Attempting to run an async fn after completion mentions generators #65419
Description
If a user attempts to do something like this (playground including trivial executor):
async fn foo() { } fn main() { let mut future = Box::pin(foo()); executor::block_on(future.as_mut()); executor::block_on(future.as_mut()); }they get a panic talking about generators:
thread 'main' panicked at 'generator resumed after completion', src/main.rs:1:16 This issue has been assigned to @ninjasource via this comment.