error[E0308]: mismatched types
  --> $DIR/suggest-missing-await-closure.rs:16:18
   |
LL |         take_u32(x)
   |         -------- ^ expected `u32`, found future
   |         |
   |         arguments to this function are incorrect
   |
note: calling an async function returns a future
  --> $DIR/suggest-missing-await-closure.rs:16:18
   |
LL |         take_u32(x)
   |                  ^
note: function defined here
  --> $DIR/suggest-missing-await-closure.rs:6:4
   |
LL | fn take_u32(_x: u32) {}
   |    ^^^^^^^^ -------
help: consider `await`ing on the `Future`
   |
LL |         take_u32(x.await)
   |                   ++++++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0308`.