NameError: global name 'BRANCH_RE' is not defined

======================================================================
ERROR: bob.extension.test_scripts.test_new_version
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/home/amir/miniconda/envs/bob-2.3.4-2.7/lib/python2.7/site-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/home/amir/idiap/git/bobs/bob.extension/bob/extension/test_scripts.py", line 28, in test_new_version
    new_version(['--dry-run', '--stable-version', '20.7.0', '--latest-version', '20.8.0'])
  File "/home/amir/idiap/git/bobs/bob.extension/bob/extension/scripts/new_version.py", line 210, in main
    _update_readme(args.stable_version)
  File "/home/amir/idiap/git/bobs/bob.extension/bob/extension/scripts/new_version.py", line 90, in _update_readme
    if BRANCH_RE.search(line) is not None and "gitlab" in line:
NameError: global name 'BRANCH_RE' is not defined

I don't know why this does not happen in nightlies but I see this error in my PC.