can't upload a patch

[David Nalesnik]

Not too long ago, I wrote to the list about an inability to upload
patches.  A Rietveld tracker issue is created, but the process
terminates before all of the base files can be uploaded.  An Allura
issue is never created.

I was using a VirtualBox VM on a Windows 10 system.

Now, on a different machine, no Windows, with Ubuntu 16.10 and LilyDev
4.1 running (also in VirtualBox), I get the same result.

Here is what happens when I attempt to upload a patch:

[lilypond-git (dev/bracket_reorganization)]$ git-cl upload origin/master
 lily/bracket.cc                    | 151 +++++++++++++++++++++++++++++++++++++
 lily/enclosing-bracket.cc          |  16 ++--
 lily/horizontal-bracket.cc         |  73 +-----------------
 lily/include/bracket.hh            |  40 ++++++++++
 lily/include/horizontal-bracket.hh |   5 --
 lily/include/tuplet-bracket.hh     |   4 -
 lily/ottava-bracket.cc             |  11 ++-
 lily/piano-pedal-bracket.cc        |  10 +--
 lily/tuplet-bracket.cc             |  78 +++----------------
 lily/volta-bracket.cc              |   9 +--
 10 files changed, 227 insertions(+), 170 deletions(-)
Upload server: codereview.appspot.com (change with -s/--server)
Your browser has been opened to visit:

    https://codereview.appspot.com/get-access-token?port=8001

If your browser is on a different machine then exit and re-run
upload.py with the command-line parameter

  --no_oauth2_webbrowser

Issue created. URL: http://codereview.appspot.com/313670043
Uploading base file for lily/include/horizontal-bracket.hh
Uploading base file for lily/include/tuplet-bracket.hh
Traceback (most recent call last):
  File "/home/david/git-cl/git-cl", line 628, in <module>
    sys.exit(main(sys.argv))
  File "/home/david/git-cl/git-cl", line 622, in main
    return func(argv[2:])
  File "/home/david/git-cl/git-cl", line 335, in CmdUpload
    issue, patchset = upload.RealMain(['upload'] + upload_args + args)
  File "/home/david/git-cl/upload.py", line 2693, in RealMain
    vcs.UploadBaseFiles(issue, rpc_server, patches, patchset, options, files)
  File "/home/david/git-cl/upload.py", line 1220, in UploadBaseFiles
    print t.get(timeout=60)
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 558, in get
    raise self._value
urllib2.URLError: <urlopen error [Errno -2] Name or service not known>
[lilypond-git (dev/bracket_reorganization)]$

_____

Does anybody have an idea of what could be happening?  Has anybody
experienced this problem?

At my wit's end :(

David