impl std::error::Error for StatusCode

[fakeshadow]

Sometimes I want to use status code as an error type like following:

fn method_guard(req: &Request<()>) -> Result<(), Box<dyn std::error::Error>> {
    if req.method() != Method::GET {
        return Err(Box::new(StatusCode::METHOD_NOT_ALLOWED));
    }
    Ok(())
}

Using a new type could resolve the issue but it's an inconvenience for library code where ideally I want to re-export http types as much as possible.

[seanmonstar]

Hm, but StatusCode::OK isn't an error.

You'd be better off using a custom type.