error[E0432]: unresolved import `self::Self`
  --> $DIR/self_type_keyword-2.rs:11:5
   |
LL | use self::Self as Foo; //~ ERROR unresolved import `self::Self`
   |     ^^^^^^^^^^^^^^^^^ no `Self` in the root

error[E0531]: cannot find unit struct/variant or constant `Self` in this scope
  --> $DIR/self_type_keyword-2.rs:14:9
   |
LL |     let Self = 5;
   |         ^^^^ not found in this scope

error[E0531]: cannot find unit struct/variant or constant `Self` in this scope
  --> $DIR/self_type_keyword-2.rs:19:9
   |
LL |         Self => (),
   |         ^^^^ not found in this scope

error[E0531]: cannot find unit struct/variant or constant `Self` in this scope
  --> $DIR/self_type_keyword-2.rs:22:18
   |
LL |         Foo { x: Self } => (),
   |                  ^^^^ not found in this scope

error[E0658]: `Self` struct constructors are unstable (see issue #51994)
  --> $DIR/self_type_keyword-2.rs:14:9
   |
LL |     let Self = 5;
   |         ^^^^
   |
   = help: add #![feature(self_struct_ctor)] to the crate attributes to enable

error[E0658]: `Self` struct constructors are unstable (see issue #51994)
  --> $DIR/self_type_keyword-2.rs:19:9
   |
LL |         Self => (),
   |         ^^^^
   |
   = help: add #![feature(self_struct_ctor)] to the crate attributes to enable

error[E0658]: `Self` struct constructors are unstable (see issue #51994)
  --> $DIR/self_type_keyword-2.rs:22:18
   |
LL |         Foo { x: Self } => (),
   |                  ^^^^
   |
   = help: add #![feature(self_struct_ctor)] to the crate attributes to enable

error: aborting due to 7 previous errors

Some errors occurred: E0432, E0531, E0658.
For more information about an error, try `rustc --explain E0432`.