Bug 1493053 made me install xdelta3 on the worker. However, something went wrong on the Store side[1]. The logs don't say much more than:
> 2018-09-21T13:03:53 INFO - 2018-09-21 13:03:53,855 - snapcraft._store - INFO - Pushing delta /builds/scriptworker/work/cot/BtwB6HZZTCSL2KbfPCTRzg/public/build/target.snap.xdelta3.
> Pushing target.snap.xdelta3 [============================================] 100%
Processing...|
> 2018-09-21T13:04:13 INFO - 2018-09-21 13:04:13,786 - snapcraft._store - WARNING - Error generating delta: There has been a problem while processing a snap delta.
> 2018-09-21T13:04:13 INFO - - Delta service failed to apply delta successfully
> 2018-09-21T13:04:13 INFO - Falling back to pushing full snap...
Bug 1493053 made me install xdelta3 on the worker. However, something went wrong on the Store side[1]. The logs don't say much more than:
> 2018-09-21T13:03:53 INFO - 2018-09-21 13:03:53,855 - snapcraft._store - INFO - Pushing delta /builds/ scriptworker/ work/cot/ BtwB6HZZTCSL2Kb fPCTRzg/ public/ build/target. snap.xdelta3. ======= ======= ======= ======= ======= ===] 100%
> Pushing target.snap.xdelta3 [======
Processing...|
> 2018-09-21T13:04:13 INFO - 2018-09-21 13:04:13,786 - snapcraft._store - WARNING - Error generating delta: There has been a problem while processing a snap delta.
> 2018-09-21T13:04:13 INFO - - Delta service failed to apply delta successfully
> 2018-09-21T13:04:13 INFO - Falling back to pushing full snap...
I filed https:/ /bugs.launchpad .net/snapstore/ +bug/1793752 to get more input.
[1] https:/ /tools. taskcluster. net/groups/ CTU6CA- PTGyDBu4IExIgoA /tasks/ USJ2lRdtQ16waOO 0kzT-zw/ runs/2/ logs/public% 2Flogs% 2Flive_ backing. log#L198