When a descriptor upload fails, tor sends on the control port a `UPLOAD_FAILED` event where in fact it should be sending a `FAILED` event as the action with the reason: `UPLOAD_REJECTED` or `UNEXPECTED`. The `control_event_hs_descriptor_upload_failed()` is the offending function. The control spec does not specify at all the `Action=UPLOAD_FAILED` nor Stem for instance knows about it so this is a problem on tor side.