Lifetime parameters on functions cause `thunderclap` attribute to panic

[Pzixel]

For example, it's not clear how to run app with more than one parameter:

/// App
#[thunderclap]
impl App {
    /// run
    fn run<'a, 'b>(token: &'a str, listening_address: &'b str) {
        println!("Hello {}, my address is {}", token, listening_address);
    }
}

error[E0599]: no function or associated item named `run` found for type `clap::App<'_, '_>` in the current scope
  --> src\main.rs:28:1
   |
28 | #[thunderclap]
   | ^^^^^^^^^^^^^^ function or associated item not found in `clap::App<'_, '_>`

error: aborting due to previous error

[spacekookie]

Hey, you don't need to specify the lifetime parameters on that function. If you look at the thor example you'll see that the hello function takes a name: &str but because it is never returned from that function the lifetime is very clear.

I'll rename this issue because this is a bug in how thunder parses user code and I think it can't handle lifetime parameters on functions and there should be at least some sort of error message that is more helpful to the user.

[Pzixel]

@spacekookie i thought you cannot not specify lifetime parameters because they lifetimes cannot be elised. Sorry, the error message misled me.