A yield
clause was used in an async
context.
Example of erroneous code:
#![feature(generators)] fn main() { let generator = || { async { yield; } }; }
Here, the yield
keyword is used in an async
block, which is not yet supported.
To fix this error, you have to move yield
out of the async
block:
#![feature(generators)] fn main() { let generator = || { yield; }; }