[root@ip-172-31-20-185 /]# salt 'ip-172-31-17-49' s3.get s3://foo.bucket.com
ip-172-31-17-49:
    The minion function caused an exception: Traceback (most recent call last):
      File "/usr/lib/python2.6/site-packages/salt/minion.py", line 1071, in _thread_return
        return_data = func(*args, **kwargs)
      File "/usr/lib/python2.6/site-packages/salt/modules/s3.py", line 169, in get
        role_arn=role_arn)
      File "/usr/lib/python2.6/site-packages/salt/utils/s3.py", line 112, in query
        requesturl=requesturl,
      File "/usr/lib/python2.6/site-packages/salt/utils/aws.py", line 219, in sig4
        access_key_id, secret_access_key, token = assumed_creds(prov_dict, role_arn, location=location)
      File "/usr/lib/python2.6/site-packages/salt/utils/aws.py", line 156, in assumed_creds
        now = (datetime.utcnow() - datetime(1970, 1, 1)).total_seconds()
    AttributeError: 'datetime.timedelta' object has no attribute 'total_seconds'
[root@ip-172-31-20-185 /]#