Comment 4 for bug 1580571

I looks like there is a change in how origin is being dealt with.

It is checking if it is a string type (which it should be) but things my be getting lost on the path from zone.from_text() to the Zone.__init__()

I am reproducing right now, and will file a bug upstream.

In the mean time - blocking 1.13.0 from our requirements is a good idea, as this may break people who are not using U-C for master, and our stable branches that are not using U-C.