I created an executable Swift package and when I do a simple HTTP request such as: func request() {     let url = URL(string: "https://httpbin.org/get")!     let task = URLSession.shared.dataTask(with: url) { (data, response, error) in print("Test") // Never executed         if let error = error {             print("error: \(error)")         } else {             if let response = response as? HTTPURLResponse {                 print("statusCode: \(response.statusCode)")             }             if let data = data, let dataString = String(data: data, encoding: .utf8) {                 print("data: \(dataString)")             }         }     }     task.resume() } request() It simply does not execute the code inside of dataTask.