Hopper: java.lang.OutOfMemoryError: Java heap space

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-312615/

Crash:

java.lang.OutOfMemoryError: Java heap space
java.lang.OutOfMemoryError: Java heap space

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

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 11.10.13 17:51
Description: Ticking entity

java.lang.OutOfMemoryError: Java heap space
	at java.util.Arrays.copyOf(Unknown Source)
	at java.util.ArrayList.grow(Unknown Source)
	at java.util.ArrayList.ensureCapacityInternal(Unknown Source)
	at java.util.ArrayList.add(Unknown Source)
	at axx.a(SourceFile:28)
	at axw.c(SourceFile:59)
	at ahm.a(SourceFile:696)
	at ahi.a(SourceFile:295)
	at afe.a(SourceFile:722)
	at afe.a(SourceFile:697)
	at afe.a(SourceFile:1595)
	at aez.a(SourceFile:115)
	at mc.a(SourceFile:668)
	at afe.a(SourceFile:1571)
	at vy.c(SourceFile:75)
	at vy.a(SourceFile:67)
	at vo.a(SourceFile:135)
	at aez.a(SourceFile:117)
	at mc.a(SourceFile:668)
	at afe.a(SourceFile:1571)
	at vy.c(SourceFile:75)
	at vy.a(SourceFile:67)
	at vo.a(SourceFile:135)
	at aez.a(SourceFile:117)
	at mc.a(SourceFile:668)
	at afe.a(SourceFile:1571)
	at vy.c(SourceFile:75)
	at vy.a(SourceFile:67)
	at vo.a(SourceFile:135)
	at aez.a(SourceFile:117)
	at mc.a(SourceFile:668)
	at afe.a(SourceFile:1571)


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

-- Head --
Stacktrace:
	at java.util.Arrays.copyOf(Unknown Source)
	at java.util.ArrayList.grow(Unknown Source)
	at java.util.ArrayList.ensureCapacityInternal(Unknown Source)
	at java.util.ArrayList.add(Unknown Source)
	at axx.a(SourceFile:28)
	at axw.c(SourceFile:59)
	at ahm.a(SourceFile:696)
	at ahi.a(SourceFile:295)
	at afe.a(SourceFile:722)
	at afe.a(SourceFile:697)
	at afe.a(SourceFile:1595)
	at aez.a(SourceFile:115)
	at mc.a(SourceFile:668)
	at afe.a(SourceFile:1571)
	at vy.c(SourceFile:75)
	at vy.a(SourceFile:67)
	at vo.a(SourceFile:135)
	at aez.a(SourceFile:117)
	at mc.a(SourceFile:668)
	at afe.a(SourceFile:1571)
	at vy.c(SourceFile:75)
	at vy.a(SourceFile:67)
	at vo.a(SourceFile:135)
	at aez.a(SourceFile:117)
	at mc.a(SourceFile:668)

-- Entity being ticked --
Details:
	Entity Type: MinecartTNT (vy)
	Entity ID: 91907
	Entity Name: entity.MinecartTNT.name
	Entity's Exact location: 298,50, 67,50, -79,51
	Entity's Block location: World: (298,67,-80), Chunk: (at 10,4,0 in 18,-5; contains blocks 288,0,-80 to 303,255,-65), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Entity's Momentum: 0,00, 0,00, -580,33
Stacktrace:
	at afe.h(SourceFile:1255)
	at mc.h(SourceFile:364)
	at net.minecraft.server.MinecraftServer.u(SourceFile:511)
	at net.minecraft.server.MinecraftServer.t(SourceFile:441)
	at brh.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:358)
	at kt.run(SourceFile:617)

-- Affected level --
Details:
	Level name: 1.7
	All players: 1 total; [mf['_tsts_'/94134, l='1.7', x=303,51, y=78,81, z=-76,06]]
	Chunk stats: ServerChunkCache: 667 Drop: 0
	Level seed: -7120124195306896872
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (256,64,-16), Chunk: (at 0,4,0 in 16,-1; contains blocks 256,0,-16 to 271,255,-1), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 15277 game time, 1914 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 30239 (now: false), thunder time: 91249 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true

-- System Details --
Details:
	Minecraft Version: 13w41b
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_11, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 64543920 bytes (61 MB) / 1036320768 bytes (988 MB) up to 1036320768 bytes (988 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 14720 (824320 bytes; 0 MB) allocated, 978 (54768 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 13845150 (775328400 bytes; 739 MB) allocated, 13845150 (775328400 bytes; 739 MB) used
	Player Count: 1 / 8; [mf['_tsts_'/94134, l='1.7', x=303,51, y=78,81, z=-76,06]]
	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-312615/16834857/