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-191065/

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 ----
// You're mean.

Time: 19.09.13 22:14
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 avs.a(SourceFile:24)
	at avq.b(SourceFile:74)
	at add.a(SourceFile:971)
	at uj.a(SourceFile:159)
	at uj.bo(SourceFile:91)
	at pd.e(SourceFile:1315)
	at pe.e(SourceFile:294)
	at pd.h(SourceFile:1198)
	at pe.h(SourceFile:170)
	at add.a(SourceFile:1372)
	at km.a(SourceFile:479)
	at add.g(SourceFile:1350)
	at add.h(SourceFile:1257)
	at km.h(SourceFile:364)
	at net.minecraft.server.MinecraftServer.u(SourceFile:469)
	at net.minecraft.server.MinecraftServer.t(SourceFile:404)
	at bor.t(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:338)
	at jb.run(SourceFile:581)


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 avs.a(SourceFile:24)
	at avq.b(SourceFile:74)
	at add.a(SourceFile:971)
	at uj.a(SourceFile:159)
	at uj.bo(SourceFile:91)
	at pd.e(SourceFile:1315)
	at pe.e(SourceFile:294)
	at pd.h(SourceFile:1198)
	at pe.h(SourceFile:170)
	at add.a(SourceFile:1372)
	at km.a(SourceFile:479)
	at add.g(SourceFile:1350)

-- Entity being ticked --
Details:
	Entity Type: Ghast (uj)
	Entity ID: 260
	Entity Name: Гаст
	Entity's Exact location: 3750051,00, 95,41, 3750002,84
	Entity's Block location: World: (3750051,95,3750002), Chunk: (at 3,5,2 in 234378,234375; contains blocks 3750048,0,3750000 to 3750063,255,3750015), Region: (7324,7324; contains chunks 234368,234368 to 234399,234399, blocks 3749888,0,3749888 to 3750399,255,3750399)
	Entity's Momentum: 0,13, 0,09, 0,11
Stacktrace:
	at add.h(SourceFile:1257)
	at km.h(SourceFile:364)

-- Affected level --
Details:
	Level name: Новый мир3231
	All players: 1 total; [kp['denis_1000'/176, l='Новый мир3231', x=3749954,01, y=61,00, z=3750006,79]]
	Chunk stats: ServerChunkCache: 441 Drop: 0
	Level seed: 2541736798521563228
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: 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.u(SourceFile:469)
	at net.minecraft.server.MinecraftServer.t(SourceFile:404)
	at bor.t(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:338)
	at jb.run(SourceFile:581)

-- System Details --
Details:
	Minecraft Version: 13w38a
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_07, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 41893832 bytes (39 MB) / 857604096 bytes (817 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 9230100 (516885600 bytes; 492 MB) allocated, 9230100 (516885600 bytes; 492 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 200 (11200 bytes; 0 MB) allocated, 188 (10528 bytes; 0 MB) used
	Player Count: 1 / 8; [kp['denis_1000'/176, l='Новый мир3231', x=3749954,01, y=61,00, z=3750006,79]]
	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-191065/12402868/