Stuck job for oVirt Engine CI?

Hi infra, I've observed over the weekend and today that sometimes ovirt-engine's CI seems to be stuck. E.g., take a look at [1]. The first out of four jobs started about 90 mintues(!) ago, and nothing seems to have progressed since. Can someone please take a look? Thanks, Allon [1] https://gerrit.ovirt.org/#/c/48155/