Hi! It seems that the new pip is breaking on infra's package indices. Several jobs crash with: """ ValueError: HTML doctype missing or incorrect. Expected <!DOCTYPE html>. If you believe this error to be incorrect, try passing the command line option --use-deprecated=html5lib and please leave a comment on the pip issue at https://github.com/pypa/pip/issues/10825. [0m [31m """ Example from kolla: https://zuul.opendev.org/t/openstack/build/e1bab19dd7c1487e93afeb67284a695e Example from manila: https://zuul.opendev.org/t/openstack/build/984ed9f10f0845ceba59b573e25bbb87 -yoctozepto