Upstream has released updates that appears to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing
CraftBukkit Changes:
72f368909 SPIGOT-5965: BlockRedstoneEvent.setNewCurrent(0) crashes server
60f8a29d1 SPIGOT-5968: Killer rabbits can't be set to the non-killer rabbit behavior
69fddc725#705: Improve implementation of furnace related block states
* She compiles!
Also readded the armorstand ticking patch, thanks cat
* Update mob goal api
* Misc fixes to make it run
drop per playing mob spawns for now