gsutil rsync fails with the error: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode

Hi All,

I am facing issue with gsutil while doing syncing s3 bucket with gc bucket.
The error is as follows.

++++
root@server:~# gsutil rsync -d -r s3://bucket-in-s3 gs://bucket-in-gc
Building synchronization state...
At source listing 10000...
/usr/lib/python2.7/urllib.py:1299: UnicodeWarning: Unicode equal comparison failed to convert both arguments to Unicode - interpreting them as being unequal
return ''.join(map(quoter, s))
Caught non-retryable exception while listing s3://bucket-in-s3/: u'\xd9'
CommandException: Caught non-retryable exception - aborting rsync
+++++

Can someone help?