Add Thread stack
	at sun.misc.Unsafe.park(Unsafe.java)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:867)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1197)
	at java.util.concurrent.locks.ReentrantReadWriteLock$WriteLock.lock(ReentrantReadWriteLock.java:945)
	at org.basex.core.locks.Locking.acquire(Locking.java:139)
	at org.basex.core.locks.Locking.acquire(Locking.java:95)
	at org.basex.core.jobs.Job.register(Job.java:46)
	at org.basex.core.Command.execute(Command.java:90)
	at org.basex.api.client.LocalSession.execute(LocalSession.java:132)
	at org.basex.api.client.Session.execute(Session.java:36)
	at basextest.BaseXDeadlock$1.run(BaseXDeadlock.java:52)

Primary Read stack
	at java.lang.Object.wait(Object.java)
	at java.io.PipedInputStream.awaitSpace(PipedInputStream.java:274)
	at java.io.PipedInputStream.receive(PipedInputStream.java:232)
	at java.io.PipedOutputStream.write(PipedOutputStream.java:149)
	at org.basex.io.out.BufferOutput.flush(BufferOutput.java:60)
	at org.basex.io.out.BufferOutput.write(BufferOutput.java:54)
	at org.basex.io.out.PrintOutput.write(PrintOutput.java:66)
	at org.basex.io.out.PrintOutput.print(PrintOutput.java:76)
	at org.basex.io.out.NewlineOutput.print(NewlineOutput.java:33)
	at org.basex.io.serial.AdaptiveSerializer.printChar(AdaptiveSerializer.java:115)
	at org.basex.io.serial.OutputSerializer.printChars(OutputSerializer.java:104)
	at org.basex.io.serial.BaseXSerializer.atomic(BaseXSerializer.java:43)
	at org.basex.io.serial.Serializer.serialize(Serializer.java:113)
	at org.basex.io.serial.AdaptiveSerializer.serialize(AdaptiveSerializer.java:66)
	at org.basex.core.cmd.AQuery.query(AQuery.java:95)
	at org.basex.core.cmd.XQuery.run(XQuery.java:22)
	at org.basex.core.Command.run(Command.java:257)
	at org.basex.core.Command.execute(Command.java:93)
	at org.basex.api.client.LocalSession.execute(LocalSession.java:132)
	at org.basex.api.client.Session.execute(Session.java:36)
	at basextest.BaseXDeadlock$2.run(BaseXDeadlock.java:72)

Secondary Read stack
	at sun.misc.Unsafe.park(Unsafe.java)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:186)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:834)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireShared(AbstractQueuedSynchronizer.java:964)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1282)
	at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:731)
	at org.basex.core.locks.Locking.acquire(Locking.java:141)
	at org.basex.core.locks.Locking.acquire(Locking.java:95)
	at org.basex.core.jobs.Job.register(Job.java:46)
	at org.basex.core.Command.execute(Command.java:90)
	at org.basex.api.client.LocalSession.execute(LocalSession.java:132)
	at org.basex.api.client.Session.execute(Session.java:36)
	at basextest.BaseXDeadlock$3.run(BaseXDeadlock.java:92)