[MC-15582] Server crashes without any plugins or modifications

Our server (no mods and no plugins! original minecraft server! no bukkit or anything like this!) crashes even if there is no player on the server. Crash Report is attached.

Environment

From the crash-report:

– System Details –
Details:
Minecraft Version: 1.5.2
Operating System: Linux (amd64) version 2.6.32-45-generic
Java Version: 1.7.0_03, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 92175840 bytes (87 MB) / 216530944 bytes (206 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xmx1024M -Xms192M
AABB Pool Size: 2489 (139384 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: No suspicious classes found.
IntCache: cache: 2, tcache: 0, allocated: 1, tallocated: 63
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1555 (87080 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Player Count: 0 / 10; []
Is Modded: Unknown (can't tell)
Type: Dedicated Server (map_server.txt)

Linked issues

duplicates 1

MC-3583 java.lang.NullPointerException: Exception ticking world (at ml.c(SourceFile:199)) (Corrupted Nether chunks) Resolved

Attachments

crash-2013-05-12_08.59.53-server.txt

Comments 3

kumasasa 2013-05-12T13:40:23Z

Note:

Description: Exception ticking world
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:806)
	at java.util.HashMap$KeyIterator.next(HashMap.java:841)
	at iy.c(SourceFile:198)
	at iz.b(SourceFile:122)
	at net.minecraft.server.MinecraftServer.r(SourceFile:454)

migrated 2013-05-12T13:53:57Z

Duplicate of MC-12341.

kumasasa 2013-06-13T05:45:49Z

Your Java is out of date. Please update your Java to the latest version: http://www.java.com/en/download/. Keep in mind that when using a 32-bit browser on a 64-bit OS the automatic version detection will only show the 32-bit version of Java, the 64-bit version needs to be downloaded manually: http://www.java.com/en/download/manual.jsp.