You are using pip version 9.0.3, however version 22.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
$ echo "deploying to staging server"
deploying to staging server
$ systemctl start python.service
Failed to start python.service: Interactive authentication required.
See system logs and 'systemctl status python.service' for details.
section_end:1653497343:step_script
section_start:1653497343:cleanup_file_variables
Cleaning up project directory and file based variables
section_end:1653497343:cleanup_file_variables
ERROR: Job failed: exit status 1