---- Minecraft Crash Report ----
// Don't do that.

Time: 7/31/14 5:02 PM
Description: Exception ticking world

java.util.ConcurrentModificationException
        at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:782)
        at java.util.ArrayList$Itr.next(ArrayList.java:754)
        at aqh.a(SourceFile:2316)
        at aqt.a(SourceFile:73)
        at qo.c(SourceFile:182)
        at net.minecraft.server.MinecraftServer.y(SourceFile:598)
        at pk.y(SourceFile:303)
        at net.minecraft.server.MinecraftServer.x(SourceFile:530)
        at net.minecraft.server.MinecraftServer.run(SourceFile:446)
        at java.lang.Thread.run(Thread.java:679)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
        at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:782)
        at java.util.ArrayList$Itr.next(ArrayList.java:754)
        at aqh.a(SourceFile:2316)
        at aqt.a(SourceFile:73)
        at qo.c(SourceFile:182)

-- Affected level --
Details:
        Level name: world
        All players: 1 total; [qr['maznu'/170, l='world', x=86.81, y=75.00, z=217.54]]
        Chunk stats: ServerChunkCache: 827 Drop: 0
        Level seed: -2766085165584861452
        Level generator: ID 00 - default, ver 1. Features enabled: true
        Level generator options:
        Level spawn location: -496.00,64.00,-63.00 - World: (-496,64,-63), Chunk: (at 0,4,1 in -31,-4; contains blocks -496,0,-64 to -481,255,-49), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
        Level time: 1607439824 game time, 532818787 day time
        Level dimension: 0
        Level storage version: 0x04ABD - Anvil
        Level weather: Rain time: 49263 (now: false), thunder time: 148260 (now: false)
        Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
        at net.minecraft.server.MinecraftServer.y(SourceFile:598)
        at pk.y(SourceFile:303)
        at net.minecraft.server.MinecraftServer.x(SourceFile:530)
        at net.minecraft.server.MinecraftServer.run(SourceFile:446)
        at java.lang.Thread.run(Thread.java:679)

-- System Details --
Details:
        Minecraft Version: 14w31a
        Operating System: Linux (amd64) version 3.2.0-4-amd64
        Java Version: 1.6.0_27, Sun Microsystems Inc.
        Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
        Memory: 311369896 bytes (296 MB) / 719978496 bytes (686 MB) up to 3817799680 bytes (3640 MB)
        JVM Flags: 2 total; -Xms64M -Xmx4096M
        IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
        Profiler Position: N/A (disabled)
        Player Count: 1 / 16; [qr['maznu'/170, l='world', x=86.81, y=75.00, z=217.54]]
        Is Modded: Unknown (can't tell)
        Type: Dedicated Server (map_server.txt)