error[preamble-discussions-to]: preamble header `discussions-to` is not a valid URL --> input.md:6:16 | 6 | discussions-to: not a website dot com | ^^^^^^^^^^^^^^^^^^^^^^ relative URL without a base | error[preamble-re-discussions-to]: preamble header `discussions-to` should point to a thread on ethereum-magicians.org --> input.md:6:16 | 6 | discussions-to: not a website dot com | ^^^^^^^^^^^^^^^^^^^^^^ required pattern was not matched | = info: the pattern in question: `^https://ethereum-magicians.org/t/[^/]+/[0-9]+$`