error[E0432]: unresolved import `self::Self`
  --> $DIR/self_type_keyword-2.rs:1:5
   |
LL | use self::Self as Foo;
   |     ^^^^^^^^^^^^^^^^^ no `Self` in the root

error[E0531]: cannot find unit struct, unit variant or constant `Self` in this scope
  --> $DIR/self_type_keyword-2.rs:4:9
   |
LL |     let Self = 5;
   |         ^^^^ not found in this scope

error[E0531]: cannot find unit struct, unit variant or constant `Self` in this scope
  --> $DIR/self_type_keyword-2.rs:8:9
   |
LL |         Self => (),
   |         ^^^^ not found in this scope

error[E0531]: cannot find unit struct, unit variant or constant `Self` in this scope
  --> $DIR/self_type_keyword-2.rs:10:18
   |
LL |         Foo { x: Self } => (),
   |                  ^^^^ not found in this scope

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0432, E0531.
For more information about an error, try `rustc --explain E0432`.