
   | ^^^^^^^^^^^^^

error[E0275]: overflow evaluating the requirement `Bar<T> well-formed`
  --> $DIR/issue-64855.rs:9:46
   |
LL | pub struct Bar<T>(<Self as Foo>::Type) where Self: ;
   |                                              ^^^^
   |
note: required by a bound in `Bar`
  --> $DIR/issue-64855.rs:9:46
   |
LL | pub struct Bar<T>(<Self as Foo>::Type) where Self: ;
   |                                              ^^^^ required by this bound in `Bar`

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0275, E0277.
For more information about an error, try `rustc --explain E0275`.