---- Minecraft Crash Report ----
// This doesn't make any sense!

Time: 2/17/15 6:15 AM
Description: Exception ticking world

java.lang.OutOfMemoryError: Java heap space
	at xs.values(SourceFile:9)
	at ard.a(SourceFile:64)
	at qu.c(SourceFile:182)
	at net.minecraft.server.MinecraftServer.A(SourceFile:600)
	at net.minecraft.server.MinecraftServer.z(SourceFile:532)
	at cyk.z(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:448)
	at java.lang.Thread.run(Thread.java:745)


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

-- Head --
Stacktrace:
	at xs.values(SourceFile:9)
	at ard.a(SourceFile:64)
	at qu.c(SourceFile:182)

-- Affected level --
Details:
	Level name: Waking Up
	All players: 0 total; []
	Chunk stats: ServerChunkCache: 0 Drop: 0
	Level seed: -1932814322
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options:
	Level spawn location: 0.00,0.00,0.00 - World: (0,0,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 0 game time, 0 day time
	Level dimension: 0
	Level storage version: 0x00000 - Unknown?
	Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
	Level game mode: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at net.minecraft.server.MinecraftServer.A(SourceFile:600)
	at net.minecraft.server.MinecraftServer.z(SourceFile:532)
	at cyk.z(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:448)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 1.8.1
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 7398496 bytes (7 MB) / 1060372480 bytes (1011 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.