fails like this

ubuntu@saio:~$ for i in {1..10}; do nosetests swift/test/unit/obj/test_diskfile.py:TestSuffixHashes.test_contains_hashes_of_existing_partition -vsx; if [ $? -ne 0 ]; then break; fi; done
test_contains_hashes_of_existing_partition (test.unit.obj.test_diskfile.TestSuffixHashes) ... suffix-hash-test DEBUG: Run listdir on /tmp/tmpCb_evI/node/sda1/objects/0
suffix-hash-test DEBUG: Run listdir on /tmp/tmpCb_evI/node/sda1/objects-1/0
ok

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Ran 1 test in 0.043s

OK
test_contains_hashes_of_existing_partition (test.unit.obj.test_diskfile.TestSuffixHashes) ... suffix-hash-test DEBUG: Run listdir on /tmp/tmplWFsH0/node/sda1/objects/0
suffix-hash-test DEBUG: Run listdir on /tmp/tmplWFsH0/node/sda1/objects-1/0
ok

----------------------------------------------------------------------
Ran 1 test in 0.036s

OK
test_contains_hashes_of_existing_partition (test.unit.obj.test_diskfile.TestSuffixHashes) ... suffix-hash-test DEBUG: Run listdir on /tmp/tmp2ZeCV_/node/sda1/objects/0
suffix-hash-test DEBUG: Run listdir on /tmp/tmp2ZeCV_/node/sda1/objects-1/0
ok

----------------------------------------------------------------------
Ran 1 test in 0.033s

OK
test_contains_hashes_of_existing_partition (test.unit.obj.test_diskfile.TestSuffixHashes) ... suffix-hash-test DEBUG: Run listdir on /tmp/tmpD_gTbA/node/sda1/objects/0
suffix-hash-test DEBUG: Run listdir on /tmp/tmpD_gTbA/node/sda1/objects-1/0
FAIL

======================================================================
FAIL: test_contains_hashes_of_existing_partition (test.unit.obj.test_diskfile.TestSuffixHashes)
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Traceback (most recent call last):
  File "/home/ubuntu/swift/test/unit/obj/test_diskfile.py", line 6150, in test_contains_hashes_of_existing_partition
    self.assertIn(suffix2, hashes)
AssertionError: '23d' not found in {'bbe': '27c7c24c175ffa4e8a6a8ec312408640'}

----------------------------------------------------------------------
Ran 1 test in 0.048s

FAILED (failures=1)