warning: the feature `impl_trait_in_bindings` is incomplete and may not be safe to use and/or cause compiler crashes
  --> $DIR/cannot-infer-async-enabled-impl-trait-bindings.rs:2:12
   |
LL | #![feature(impl_trait_in_bindings)]
   |            ^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(incomplete_features)]` on by default
   = note: see issue #63065 <https://github.com/rust-lang/rust/issues/63065> for more information

error[E0282]: type annotations needed for `impl Future`
  --> $DIR/cannot-infer-async-enabled-impl-trait-bindings.rs:13:20
   |
LL |     let fut = async {
   |         --- consider giving `fut` the explicit type `impl Future`, with the type parameters specified
LL |         make_unit()?;
   |                    ^ cannot infer type of error for `?` operator
   |
   = note: `?` implicitly converts the error value into a type implementing `From<std::io::Error>`

error: aborting due to previous error; 1 warning emitted

For more information about this error, try `rustc --explain E0282`.