needless_doctest_main: false positive with proc-macro attribute

[jonhoo]

$ cargo clippy -V
clippy 0.0.212 (ea85b4c 2020-02-01)

The needless_doctest_main lint triggers on this code:

/// ```
/// #[tokio::main]
/// async fn main() {
///     // ...
/// }
/// ```

Where the fn main is very much not needless :)

[llogiq]

Do you mean the given code in a doctest? Or just the code without any docs?

[jonhoo]

Ah, sorry, yes, the code in a doctest -- will update.

[llogiq]

Thank you! This is just a matter of adding "async " to the list of terms that the lint checks against.

[jonhoo]

@llogiq 👍 Pushed fix in #5189.

[llogiq]

Thank you!