[ramdac@ramdac mozilla-central]$ ./mach python python/mozbuild/mozbuild/action/package_geckolibs_aar.py --topsrcdir ~/Projects/mozilla-central/  --distdir objdir-droid/dist --revision 123 aar_folder/
Traceback (most recent call last):
  File "python/mozbuild/mozbuild/action/package_geckolibs_aar.py", line 262, in <module>
    sys.exit(main(sys.argv[1:]))
  File "python/mozbuild/mozbuild/action/package_geckolibs_aar.py", line 186, in main
    package_geckoview_aar(args.topsrcdir, args.distdir, geckoview_aar)
  File "python/mozbuild/mozbuild/action/package_geckolibs_aar.py", line 138, in package_geckoview_aar
    jar_finder = JarFinder(p, JarReader(file=jar_path))
  File "/home/ramdac/Projects/mozilla-central/python/mozbuild/mozpack/files.py", line 868, in __init__
    self._files = OrderedDict((f.filename, f) for f in reader)
  File "/usr/lib64/python2.7/collections.py", line 52, in __init__
    self.__update(*args, **kwds)
  File "/home/ramdac/Projects/mozilla-central/objdir-droid/_virtualenv/lib/python2.7/_abcoll.py", line 566, in update
    for key, value in other:
  File "/home/ramdac/Projects/mozilla-central/python/mozbuild/mozpack/files.py", line 868, in <genexpr>
    self._files = OrderedDict((f.filename, f) for f in reader)
  File "/home/ramdac/Projects/mozilla-central/python/mozbuild/mozpack/mozjar.py", line 438, in __iter__
    yield self._getreader(entry)
  File "/home/ramdac/Projects/mozilla-central/python/mozbuild/mozpack/mozjar.py", line 426, in _getreader
    'mismatch. Corrupted archive?')
mozpack.mozjar.JarReaderError: Central directory and file header mismatch. Corrupted archive?