This issue was discovered when playing on a dedicated server, though the problem persists in singleplayer.
Trying to reconnect to the server leads to another crash.
Upon removing or renaming the canary jar file - thus disabling the mod - the issue no longer occurs.
As there appear to be no specific conditions, any world will do.
The attached zip contains a superflat world with a boat and a villager spawn egg in hand.
Version
Reproduction Steps
This issue was discovered when playing on a dedicated server, though the problem persists in singleplayer. Trying to reconnect to the server leads to another crash. Upon removing or renaming the canary jar file - thus disabling the mod - the issue no longer occurs.
Crash Report File
Gist
Minecraft Save
Recreation.zip