message: list devices after creation
diff: @@ -8,6 +8,7 @@ mod tests {
  // Create a unique iOS device
  delete_existing_device();
  create_ios_device();
  + list_devices();
  // Tets the 'DylibExample' scheme
  let success = run_ios_test("DylibExample/DylibExample.xcodeproj", "DylibExample");
  @@ -45,6 +46,17 @@ mod tests {
  return success;
  }
  + fn list_devices() -> Output {
  + Command::new("xcrun")
  + .arg("simctl")
  + .arg("list")
  + .arg("devices")
  + .stdout(Stdio::inherit())
  + .stderr(Stdio::inherit())
  + .output()
  + .expect("Could not list iOS devices")
  + }
  +
  fn create_ios_device() -> Output {
  Command::new("xcrun")
  .arg("simctl")
  