Swift TaskGroup swallows errors if you use it for fire-and-forget tasks (i.e. you never await the child tasks)

TaskGroupFireAndForget.swift

struct MyError: Error {}

func fireAndForget() async {
    await withThrowingTaskGroup(of: Void.self) { group in
        group.addTask {
            print("child task start")
            print("child task throws")
            throw MyError()
        }
        // Notice that we're not awaiting the child task.
        // The task group swallows the child task's error
        // without propagating it up.
    }
}

await fireAndForget()