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java.lang.NullPointerException: 	at org.jruby.ir.dataflow.DataFlowProblem.compute_MOP_Solution(DataFlowProblem.java:56)	at org.jruby.ir.passes.LiveVariableAnalysis.execute(LiveVariableAnalysis.java:77)	at org.jruby.ir.passes.CompilerPass.run(CompilerPass.java:111)	at org.jruby.ir.passes.CompilerPass.makeSureDependencyHasRunOnce(CompilerPass.java:133)	at org.jruby.ir.passes.CompilerPass.run(CompilerPass.java:101)	at org.jruby.ir.passes.CompilerPass.run(CompilerPass.java:125)	at org.jruby.ir.IRScope.runCompilerPasses(IRScope.java:502)	at org.jruby.ir.IRScope.prepareForCompilation(IRScope.java:586)	at org.jruby.runtime.MixedModeIRBlockBody.promoteToFullBuild(MixedModeIRBlockBody.java:169)	at org.jruby.runtime.MixedModeIRBlockBody.commonYieldPath(MixedModeIRBlockBody.java:126)	at org.jruby.runtime.IRBlockBody.doYield(IRBlockBody.java:182)	at org.jruby.runtime.BlockBody.yield(BlockBody.java:110)	at org.jruby.runtime.Block.yield(Block.java:167)	at org.jruby.RubyArray.each(RubyArray.java:1734)	at org.jruby.RubyArray$INVOKER$i$0$0$each.call(RubyArray$INVOKER$i$0$0$each.gen)	at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodZeroBlock.call(JavaMethod.java:497)	at org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:77)	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:83)	at org.jruby.ir.instructions.CallBase.interpret(CallBase.java:428)	at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:356)	at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)	at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:84)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:179)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:165)	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:200)	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)	at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:315)	at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)	at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:78)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:144)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:130)	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:192)	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:318)	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:131)	at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:340)	at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)	at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:84)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:179)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:165)	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:200)	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)	at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:315)	at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)	at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:78)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:144)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:130)	at org.jruby.RubyClass.finvoke(RubyClass.java:512)	at org.jruby.RubyBasicObject.send19(RubyBasicObject.java:1662)	at org.jruby.RubyKernel.send19(RubyKernel.java:1987)	at org.jruby.RubyKernel$INVOKER$s$send19.call(RubyKernel$INVOKER$s$send19.gen)	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:200)	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)	at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:315)	at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)	at org.jruby.ir.interpreter.Interpreter.INTERPRET_BLOCK(Interpreter.java:132)	at org.jruby.runtime.MixedModeIRBlockBody.commonYieldPath(MixedModeIRBlockBody.java:148)	at org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:69)	at org.jruby.runtime.Block.call(Block.java:126)	at org.jruby.RubyProc.call(RubyProc.java:324)	at org.jruby.internal.runtime.methods.ProcMethod.call(ProcMethod.java:63)	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:196)	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:192)	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:318)	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:131)	at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:340)	at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)	at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:78)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:144)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:130)	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:192)	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:318)	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:131)	at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:340)	at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)	at org.jruby.ir.interpreter.InterpreterEngine.interpret(InterpreterEngine.java:78)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:144)	at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:130)	at org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:192)	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:318)	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:131)	at org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:340)	at org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:73)	at org.jruby.ir.interpreter.Interpreter.INTERPRET_ROOT(Interpreter.java:112)	at org.jruby.ir.interpreter.Interpreter.execute(Interpreter.java:99)	at org.jruby.ir.interpreter.Interpreter.execute(Interpreter.java:35)	at org.jruby.ir.IRTranslator.execute(IRTranslator.java:42)	at org.jruby.Ruby.runInterpreter(Ruby.java:862)	at org.jruby.Ruby.loadFile(Ruby.java:2960)	at org.jruby.runtime.load.LibrarySearcher$ResourceLibrary.load(LibrarySearcher.java:243)	at org.jruby.runtime.load.LibrarySearcher$FoundLibrary.load(LibrarySearcher.java:34)	at org.jruby.runtime.load.LoadService.tryLoadingLibraryOrScript(LoadService.java:885)	at org.jruby.runtime.load.LoadService.smartLoadInternal(LoadService.java:525)	at org.jruby.runtime.load.LoadService.require(LoadService.java:396)	at org.jruby.RubyKernel.requireCommon(RubyKernel.java:966)	at org.jruby.RubyKernel.require19(RubyKernel.java:959)	at org.jruby.RubyKernel$INVOKER$s$1$0$require19.call(RubyKernel$INVOKER$s$1$0$require19.gen)	at org.jruby.internal.runtime.methods.JavaMethod$JavaMethodOneOrNBlock.call(JavaMethod.java:383)	at org.jruby.internal.runtime.methods.AliasMethod.call(AliasMethod.java:61)	at org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:338)	at org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)