Low disk space if called frequently.

[droidlabour]

[Errno 28] No space left on device: IOError
Traceback (most recent call last):
File "/var/task/lambda_function.py", line 170, in lambda_handler
zipfile = zip_repo(repo_path, repo_name)
File "/var/task/lambda_function.py", line 103, in zip_repo
zf.write(os.path.join(dirname, filename), os.path.join(zdirname, filename))
File "/usr/lib64/python2.7/zipfile.py", line 1202, in write
self.fp.seek(zinfo.header_offset, 0)
IOError: [Errno 28] No space left on device