Compiling futuretest v0.1.0 (file:///mnt/d/GIT/futuretest) error[E0271]: type mismatch resolving `, ()> as futures::Future>::Item == ()` --> src/main.rs:17:23 | 17 | fn create_future() -> impl Future { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found () | = note: expected type `std::result::Result<(), _>` found type `()` = note: the return type of a function must have a statically known size error: aborting due to previous error error: Could not compile `futuretest`. To learn more, run the command again with --verbose.