Minor Hi,
I was just walking in my server lobby with no other players online when suddenly the server crashed. (this already happened 3 times with the same crash dump)
There weren't any errors before the server crashed.
Crash dump:
// Some comments here public String getFoo() 10.04 17:42:33 [Multicraft] Server stopped 10.04 17:42:33 [Multicraft] Restarting crashed server in 5 seconds 10.04 17:42:33 [Multicraft] Server shut down (running) 10.04 17:42:33 [Multicraft] Auto-saving world... 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.World.entityJoinedWorld(World.java:1612) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.EntityPlayer.m(EntityPlayer.java:201) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.Container.b(Container.java:80) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.ItemStack.cloneItemStack(ItemStack.java:449) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.NBTTagCompound.clone(SourceFile:371) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at java.util.HashMap$KeyIterator.next(HashMap.java:1453) ~[?:1.8.0_65] 10.04 17:42:32 [Server] INFO at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429) ~[?:1.8.0_65] 10.04 17:42:32 [Server] INFO java.util.ConcurrentModificationException 10.04 17:42:32 [Server] ERROR Cause of unexpected exception was 10.04 17:42:32 [Server] INFO ... 4 more 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:792) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.WorldServer.tickEntities(WorldServer.java:629) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.World.tickEntities(World.java:1389) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.WorldServer.l(WorldServer.java:652) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.World.g(World.java:1587) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.World.entityJoinedWorld(World.java:1612) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.EntityPlayer.m(EntityPlayer.java:201) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.Container.b(Container.java:80) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.ItemStack.cloneItemStack(ItemStack.java:449) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.NBTTagCompound.clone(SourceFile:371) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at java.util.HashMap$KeyIterator.next(HashMap.java:1453) ~[?:1.8.0_65] 10.04 17:42:32 [Server] INFO at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429) ~[?:1.8.0_65] 10.04 17:42:32 [Server] INFO Caused by: java.util.ConcurrentModificationException 10.04 17:42:32 [Server] INFO at java.lang.Thread.run(Thread.java:745) [?:1.8.0_65] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559) [custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:803) ~[custom.jar:git-Spigot-944aa20-8cb1b36] 10.04 17:42:32 [Server] INFO net.minecraft.server.v1_9_R1.ReportedException: Ticking player 10.04 17:42:32 [Server] ERROR Encountered an unexpected exception
I hope you guys can fix it!