message: debug on failed requests
diff: @@ -33,6 +33,9 @@ impl APIClient {
  }
  }.body(body);
  let text = req.send()?.text()?;
  - serde_json::from_str(&text).map_err(Error::from)
  + serde_json::from_str(&text).map_err(|e| {
  + println!("{}", text);
  + Error::from(e)
  + })
  }
  }
  