error[E0658]: type alias impl trait is not permitted here
  --> $DIR/metadata-sufficient-for-layout.rs:22:23
   |
LL | static A: Option<F> = None;
   |                       ^^^^
   |
   = note: see issue #63065 <https://github.com/rust-lang/rust/issues/63065> for more information
   = help: add `#![feature(impl_trait_in_bindings)]` to the crate attributes to enable

error: concrete type differs from previous defining opaque type use
  --> $DIR/metadata-sufficient-for-layout.rs:25:1
   |
LL | fn f() -> F { metadata_sufficient_for_layout::g() }
   | ^^^^^^^^^^^ expected `[type error]`, got `impl Generator`
   |
note: previous use here
  --> $DIR/metadata-sufficient-for-layout.rs:22:1
   |
LL | static A: Option<F> = None;
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0658`.