WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv WARNING: You are using pip version 21.2.4; however, version 22.0.4 is available. You should consider upgrading via the '/usr/local/bin/python -m pip install --upgrade pip' command. $ flake8 $ mypy . harvester/source/http.py:30: error: Incompatible return value type (got "StringIO", expected "IO[bytes]") Found 1 error in 1 file (checked 25 source files) Cleaning up project directory and file based variables ERROR: Job failed: exit code 1