---- Minecraft Crash Report ----
// Ooh. Shiny.

Time: 08/02/15 06:01
Description: Exception in server tick loop

java.lang.RuntimeException: Failed to check session lock for world located at ./world, aborting. Stop the server and delete the session.lock in this world to prevent further issues.
    at net.minecraft.server.v1_8_R1.WorldNBTStorage.h(WorldNBTStorage.java:57)
    at net.minecraft.server.v1_8_R1.WorldNBTStorage.<init>(WorldNBTStorage.java:41)
    at net.minecraft.server.v1_8_R1.ServerNBTManager.<init>(SourceFile:19)
    at net.minecraft.server.v1_8_R1.MinecraftServer.a(MinecraftServer.java:249)
    at net.minecraft.server.v1_8_R1.DedicatedServer.init(DedicatedServer.java:211)
    at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:494)
    at java.lang.Thread.run(Thread.java:745)


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

-- System Details --
Details:
    Minecraft Version: 1.8
    Operating System: Linux (amd64) version 3.10.23-xxxx-std-ipv6-64
    Java Version: 1.7.0_75, Oracle Corporation
    Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 791254800 bytes (754 MB) / 1020919808 bytes (973 MB) up to 8520204288 bytes (8125 MB)
    JVM Flags: 4 total; -Xincgc -Xmx8G -XX:PermSize=128m -XX:MaxPermSize=256M
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    CraftBukkit Information:
   Running: CraftBukkit version git-Spigot-29dbaa7-262c777 (MC: 1.8) (Implementing API version 1.8-R0.1-SNAPSHOT) false
   Warnings: DEFAULT
   Threads: { RUNNABLE RMI TCP Accept-0: [java.net.PlainSocketImpl.socketAccept(Native Method), java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398), java.net.ServerSocket.implAccept(ServerSocket.java:530), java.net.ServerSocket.accept(ServerSocket.java:498), sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:399), sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:371), java.lang.Thread.run(Thread.java:745)], RUNNABLE Server console handler: [java.io.FileInputStream.readBytes(Native Method), java.io.FileInputStream.read(FileInputStream.java:272), java.io.BufferedInputStream.fill(BufferedInputStream.java:235), java.io.BufferedInputStream.read(BufferedInputStream.java:254), java.io.FilterInputStream.read(FilterInputStream.java:83), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader$1.read(ConsoleReader.java:167), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:267), org.bukkit.craftbukkit.libs.jline.internal.InputStreamReader.read(InputStreamReader.java:204), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readCharacter(ConsoleReader.java:995), org.bukkit.craftbukkit.libs.jline.console.ConsoleReader.readLine(ConsoleReader.java:1167), net.minecraft.server.v1_8_R1.ThreadCommandReader.run(ThreadCommandReader.java:33)], RUNNABLE Netty Server IO #0: [sun.nio.ch.EPollArrayWrapper.epollWait(Native Method), sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269), sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79), sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:87), sun.nio.ch.SelectorImpl.select(SelectorImpl.java:98), io.netty.channel.nio.NioEventLoop.select(NioEventLoop.java:618), io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:306), io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116), java.lang.Thread.run(Thread.java:745)], TIMED_WAITING process reaper: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:226), java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460), java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:359), java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:942), java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1068), java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130), java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615), java.lang.Thread.run(Thread.java:745)], TIMED_WAITING Server Infinisleeper: [java.lang.Thread.sleep(Native Method), net.minecraft.server.v1_8_R1.ThreadSleepForever.run(SourceFile:64)], RUNNABLE Server thread: [java.lang.Thread.dumpThreads(Native Method), java.lang.Thread.getAllStackTraces(Thread.java:1640), org.bukkit.craftbukkit.v1_8_R1.CraftCrashReport.call(CraftCrashReport.java:28), net.minecraft.server.v1_8_R1.CrashReportSystemDetails.a(SourceFile:78), net.minecraft.server.v1_8_R1.CrashReport.h(CrashReport.java:43), net.minecraft.server.v1_8_R1.CrashReport.<init>(CrashReport.java:32), net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:546), java.lang.Thread.run(Thread.java:745)], WAITING Snooper Timer: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:503), java.util.TimerThread.mainLoop(Timer.java:526), java.util.TimerThread.run(Timer.java:505)], RUNNABLE DestroyJavaVM: [], RUNNABLE RMI TCP Accept-1098: [java.net.PlainSocketImpl.socketAccept(Native Method), java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398), java.net.ServerSocket.implAccept(ServerSocket.java:530), java.net.ServerSocket.accept(ServerSocket.java:498), sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:399), sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:371), java.lang.Thread.run(Thread.java:745)], TIMED_WAITING Spigot Metrics Thread: [java.lang.Object.wait(Native Method), java.util.TimerThread.mainLoop(Timer.java:552), java.util.TimerThread.run(Timer.java:505)], RUNNABLE Signal Dispatcher: [], WAITING Finalizer: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151), java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)], WAITING Thread-5: [sun.misc.Unsafe.park(Native Method), java.util.concurrent.locks.LockSupport.park(LockSupport.java:186), java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2043), java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442), com.mojang.util.QueueLogAppender.getNextLogEvent(QueueLogAppender.java:77), org.bukkit.craftbukkit.v1_8_R1.util.TerminalConsoleWriterThread.run(TerminalConsoleWriterThread.java:25), java.lang.Thread.run(Thread.java:745)], WAITING Java2D Disposer: [java.lang.Object.wait(Native Method), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135), java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:151), sun.java2d.Disposer.run(Disposer.java:145), java.lang.Thread.run(Thread.java:745)], TIMED_WAITING Spigot Watchdog Thread: [java.lang.Thread.sleep(Native Method), org.spigotmc.WatchdogThread.run(WatchdogThread.java:92)], TIMED_WAITING Keep-Alive-Timer: [java.lang.Thread.sleep(Native Method), sun.net.www.http.KeepAliveCache.run(KeepAliveCache.java:172), java.lang.Thread.run(Thread.java:745)], WAITING Reference Handler: [java.lang.Object.wait(Native Method), java.lang.Object.wait(Object.java:503), java.lang.ref.Reference$ReferenceHandler.run(Reference.java:133)], RUNNABLE RMI TCP Accept-0: [java.net.PlainSocketImpl.socketAccept(Native Method), java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398), java.net.ServerSocket.implAccept(ServerSocket.java:530), java.net.ServerSocket.accept(ServerSocket.java:498), sun.management.jmxremote.LocalRMIServerSocketFactory$1.accept(LocalRMIServerSocketFactory.java:52), sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:399), sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:371), java.lang.Thread.run(Thread.java:745)],}
   Recent tasks from -31--1{}
    Profiler Position: N/A (disabled)
    Player Count: 0 / 100; []
    Is Modded: Definitely; Server brand changed to 'Spigot'
    Type: Dedicated Server (map_server.txt)