Bucket keys containing a hyphen causes timeouts about fake-s3 HOT 2 OPEN

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    An unexpected error has occurred.
  Please try reproducing the error using
  the latest s3cmd code from the git master
  branch found at:
    https://github.com/s3tools/s3cmd
  and have a look at the known issues list:
    https://github.com/s3tools/s3cmd/wiki/Common-known-issues-and-their-solutions
  If the error persists, please report the
  following lines (removing any private
  info as necessary) to:
   [email protected]


!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Invoked as: /usr/bin/s3cmd mb s3://dev-bucket
Problem: gaierror: [Errno -2] Name or service not known
S3cmd:   1.6.1
python:   2.7.12 (default, Nov 19 2016, 06:48:10) 
[GCC 5.4.0 20160609]
environment LANG=en_US.UTF-8

Traceback (most recent call last):
  File "/usr/bin/s3cmd", line 2919, in <module>
    rc = main()
  File "/usr/bin/s3cmd", line 2841, in main
    rc = cmd_func(args)
  File "/usr/bin/s3cmd", line 205, in cmd_bucket_create
    response = s3.bucket_create(uri.bucket(), cfg.bucket_location)
  File "/usr/lib/python2.7/dist-packages/S3/S3.py", line 367, in bucket_create
    response = self.send_request(request)
  File "/usr/lib/python2.7/dist-packages/S3/S3.py", line 1081, in send_request
    conn = ConnMan.get(self.get_hostname(resource['bucket']))
  File "/usr/lib/python2.7/dist-packages/S3/ConnMan.py", line 192, in get
    conn.c.connect()
  File "/usr/lib/python2.7/httplib.py", line 836, in connect
    self.timeout, self.source_address)
  File "/usr/lib/python2.7/socket.py", line 557, in create_connection
    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
gaierror: [Errno -2] Name or service not known

ubuntu@ubuntu-xenial:~$ s3cmd mb s3://dev_bucket
Bucket 's3://dev_bucket/' created