Hi! I'm afraid that asciidoctor 2.0 dropped support for docbook45. The explanation given is here: https://github.com/asciidoctor/asciidoctor/issues/3005
This makes btrfs-progs fail to build unless docs are off, with: asciidoctor: FAILED: missing converter for backend 'docbook45'. Processing aborted. Naively bumping the backend to docbook5 makes the output fail to pass validation. I don't know a thing about docbook nor asciidoc, thus I can't fix this myself. kdave: you did the conversion, could you save us now? Meow! -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Ivan was a worldly man: born in St. Petersburg, raised in ⢿⡄⠘⠷⠚⠋⠀ Petrograd, lived most of his life in Leningrad, then returned ⠈⠳⣄⠀⠀⠀⠀ to the city of his birth to die.
