Problem: KeyError: 'dest_name'
S3cmd:   1.0.1

Traceback (most recent call last):
  File "/pfs/sw/python/bin/s3cmd", line 2006, in <module>
    main()
  File "/pfs/sw/python/bin/s3cmd", line 1950, in main
    cmd_func(args)
  File "/pfs/sw/python/bin/s3cmd", line 618, in cmd_mv
    subcmd_cp_mv(args, s3.object_move, "move", "File %(src)s moved to %(dst)s")
  File "/pfs/sw/python/bin/s3cmd", line 604, in subcmd_cp_mv
    dst_uri = S3Uri(item['dest_name'])
KeyError: 'dest_name'