---- Minecraft Crash Report ----
// My bad.

Time: 7/31/14 7:03 PM
Description: Exception in server tick loop

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)
	at java.util.HashMap$KeyIterator.next(HashMap.java:956)
	at qi.a(SourceFile:163)
	at net.minecraft.server.MinecraftServer.y(SourceFile:614)
	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:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
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-- System Details --
Details:
	Minecraft Version: 14w31a
	Operating System: Linux (amd64) version 3.2.0-4-amd64
	Java Version: 1.7.0_65, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 580920080 bytes (554 MB) / 1212153856 bytes (1156 MB) up to 15270936576 bytes (14563 MB)
	JVM Flags: 2 total; -Xmx16384M -Xms1024M
	IntCache: cache: 0, tcache: 44, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Player Count: 6 / 50; [qr['Jacko59N'/442, l='world', x=544.95, y=75.00, z=32.64], qr['DaeronRS'/641, l='world', x=382.45, y=74.00, z=32.45], qr['Fourys'/26105, l='world', x=76.35, y=68.00, z=252.80], qr['EmaKha_square'/152372, l='world', x=50.09, y=66.00, z=178.30], qr['vin0020'/170361, l='world', x=120.46, y=33.00, z=232.14], qr['Deadlyzona'/202326, l='world', x=378.14, y=64.00, z=3721.42]]
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)