I can't figure out why this error is occurring as I have annotated the error both in the definition and usage. As a result I can't find a solution. Help? Mostly I'd like to know why it's required. It doesn't feel like it should be.
function definition: async fn token_check() -> Result<TokenResponse, (std::io::ErrorKind,String)>
returned item: Err((std::io::ErrorKind::Other, "invalid request type"))
error: "type annotations needed cannot infer type of the type parameter `T` declared on the enum `Result`"
It is returning an Ok type that is listed in the function definition listed. The Error type returned is a Tuple of an ErrorKind and a String. This is because you can't clone an Error and I currently have a need to clone an Error elsewhere.
Anyway, the types are in in the function definition and it's complaining about an error returned.
That said, I found my incorrect code while researching your response in my code.
I added the return keyword and I was not returning the correct tuple. I defined the function with a String and I was returning an &str. So adding .to_string() and the return keyword.
Problem is resolved. Thank you both!