Comment # 23 on bug 1028136 from Daniel Molkentin

ok, then try the other way around and give the swap device the old UUID. It
seems like your swap devices is sda7 (please double check, mkswap reinitializes
the partition!), so as root, run:

- swapoff /dev/disks/by-uuid/bab51854-d247-4166-90cc-2b9041e5c199
- mkswap -U 13d2c6ed-8a60-48af-867d-cf56543285f8 /dev/sda7
- sed -i
's,bab51854-d247-4166-90cc-2b9041e5c199,13d2c6ed-8a60-48af-867d-cf56543285f8,g'
/etc/fstab
- swapon /dev/disks/by-uuid/13d2c6ed-8a60-48af-867d-cf56543285f8

This should resolve your problem.