The request for url http://logstashserver:5000/jenkins_queue/ has failed.
org.json.JSONException: A JSONArray text must start with '[' at 1 [character 2 line 1]
	at org.json.JSONTokener.syntaxError(JSONTokener.java:433)
	at org.json.JSONArray.<init>(JSONArray.java:105)
	at org.json.JSONArray.<init>(JSONArray.java:144)
	at com.mashape.unirest.http.JsonNode.<init>(JsonNode.java:48)
Caused: java.lang.RuntimeException
	at com.mashape.unirest.http.JsonNode.<init>(JsonNode.java:51)
	at com.mashape.unirest.http.HttpResponse.<init>(HttpResponse.java:95)
Caused: java.lang.RuntimeException
	at com.mashape.unirest.http.HttpResponse.<init>(HttpResponse.java:106)
	at com.mashape.unirest.http.HttpClientHelper$1.completed(HttpClientHelper.java:82)
	at com.mashape.unirest.http.HttpClientHelper$1.completed(HttpClientHelper.java:75)
	at org.apache.http.concurrent.BasicFuture.completed(BasicFuture.java:119)
	at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.responseCompleted(DefaultClientExchangeHandlerImpl.java:173)
	at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.processResponse(HttpAsyncRequestExecutor.java:355)
	at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.inputReady(HttpAsyncRequestExecutor.java:242)
	at org.apache.http.impl.nio.client.LoggingAsyncRequestExecutor.inputReady(LoggingAsyncRequestExecutor.java:87)
	at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:264)
Caused: com.mashape.unirest.http.exceptions.UnirestException
	at com.mashape.unirest.http.HttpClientHelper$1.failed(HttpClientHelper.java:86)
	at org.apache.http.concurrent.BasicFuture.failed(BasicFuture.java:134)
	at org.apache.http.impl.nio.client.DefaultClientExchangeHandlerImpl.failed(DefaultClientExchangeHandlerImpl.java:258)
	at org.apache.http.nio.protocol.HttpAsyncRequestExecutor.exception(HttpAsyncRequestExecutor.java:123)
	at org.apache.http.impl.nio.DefaultNHttpClientConnection.consumeInput(DefaultNHttpClientConnection.java:275)
	at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:73)
	at org.apache.http.impl.nio.client.InternalIODispatch.onInputReady(InternalIODispatch.java:37)
	at org.apache.http.impl.nio.reactor.AbstractIODispatch.inputReady(AbstractIODispatch.java:113)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.readable(BaseIOReactor.java:159)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvent(AbstractIOReactor.java:338)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.processEvents(AbstractIOReactor.java:316)
	at org.apache.http.impl.nio.reactor.AbstractIOReactor.execute(AbstractIOReactor.java:277)
	at org.apache.http.impl.nio.reactor.BaseIOReactor.execute(BaseIOReactor.java:105)
	at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor$Worker.run(AbstractMultiworkerIOReactor.java:584)
	at java.lang.Thread.run(Thread.java:748)