Hi all, I've hotfixed the CI permission problem:
Exception: Traceback (most recent call last): File "/home/travis/build/apache/incubator-airflow/.tox/py35-backend_mysql/lib/python3.5/site-packages/pip/basecommand.py", line 215, in main status = self.run(options, args) File "/home/travis/build/apache/incubator-airflow/.tox/py35-backend_mysql/lib/python3.5/site-packages/pip/commands/wheel.py", line 199, in run if not wb.build(): File "/home/travis/build/apache/incubator-airflow/.tox/py35-backend_mysql/lib/python3.5/site-packages/pip/wheel.py", line 749, in build self.requirement_set.prepare_files(self.finder) File "/home/travis/build/apache/incubator-airflow/.tox/py35-backend_mysql/lib/python3.5/site-packages/pip/req/req_set.py", line 380, in prepare_files ignore_dependencies=self.ignore_dependencies)) File "/home/travis/build/apache/incubator-airflow/.tox/py35-backend_mysql/lib/python3.5/site-packages/pip/req/req_set.py", line 620, in _prepare_file session=self.session, hashes=hashes) File "/home/travis/build/apache/incubator-airflow/.tox/py35-backend_mysql/lib/python3.5/site-packages/pip/download.py", line 809, in unpack_url unpack_file_url(link, location, download_dir, hashes=hashes) File "/home/travis/build/apache/incubator-airflow/.tox/py35-backend_mysql/lib/python3.5/site-packages/pip/download.py", line 715, in unpack_file_url unpack_file(from_path, location, content_type, link) File "/home/travis/build/apache/incubator-airflow/.tox/py35-backend_mysql/lib/python3.5/site-packages/pip/utils/__init__.py", line 599, in unpack_file flatten=not filename.endswith('.whl') File "/home/travis/build/apache/incubator-airflow/.tox/py35-backend_mysql/lib/python3.5/site-packages/pip/utils/__init__.py", line 482, in unzip_file zipfp = open(filename, 'rb') PermissionError: [Errno 13] Permission denied: '/home/travis/.wheelhouse/Flask_Admin-1.5.0-py3-none-any.whl' I've fixed this now by explicitly removing the file: https://github.com/apache/incubator-airflow/pull/2993/files I know this isn't the nicest solution to fix this, but I don't have any access to Travis to wipe the cache or so. We can revert this once this file is evicted from the cache. If there are any questions, please let me know. Cheers, Fokko