Filesystem did not have a UUID; generating one.

Pass 1: Checking inodes, blocks, and sizes
Directory 12, incorrect size, 182 (counted = 1024). Set size to counted? yes

Inode 13 is a zero length directory.  Clear? yes

Pass 2: Checking directory structure
Entry 'zero' in / (2) has deleted/unused inode 13.
Clear? yes

Directory inode 12, block 0, offset 0: directory corrupted
Salvage? yes

Missing '.' in directory inode 12.
Fix? yes

Missing '..' in directory inode 12.
Fix? yes

Pass 3: Checking directory connectivity
'..' in /block.h (12) is . (0), should be / (2).
Fix? yes

Pass 4: Checking reference counts
Inode 12 has ref count 1, expecting 2.
Set i_nlinks to count? yes

Pass 5: Checking group summary information
Fix summary information? yes

Block bitmap differences: -22.  FIXED
Free blocks count wrong (76, counted=77).  FIXED
Inode bitmap differences: -13.  FIXED
Free inodes count wrong for group #0 (19, counted=20).  FIXED
Directories count wrong for group #0 (4, counted=3).  FIXED
Free inodes count wrong (19, counted=20).  FIXED

test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
test_filesys: 12/32 files (0.0% non-contiguous), 23/100 blocks
Exit status is 1