[minor] Fewer warnings

src/bin/dummy.rs

@@ -0,0 +1,17 @@
+use my_tasks::client::Client;
+use my_tasks::settings::URL;
+use my_tasks::settings::USERNAME;
+use my_tasks::settings::PASSWORD;
+
+
+#[tokio::main]
+async fn main() {
+    // This is just a function to silence "unused function" warning
+
+    let mut client = Client::new(URL, USERNAME, PASSWORD).unwrap();
+    let calendars = client.get_calendars().await.unwrap();
+    let _ = calendars.iter()
+        .map(|cal| println!("  {}\t{}", cal.name(), cal.url().as_str()))
+        .collect::<()>();
+    let _ = client.get_tasks(&calendars[3].url()).await;
+}