Hopper: java.lang.OutOfMemoryError: GC overhead limit exceeded

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-84909/

Crash:

java.lang.OutOfMemoryError: GC overhead limit exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded

The following is the first clean report made public about this crash:

---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!

Time: 06/09/13 5:55 PM
Description: Exception generating new chunk

java.lang.OutOfMemoryError: GC overhead limit exceeded
	at amj.b(SourceFile:10)
	at anc.a(SourceFile:42)
	at amb.a(SourceFile:16)
	at anc.a(SourceFile:20)
	at amb.a(SourceFile:16)
	at amb.a(SourceFile:16)
	at amb.a(SourceFile:16)
	at ams.a(SourceFile:19)
	at amd.a(SourceFile:16)
	at amb.a(SourceFile:16)
	at aly.c(SourceFile:35)
	at aly.a(SourceFile:22)
	at aly.d(SourceFile:70)
	at aly.a(SourceFile:24)
	at aly.e(SourceFile:100)
	at aly.a(SourceFile:26)
	at anc.a(SourceFile:20)
	at anc.a(SourceFile:20)
	at amb.a(SourceFile:16)
	at amc.a(SourceFile:17)
	at alx.a(SourceFile:18)
	at amt.a(SourceFile:11)
	at anc.a(SourceFile:20)
	at anc.a(SourceFile:20)
	at amr.a(SourceFile:17)
	at amq.a(SourceFile:13)
	at anc.a(SourceFile:20)
	at amb.a(SourceFile:16)
	at anc.a(SourceFile:20)
	at amw.a(SourceFile:13)
	at anc.a(SourceFile:20)
	at anc.a(SourceFile:20)


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

-- Head --
Stacktrace:
	at amj.b(SourceFile:10)
	at anc.a(SourceFile:42)
	at amb.a(SourceFile:16)
	at anc.a(SourceFile:20)
	at amb.a(SourceFile:16)
	at amb.a(SourceFile:16)
	at amb.a(SourceFile:16)
	at ams.a(SourceFile:19)
	at amd.a(SourceFile:16)
	at amb.a(SourceFile:16)
	at aly.c(SourceFile:35)
	at aly.a(SourceFile:22)
	at aly.d(SourceFile:70)
	at aly.a(SourceFile:24)
	at aly.e(SourceFile:100)
	at aly.a(SourceFile:26)

-- Chunk to be generated --
Details:
	Location: 1,55
	Position hash: 236223201281
	Generator: RandomLevelSource
Stacktrace:
	at kc.c(SourceFile:75)
	at kb.<init>(SourceFile:28)
	at ka.a(SourceFile:209)
	at ka.d(SourceFile:343)
	at hw.d(SourceFile:211)
	at kl.a(SourceFile:272)
	at fd.a(SourceFile:136)
	at cv.b(SourceFile:64)
	at kl.e(SourceFile:63)
	at ko.b(SourceFile:37)
	at bnq.b(SourceFile:84)
	at net.minecraft.server.MinecraftServer.t(SourceFile:481)
	at net.minecraft.server.MinecraftServer.s(SourceFile:398)
	at bnn.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:332)
	at hr.run(SourceFile:575)

-- Ticking connection --
Details:
	Connection: kl@25a07eae

-- System Details --
Details:
	Minecraft Version: 13w36b
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.7.0_40, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 60492288 bytes (57 MB) / 477102080 bytes (455 MB) up to 477102080 bytes (455 MB)
	JVM Flags: 3 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -Xmx512M
	AABB Pool Size: 6797 (380632 bytes; 0 MB) allocated, 6511 (364616 bytes; 0 MB) used
	IntCache: cache: 9, tcache: 69, allocated: 4, tallocated: 26
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1923 (107688 bytes; 0 MB) allocated, 1717 (96152 bytes; 0 MB) used
	Player Count: 1 / 8; [kg['scriblemelego'/945642, l='Amplified', x=-47.30, y=78.00, z=1050.93]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-84909/8458494/