def search(self, regex):
        try:
            spec = {'$or': [{'data.content'    : {'$regex': regex, '$options': 'im'}},
                            {'data.description': {'$regex': regex, '$options': 'im'}}]}
            fields = {'_id': 0}
            cur = self.db.docs.find(spec, fields)
        except Exception as e:
            raise DatabaseException(e)
        return [Document(**row) for row in cur]
def clone_results_repo(dest_dir):
    subprocess.check_call(
        ["git", "clone", "https://github.com/elopio/autopkgtest-results.git", dest_dir]
    )