Watchdog killed server - may be related to boats

Crash occurred while one player was running across a desert while looking at a map and another was sprinting while piloting a boat. Nothing particularly unusual was noted prior to the crash. However, the server log reports a large number of "vehicle moved too quickly" events with regard to the player using the boat, immediately before the crash.

19w05a\: [^crash-2019-01-31_17.38.17-server.txt]

---- Minecraft Crash Report ----
// Who set us up the TNT?

Time: 1/31/19 5:38 PM
Description: Watching Server

java.lang.Error
	at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap.get(Long2ObjectLinkedOpenHashMap.java:700)
	at uf.a(SourceFile:121)
	at uf$a.b(SourceFile:559)
	at ul.e(SourceFile:101)
	at ui.a(SourceFile:46)
	at cfn.a(SourceFile:146)
	at cfn.b(SourceFile:178)
	at ui.a(SourceFile:28)
	at cfn.b(SourceFile:208)
	at ul.a(SourceFile:147)
	at uq.k(SourceFile:247)
	at uq.a(SourceFile:278)
	at ur.a(SourceFile:167)
	at net.minecraft.server.MinecraftServer.b(SourceFile:857)
	at tt.b(SourceFile:342)
	at net.minecraft.server.MinecraftServer.a(SourceFile:796)
	at net.minecraft.server.MinecraftServer.run(SourceFile:664)
	at java.lang.Thread.run(Thread.java:745)


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

-- Head --
Thread: Server Watchdog
Stacktrace:
	at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap.get(Long2ObjectLinkedOpenHashMap.java:700)
	at uf.a(SourceFile:121)
	at uf$a.b(SourceFile:559)
	at ul.e(SourceFile:101)
	at ui.a(SourceFile:46)
	at cfn.a(SourceFile:146)
	at cfn.b(SourceFile:178)
	at ui.a(SourceFile:28)
	at cfn.b(SourceFile:208)
	at ul.a(SourceFile:147)
	at uq.k(SourceFile:247)
	at uq.a(SourceFile:278)
	at ur.a(SourceFile:167)
	at net.minecraft.server.MinecraftServer.b(SourceFile:857)
	at tt.b(SourceFile:342)
	at net.minecraft.server.MinecraftServer.a(SourceFile:796)

-- Thread Dump --
Details:
	Threads: "Server-Worker-10" Id=71 WAITING on java.util.concurrent.ForkJoinPool@75b74954
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.util.concurrent.ForkJoinPool@75b74954
	at java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1821)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1690)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)


"Server-Worker-9" Id=70 RUNNABLE
	at sun.misc.Unsafe.unpark(Native Method)
	at java.util.concurrent.ForkJoinPool.signalWork(ForkJoinPool.java:1646)
	at java.util.concurrent.ForkJoinPool.externalPush(ForkJoinPool.java:2411)
	at java.util.concurrent.ForkJoinPool.execute(ForkJoinPool.java:2645)
	at afk.g(SourceFile:108)
	at afk.a(SourceFile:101)
	at uh.a(SourceFile:124)
	at uh.a(SourceFile:90)
	...


"Server-Worker-6" Id=67 WAITING on java.util.concurrent.ForkJoinPool@75b74954
	at sun.misc.Unsafe.park(Native Method)
	-  waiting on java.util.concurrent.ForkJoinPool@75b74954
	at java.util.concurrent.ForkJoinPool.awaitWork(ForkJoinPool.java:1821)
	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1690)
	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)


"Netty Epoll Server IO #7" Id=44 RUNNABLE (in native)
	at io.netty.channel.epoll.Native.epollWait0(Native Method)
	at io.netty.channel.epoll.Native.epollWait(Native.java:114)
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #6" Id=43 RUNNABLE (in native)
	at io.netty.channel.epoll.Native.epollWait0(Native Method)
	at io.netty.channel.epoll.Native.epollWait(Native.java:114)
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #5" Id=39 RUNNABLE (in native)
	at io.netty.channel.epoll.Native.epollWait0(Native Method)
	at io.netty.channel.epoll.Native.epollWait(Native.java:114)
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #4" Id=38 RUNNABLE (in native)
	at io.netty.channel.epoll.Native.epollWait0(Native Method)
	at io.netty.channel.epoll.Native.epollWait(Native.java:114)
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #3" Id=37 RUNNABLE
	at io.netty.channel.epoll.Native.epollWait0(Native Method)
	at io.netty.channel.epoll.Native.epollWait(Native.java:114)
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #2" Id=31 RUNNABLE (in native)
	at io.netty.channel.epoll.Native.epollWait0(Native Method)
	at io.netty.channel.epoll.Native.epollWait(Native.java:114)
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:745)


"Server Watchdog" Id=30 RUNNABLE
	at sun.management.ThreadImpl.dumpThreads0(Native Method)
	at sun.management.ThreadImpl.dumpAllThreads(ThreadImpl.java:446)
	at tw.run(SourceFile:45)
	at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #1" Id=26 RUNNABLE
	at io.netty.channel.epoll.Native.epollWait0(Native Method)
	at io.netty.channel.epoll.Native.epollWait(Native.java:114)
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:745)


"Netty Epoll Server IO #0" Id=22 RUNNABLE (in native)
	at io.netty.channel.epoll.Native.epollWait0(Native Method)
	at io.netty.channel.epoll.Native.epollWait(Native.java:114)
	at io.netty.channel.epoll.EpollEventLoop.epollWait(EpollEventLoop.java:239)
	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:256)
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
	at java.lang.Thread.run(Thread.java:745)


"ObjectCleanerThread" Id=21 TIMED_WAITING on java.lang.ref.ReferenceQueue$Lock@7b70b992
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.ReferenceQueue$Lock@7b70b992
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
	at io.netty.util.internal.ObjectCleaner$1.run(ObjectCleaner.java:54)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.lang.Thread.run(Thread.java:745)


"Server console handler" Id=20 RUNNABLE (in native)
	at java.io.FileInputStream.readBytes(Native Method)
	at java.io.FileInputStream.read(FileInputStream.java:255)
	at java.io.BufferedInputStream.read1(BufferedInputStream.java:284)
	at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
	-  locked java.io.BufferedInputStream@7f4f2224
	at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
	at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
	at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
	-  locked java.io.InputStreamReader@3a4db3a9
	at java.io.InputStreamReader.read(InputStreamReader.java:184)
	...


"DestroyJavaVM" Id=19 RUNNABLE


"Server thread" Id=16 RUNNABLE
	at it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap.get(Long2ObjectLinkedOpenHashMap.java:700)
	at uf.a(SourceFile:121)
	at uf$a.b(SourceFile:559)
	at ul.e(SourceFile:101)
	at ui.a(SourceFile:46)
	at cfn.a(SourceFile:146)
	at cfn.b(SourceFile:178)
	at ui.a(SourceFile:28)
	...


"Server Infinisleeper" Id=17 TIMED_WAITING
	at java.lang.Thread.sleep(Native Method)
	at tt$1.run(SourceFile:92)


"Snooper Timer" Id=15 WAITING on java.util.TaskQueue@757fb05d
	at java.lang.Object.wait(Native Method)
	-  waiting on java.util.TaskQueue@757fb05d
	at java.lang.Object.wait(Object.java:502)
	at java.util.TimerThread.mainLoop(Timer.java:526)
	at java.util.TimerThread.run(Timer.java:505)


"Signal Dispatcher" Id=4 RUNNABLE


"Finalizer" Id=3 WAITING on java.lang.ref.ReferenceQueue$Lock@bbd2b49
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.ReferenceQueue$Lock@bbd2b49
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)
	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:164)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)


"Reference Handler" Id=2 WAITING on java.lang.ref.Reference$Lock@d657618
	at java.lang.Object.wait(Native Method)
	-  waiting on java.lang.ref.Reference$Lock@d657618
	at java.lang.Object.wait(Object.java:502)
	at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157)



Stacktrace:
	at tw.run(SourceFile:61)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 19w05a
	Operating System: Linux (amd64) version 3.16.0-6-amd64
	Java Version: 1.8.0_40, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 76896576 bytes (73 MB) / 2812280832 bytes (2682 MB) up to 5727322112 bytes (5462 MB)
	JVM Flags: 5 total; -XX:MaxGCPauseMillis=100 -XX:+PrintGC -Xmx6G -Xmn2G -XX:+UseLargePages
	Player Count: 2 / 20; [ut['leepyrzqxgl'/132359, l='world', x=1287.72, y=67.00, z=-203.06], ut['davidpyrzqxgl'/175509, l='world', x=158.79, y=62.07, z=-221.68]]
	Data Packs: vanilla
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)