def post_tracer(self, obj, name, old, new, handler, exception=None):
        tracer = self._get_tracer()
        tracer.post_tracer(obj, name, old, new, handler, exception=exception)
For list, we don't want the full info on environments
dataset/ETHPy150Open enthought/traits/traits/util/event_tracer.py/MultiThreadChangeEventRecorder.post_tracer--crossover with--dataset/ETHPy150Open mozilla/moztrap/moztrap/model/execution/api.py/RunResource.dispatch_list