[trusty] Swap partition not set up correctly

I think I found a bug with the creation of the swap, here is what I did

sda1 was kept as EFI
sda2 created as ext2 mount to /boot
sda3 created as swap
sda4 created as btrfs

I selected "Encrypt my home"
Installation went fine.

After reboot and logon I asked myself if SWAP was encrypted as I only selected swap, after I found out that when I create a dmcrypt volume I could not select a random key, which I would like to have for swap.

To my satisfaction crypttab was already set up!

mfl@devore:~$ cat /etc/crypttab
cryptswap1 UUID=5300177f-d9c4-4d71-9039-b65273ce9917 /dev/urandom swap,cipher=aes-cbc-essiv:sha256

BUT: top shows, that there is no swap enabled:
top - 12:01:57 up 19 min, 5 users, load average: 0,03, 0,07, 0,06
Tasks: 212 total, 1 running, 210 sleeping, 0 stopped, 1 zombie
%Cpu(s): 1,2 us, 0,6 sy, 0,9 ni, 97,0 id, 0,2 wa, 0,0 hi, 0,0 si, 0,0 st
KiB Mem: 10120340 total, 2343864 used, 7776476 free, 1856 buffers
KiB Swap: 0 total, 0 used, 0 free. 1625312 cached Mem

weird!

mfl@devore:~$ sudo /etc/init.d/cryptdisks restart
[sudo] password for mfl:
 * Stopping remaining crypto disks... * cryptswap1 (stopped)... [ OK ]
 * Starting remaining crypto disks... * cryptswap1 (skipped, device /dev/disk/by-uuid/5300177f-d9c4-4d71-9039-b65273ce9917 does not exist)... [fail]
                                                                                                                                                                                   [ OK ]

mfl@devore:~$ ls -la /dev/disk/by-uuid/
total 0
drwxr-xr-x 2 root root 100 Apr 5 11:42 .
drwxr-xr-x 5 root root 100 Apr 5 11:42 ..
lrwxrwxrwx 1 root root 10 Apr 5 11:42 3beb9864-e87b-4a61-a06d-fd351038b37d -> ../../sda4
lrwxrwxrwx 1 root root 10 Apr 5 11:42 45461e04-02c4-481b-9d6c-efa214490de1 -> ../../sda2
lrwxrwxrwx 1 root root 10 Apr 5 11:42 6B91-2F53 -> ../../sda1

Okay, partition missing? Weird! Check parted...

mfl@devore:~$ sudo parted /dev/sda print all
Model: ATA TOSHIBA THNSNH25 (scsi)
Disk /dev/sda: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags
 1 1049kB 512MB 511MB fat32 boot
 2 512MB 1024MB 512MB ext2
 3 1024MB 6024MB 5000MB
 4 6024MB 256GB 250GB btrfs

sda3 happens to be there, but not found by UUID with which it was set up by the installer.