You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: async_not_working.rs
    path of file: ./repos/Rust-Full-Stack/selenium/login/src
    
    the code of the file until where you have to start completion: use thirtyfour::prelude::*;
use tokio;

// Xpaths

// Username, //*[@id="loginUsername"]
// Password, //*[@id="loginPassword"]
// Sign In, /html/body/div/div/div
    
async fn main() -> WebDriverResult<()> {
     let caps = DesiredCapabilities::chrome();
     let driver = WebDriver::new("http://localhost:4444", &caps).await?;

     driver.get("https://www.reddit.com/login").await?;
     // let elem_form = driver.find_element(By::Id("search-form")).await?;

     // // Find element from element.
     // let elem_text = elem_form.find_element(By::Id("searchInput")).await?;

     // // Type in the search terms.
     // elem_text.send_keys("selenium").await?;

     // // Click the search button.
     // let elem_button = elem_form.find_element(By::Css("button[type='submit']")).await?;
     // elem_button.click().await?;

     // // Look for header to implicitly wait for the page to load.
     // driver.find_element(By::ClassName("firstHeading")).await?;
     // assert_eq!(driver.title().await?, "Selenium - Wikipedia");

     Ok(())
}