rust-cookbook | https : //rust-lang-nursery.github.io/rust-cookbook | DevOps library

You need to enable an extra feature in tokio to be able to use tokio::main.

Try adding the full feature to the tokio dependency in your Cargo.toml file:

Replacing

If you click the "expand" button in the top-right corner of the snippet, you'll see that there are bits which are hidden by default:

reqwest::get returns a Result, then with the ? you are unwrapping the Result, meaning you now have a Response object as documented here. And because a web call can successfully occur but still fail (see HTTP non 200 codes) you should check the response code, but since this is to learn we'll ignore it. What you want is a struct that implements the std::io::Read trait, reading up on that shows that String implements that trait. Going back to reqwest::Response shows that we can get the string returned using the method text(). So your code now becomes