https://bugs.mojang.com/browse/MC-148830

The specific crash seems to have been reported in many scenarios, however, the only way I can encounter it is by using WorldBoarder and attempting to pre-gen a world at 200 frequency,

Install Latest world border and run commands below supplementing <world> with a pre-existing world.

Setting a 20k by 20k radius using 

 /wb <world> set 10000 10000 0 0

And starting the fill using 

/wb <world> fill 200 208

Wait and server should crash and spawn a crash log

The bug was reported to Mojang in pre5 and it still exists so I don't see a patch coming anytime soon.