On amd64 this looks to be a race between creating disk partitions and having usable devnodes created by udev (wait, check?):
Device Boot Start End Sectors Size Id Type /dev/loop12p1 2048 800767 798720 390M 83 Linux /dev/loop12p2 800768 819199 18432 9M 83 Linux The partition table has been altered. Calling ioctl() to re-read partition table. Syncing disks. The file /dev/loop12p1 does not exist and no size was specified. make: *** [setup] Error 1 F: Failed to mkfs -t ext3 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. https://bugs.launchpad.net/bugs/1748398 Title: systemd 234-2ubuntu12.1 ADT test failure with linux 4.13.0-33.36 Status in systemd package in Ubuntu: Confirmed Bug description: Testing failed on: * amd4: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-artful/artful/amd64/s/systemd/20180207_192259_e5f4f@/log.gz * s390x: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-artful/artful/s390x/s/systemd/20180207_182937_e5f4f@/log.gz To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1748398/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp