Regression

org.eclipse.rdf4j.sail.federation.SPARQLBuilderTest.test[1(Join)-:]

Failing for the past 1 build (Since Unstable#66 )
Took 8 ms.

Error Message

java.util.NoSuchElementException: The iteration has been closed.

Stacktrace

org.eclipse.rdf4j.query.QueryEvaluationException: java.util.NoSuchElementException: The iteration has been closed.
	at org.eclipse.rdf4j.sail.federation.SPARQLBuilderTest.test(SPARQLBuilderTest.java:78)
Caused by: java.util.NoSuchElementException: The iteration has been closed.