error[E0599]: no associated item named `NotEvenReal` found for struct `Foo` in the current scope
  --> $DIR/E0599.rs:4:20
   |
LL | struct Foo;
   | ---------- associated item `NotEvenReal` not found for this struct
...
LL |     || if let Foo::NotEvenReal() = Foo {};
   |                    ^^^^^^^^^^^ associated item not found in `Foo`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0599`.