This is caused by https://github.com/juju/juju/commit/b582fe14b05cce1fcd2ad757c97382b2b2bda01e this commit changed the structure of the machine document and therefore one of the restore steps (updating machine document to hold new intance) was broken.
This is caused by https:/ /github. com/juju/ juju/commit/ b582fe14b05cce1 fcd2ad757c97382 b2b2bda01e this commit changed the structure of the machine document and therefore one of the restore steps (updating machine document to hold new intance) was broken.