server closes every few min

---- Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 12/31/15 12:43 AM
Description: Watching Server

java.lang.Error
at adm.a(SourceFile:204)
at adm.a(SourceFile:217)
at adm.e(SourceFile:213)
at adm.a(SourceFile:953)
at pk.d(SourceFile:522)
at pr.g(SourceFile:1217)
at pr.m(SourceFile:1460)
at ps.m(SourceFile:339)
at ph.m(SourceFile:126)
at tm.m(SourceFile:38)
at tn.m(SourceFile:56)
at pr.t_(SourceFile:1300)
at ps.t_(SourceFile:211)
at adm.a(SourceFile:1408)
at le.a(SourceFile:597)
at adm.g(SourceFile:1386)
at adm.i(SourceFile:1279)
at le.i(SourceFile:478)
at net.minecraft.server.MinecraftServer.B(SourceFile:607)
at ko.B(SourceFile:299)
at net.minecraft.server.MinecraftServer.A(SourceFile:535)
at net.minecraft.server.MinecraftServer.run(SourceFile:451)
at java.lang.Thread.run(Unknown Source)

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

– Head –
Stacktrace:
at adm.a(SourceFile:204)
at adm.a(SourceFile:217)
at adm.e(SourceFile:213)
at adm.a(SourceFile:953)
at pk.d(SourceFile:522)
at pr.g(SourceFile:1217)
at pr.m(SourceFile:1460)
at ps.m(SourceFile:339)
at ph.m(SourceFile:126)
at tm.m(SourceFile:38)
at tn.m(SourceFile:56)
at pr.t_(SourceFile:1300)
at ps.t_(SourceFile:211)
at adm.a(SourceFile:1408)
at le.a(SourceFile:597)
at adm.g(SourceFile:1386)
at adm.i(SourceFile:1279)
at le.i(SourceFile:478)
at net.minecraft.server.MinecraftServer.B(SourceFile:607)
at ko.B(SourceFile:299)
at net.minecraft.server.MinecraftServer.A(SourceFile:535)

– Thread Dump –
Details:
Threads: "File IO Thread" Id=47 TIMED_WAITING
at java.lang.Thread.sleep(Native Method)
at auc.c(SourceFile:51)
at auc.run(SourceFile:30)
at java.lang.Thread.run(Unknown Source)

"Netty Server IO #1" Id=27 RUNNABLE
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)

• locked io.netty.channel.nio.SelectedSelectionKeySet@33229c
• locked java.util.Collections$UnmodifiableSet@f4c12a
• locked sun.nio.ch.WindowsSelectorImpl@cb49ec
  at sun.nio.ch.SelectorImpl.select(Unknown Source)
  at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622)
  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310)
  ...

"Server Watchdog" Id=43 RUNNABLE
at sun.management.ThreadImpl.dumpThreads0(Native Method)
at sun.management.ThreadImpl.dumpAllThreads(Unknown Source)
at kp.run(SourceFile:43)
at java.lang.Thread.run(Unknown Source)

"Netty Server IO #0" Id=26 RUNNABLE (in native)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0(Native Method)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.poll(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl$SubSelector.access$400(Unknown Source)
at sun.nio.ch.WindowsSelectorImpl.doSelect(Unknown Source)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(Unknown Source)

• locked io.netty.channel.nio.SelectedSelectionKeySet@1c9cb11
• locked java.util.Collections$UnmodifiableSet@992a76
• locked sun.nio.ch.WindowsSelectorImpl@a24c1e
  at sun.nio.ch.SelectorImpl.select(Unknown Source)
  at io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:622)
  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:310)
  ...

"D3D Screen Updater" Id=24 TIMED_WAITING on java.lang.Object@18f3cf
at java.lang.Object.wait(Native Method)

• waiting on java.lang.Object@18f3cf
  at sun.java2d.d3d.D3DScreenUpdateManager.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)

"DestroyJavaVM" Id=22 RUNNABLE

"Server thread" Id=20 RUNNABLE
at adm.a(SourceFile:204)
at adm.a(SourceFile:217)
at adm.e(SourceFile:213)
at adm.a(SourceFile:953)
at pk.d(SourceFile:522)
at pr.g(SourceFile:1217)
at pr.m(SourceFile:1460)
at ps.m(SourceFile:339)
...

"TimerQueue" Id=18 TIMED_WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@b37c8e
at sun.misc.Unsafe.park(Native Method)

• waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@b37c8e
  at java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(Unknown Source)
  at java.util.concurrent.DelayQueue.take(Unknown Source)
  at javax.swing.TimerQueue.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)

Number of locked synchronizers = 1

• java.util.concurrent.locks.ReentrantLock$NonfairSync@1e6345e

"AWT-EventQueue-0" Id=16 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@f309fa
at sun.misc.Unsafe.park(Native Method)

• waiting on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@f309fa
  at java.util.concurrent.locks.LockSupport.park(Unknown Source)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(Unknown Source)
  at java.awt.EventQueue.getNextEvent(Unknown Source)
  at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
  at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
  at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
  at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
  ...

"AWT-Windows" Id=14 RUNNABLE (in native)
at sun.awt.windows.WToolkit.eventLoop(Native Method)
at sun.awt.windows.WToolkit.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

"AWT-Shutdown" Id=13 WAITING on java.lang.Object@11c1f20
at java.lang.Object.wait(Native Method)

• waiting on java.lang.Object@11c1f20
  at java.lang.Object.wait(Unknown Source)
  at sun.awt.AWTAutoShutdown.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)

"Java2D Disposer" Id=12 WAITING on java.lang.ref.ReferenceQueue$Lock@1a88919
at java.lang.Object.wait(Native Method)

• waiting on java.lang.ref.ReferenceQueue$Lock@1a88919
  at java.lang.ref.ReferenceQueue.remove(Unknown Source)
  at java.lang.ref.ReferenceQueue.remove(Unknown Source)
  at sun.java2d.Disposer.run(Unknown Source)
  at java.lang.Thread.run(Unknown Source)

"Server Infinisleeper" Id=11 TIMED_WAITING
at java.lang.Thread.sleep(Native Method)
at ko$1.run(SourceFile:65)

"Snooper Timer" Id=10 TIMED_WAITING on java.util.TaskQueue@3ada2e
at java.lang.Object.wait(Native Method)

• waiting on java.util.TaskQueue@3ada2e
  at java.util.TimerThread.mainLoop(Unknown Source)
  at java.util.TimerThread.run(Unknown Source)

"Attach Listener" Id=5 RUNNABLE

"Signal Dispatcher" Id=4 RUNNABLE

"Finalizer" Id=3 WAITING on java.lang.ref.ReferenceQueue$Lock@c2af0a
at java.lang.Object.wait(Native Method)

• waiting on java.lang.ref.ReferenceQueue$Lock@c2af0a
  at java.lang.ref.ReferenceQueue.remove(Unknown Source)
  at java.lang.ref.ReferenceQueue.remove(Unknown Source)
  at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)

"Reference Handler" Id=2 WAITING on java.lang.ref.Reference$Lock@1724dad
at java.lang.Object.wait(Native Method)

• waiting on java.lang.ref.Reference$Lock@1724dad
  at java.lang.Object.wait(Unknown Source)
  at java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)

Stacktrace:
at kp.run(SourceFile:59)
at java.lang.Thread.run(Unknown Source)

– System Details –
Details:
Minecraft Version: 1.8.9
Operating System: Windows 10 (x86) version 10.0
Java Version: 1.8.0_66, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 329609944 bytes (314 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
Profiler Position: N/A (disabled)
Player Count: 1 / 20; [lf['rebelangel24'/620, l='world', x=6916.76, y=67.92, z=-633.42]]
Is Modded: Unknown (can't tell)
Type: Dedicated Server (map_server.txt)