java.lang.InterruptedException: null
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(Unknown Source)
	at java.util.concurrent.Semaphore.acquire(Unknown Source)
	at com.mongodb.internal.connection.ConcurrentPool.acquirePermit(ConcurrentPool.java:182)
	... 38 common frames omitted
Wrapped by: com.mongodb.MongoInterruptedException: Interrupted acquiring a permit to retrieve an item from the pool 
	at com.mongodb.internal.connection.ConcurrentPool.acquirePermit(ConcurrentPool.java:186)
	at com.mongodb.internal.connection.ConcurrentPool.get(ConcurrentPool.java:126)
	at com.mongodb.internal.connection.ConcurrentPool.get(ConcurrentPool.java:109)
	at com.mongodb.internal.connection.PowerOfTwoBufferPool.getBuffer(PowerOfTwoBufferPool.java:76)
	at com.mongodb.connection.SocketStream.getBuffer(SocketStream.java:69)
	at com.mongodb.connection.InternalStreamConnection.getBuffer(InternalStreamConnection.java:514)
	at com.mongodb.connection.ByteBufferBsonOutput.getByteBufferAtIndex(ByteBufferBsonOutput.java:91)
	at com.mongodb.connection.ByteBufferBsonOutput.getCurrentByteBuffer(ByteBufferBsonOutput.java:80)
	at com.mongodb.connection.ByteBufferBsonOutput.writeByte(ByteBufferBsonOutput.java:75)
	at org.bson.io.OutputBuffer.write(OutputBuffer.java:150)
	at org.bson.io.OutputBuffer.writeInt32(OutputBuffer.java:56)
	at com.mongodb.connection.RequestMessage.writeMessagePrologue(RequestMessage.java:171)
	at com.mongodb.connection.RequestMessage.encodeWithMetadata(RequestMessage.java:159)
	at com.mongodb.connection.RequestMessage.encode(RequestMessage.java:147)
	at com.mongodb.connection.CommandHelper.sendMessage(CommandHelper.java:88)
	at com.mongodb.connection.CommandHelper.executeCommand(CommandHelper.java:32)
	at com.mongodb.connection.SaslAuthenticator.sendSaslContinue(SaslAuthenticator.java:121)
	at com.mongodb.connection.SaslAuthenticator.access$100(SaslAuthenticator.java:37)
	at com.mongodb.connection.SaslAuthenticator$1.run(SaslAuthenticator.java:63)
	... 20 common frames omitted
Wrapped by: com.mongodb.MongoSecurityException: Exception authenticating MongoCredential{mechanism=null, userName='composing', source='composing', password=<hidden>, mechanismProperties={}}
	at com.mongodb.connection.SaslAuthenticator.wrapInMongoSecurityException(SaslAuthenticator.java:157)
	at com.mongodb.connection.SaslAuthenticator.access$200(SaslAuthenticator.java:37)
	at com.mongodb.connection.SaslAuthenticator$1.run(SaslAuthenticator.java:66)
	at com.mongodb.connection.SaslAuthenticator$1.run(SaslAuthenticator.java:44)
	at com.mongodb.connection.SaslAuthenticator.doAsSubject(SaslAuthenticator.java:162)
	at com.mongodb.connection.SaslAuthenticator.authenticate(SaslAuthenticator.java:44)
	at com.mongodb.connection.DefaultAuthenticator.authenticate(DefaultAuthenticator.java:32)
	at com.mongodb.connection.InternalStreamConnectionInitializer.authenticateAll(InternalStreamConnectionInitializer.java:109)
	at com.mongodb.connection.InternalStreamConnectionInitializer.initialize(InternalStreamConnectionInitializer.java:46)
	at com.mongodb.connection.InternalStreamConnection.open(InternalStreamConnection.java:116)
	at com.mongodb.connection.UsageTrackingInternalConnection.open(UsageTrackingInternalConnection.java:47)
	at com.mongodb.connection.DefaultConnectionPool$UsageTrackingInternalConnectionItemFactory.create(DefaultConnectionPool.java:494)
	at com.mongodb.connection.DefaultConnectionPool$UsageTrackingInternalConnectionItemFactory.create(DefaultConnectionPool.java:482)
	at com.mongodb.internal.connection.ConcurrentPool.createNewAndReleasePermitIfFailure(ConcurrentPool.java:164)
	at com.mongodb.internal.connection.ConcurrentPool.ensureMinSize(ConcurrentPool.java:158)
	at com.mongodb.connection.DefaultConnectionPool$3.run(DefaultConnectionPool.java:302)
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
Exception thrown during connection pool background maintenance task