Can `android.os.Handler.postDelayed` fail?

I would like to run a function periodically every 5 seconds in a foreground service. I use android.os.Handler.postDelayed for that, like this:

private Handler handler = new Handler();
private Runnable updater = new Runnable() {
    @Override
    public void run() {

        // Do some work

        scheduleTask();
    }
};

private void scheduleTask() {
    handler.postDelayed(updater, 5000);
}

@Override
public void onCreate() {
    super.onCreate();

    scheduleTask();
}

@Override
public void onDestroy() {
    super.onDestroy();

    handler.removeCallbacks(updater);
}

Is it possible for the handler.postDelayed to fail? Can the OS just cancel the delayed request? How to catch that? I need this to run stable for days.