encryption - Swap partition get damaged when encrypted

I upgraded my system to Ubuntu 14.04LTS, I encrypted the home & the swap partition during the installation since it was already encrypted in the old version.

But later I noticed swap partition is not used & using the gparted I found the swaps is damaged, I re-formatted the swap partition as Linux-swap & fixed the UUID in the fstab then cleared the crypttab, then swap was working fine but without the encryption. As soon as I run the ecryptfs-setup-swap to encrypt the swap partition then reboot the system it gets damaged.

This link shows the steps I followed

Any idea how to fix this?

---

@muru this is the output, & sda6 is the swap part.

sudo blkid

/dev/sda1: SEC_TYPE="msdos" UUID="5450-4444" TYPE="vfat" 

/dev/sda2: LABEL="RECOVERY" UUID="DAAC6031AC600A79" TYPE="ntfs"
/dev/sda3: LABEL="WinSys" UUID="E2D0647AD0645737" TYPE="ntfs"
/dev/sda5: UUID="96e501a8-40ee-4d08-bcb2-2396a99abd94" TYPE="ext4"
/dev/sda7: UUID="348874d5-f654-4640-bbad-0b377e545334" TYPE="ext4" 


sudo lsblk

NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 698.7G  0 disk 

├─sda1   8:1    0  39.2M  0 part 
├─sda2   8:2    0  13.2G  0 part 
├─sda3   8:3    0   100G  0 part 
├─sda4   8:4    0     1K  0 part 
├─sda5   8:5    0  42.9G  0 part /
├─sda6   8:6    0  14.3G  0 part 
└─sda7   8:7    0 528.2G  0 part /home
sr0     11:0    1  1024M  0 rom  

Hope its readable now.