Cannot handle big json

[RoxasShadow]

let url = format!("http://ws.audioscrobbler.com/2.0/?method=artist.getevents&artist=nightwish&api_key=572b13444704f89c67b07a713d5e5de1&format=json");

let mut res = client.get(&url)
  .header(Connection::close())
  .send().unwrap();

let mut body = String::new();
res.read_to_string(&mut body).unwrap();
println!("{}", body);

The output is a big and cutted json string.