I'm not sure if I'm doing something wrong or there's a bug.
One issue is that I have 1 task that has 4 dependencies. When the dependencies fail, the task handler is still called. My understanding is that the taskHandler shouldn't be called until all its dependencies have been completed without an error. However, that's not the case.
Next, if a task fails, it's still removed from the serializer. This shouldn't be the case because it means you can't replay failed tasks at a later time. One they fail, they're gone forever.