Unable to parse Args

[Matelasse]

Given the following line of code:
let arg1 = &args[1].parse::<String>().unwrap();
RA is unable to specify a correct inlay type hint for arg1.
RA thinks arg1 is of type &{unknown} and no helpful intellisense is being provided for it, even though it's easy to tell that arg1 is String

[Matelasse]

@matklad Sorry for tagging you, but do you know if this is expected? In hindsight, looks like this should already be addressed in the codebase. I'd appreciate insights on where to look for the fix

[flodiebold]

This is a duplicate of #2534. Sadly, it's not at all easy to tell the type of args[1] (for details, see that issue).