TypeError: can't compare offset-naive and offset-aware datetimes

[aidanlister]

TypeError: can't compare offset-naive and offset-aware datetimes
(7 additional frame(s) were not displayed)
...
  File "rest_framework/mixins.py", line 133, in update
    self.pre_save(serializer.object)
  File "abas/apps/api/views.py", line 106, in pre_save
    self.changed_data = self.object.tracker.changed()
  File "model_utils/tracker.py", line 60, in changed
    for field in self.fields
  File "model_utils/tracker.py", line 61, in <genexpr>
    if self.has_changed(field)
  File "model_utils/tracker.py", line 48, in has_chan
 ged
    return self.previous(field) != self.get_field_value(field)

[carljm]

Thanks for the report! Looks like FieldTracker should generally catch TypeError on that comparison, so as to be able to handle the (unusual) case of incomparable types. I think incomparable types should be considered "different" as far as FieldTracker is concerned. PR welcome.