java.lang.NullPointerException: null
	at org.optaplanner.core.impl.heuristic.thread.MoveThreadRunner.getCalculationCount(MoveThreadRunner.java:185)
	at org.optaplanner.core.impl.constructionheuristic.decider.MultiThreadedConstructionHeuristicDecider.phaseEnded(MultiThreadedConstructionHeuristicDecider.java:123)
	at org.optaplanner.core.impl.constructionheuristic.DefaultConstructionHeuristicPhase.phaseEnded(DefaultConstructionHeuristicPhase.java:158)
	at org.optaplanner.core.impl.constructionheuristic.DefaultConstructionHeuristicPhase.solve(DefaultConstructionHeuristicPhase.java:102)
	at org.optaplanner.core.impl.solver.AbstractSolver.runPhases(AbstractSolver.java:87)
	at org.optaplanner.core.impl.solver.DefaultSolver.solve(DefaultSolver.java:191)
	at org.optaplanner.examples.common.app.SolveAllTurtleTest.buildAndSolve(SolveAllTurtleTest.java:75)
	at org.optaplanner.examples.common.app.SolveAllTurtleTest.runFastAndFullAssert(SolveAllTurtleTest.java:59)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)