#![feature(type_alias_impl_trait)] doesn't work in rust analyzer, but compiles fine

[K4rakara]

rust-analyzer version: rust-analyzer 1.64.0-nightly (5342f47 2022-07-09)
rustc version: rustc 1.64.0-nightly (87588a2af 2022-07-13)

The following causes an error in rust-analyzer but not when compiling with cargo:

#![feature(type_alias_impl_trait)]

pub trait Foo {
    type Output: Future<Output = ()>;
    fn foo(&self) -> Self::Output;
}

struct Type;

impl Foo for Type {
    type Output = impl Future<Output = ()>; // Also doesn't work (in rust-analyzer) if you move this type outside of the impl with an alias.
    fn foo(&self) -> Self::Output {
        async { } // Error: type mismatch, expected {unknown}, got impl Future<Output = ()>
    }
}

Apologies if this is a duplicate of #9673, I was unsure if they were related or not.

[K4rakara]

Aaaaaand it stopped happening