FULL PRODUCT VERSION :
java version "1.8.0_162"
Java(TM) SE Runtime Environment (build 1.8.0_162-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.162-b12, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux karaz-a-pr 4.10.0-37-generic #41~16.04.1-Ubuntu SMP Fri Oct 6 22:42:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

EXTRA RELEVANT SYSTEM CONFIGURATION :
Libraries in use when compiling: headless jars from Eclipse Oxygen 4.7.0 and headless jars from Xtext 2.13.0

A DESCRIPTION OF THE PROBLEM :
While updating a product to a newer version of Eclipse Xtext, our command line build started failing with the exception shown below. Our code did not change during the update, but our dependencies (mostly Eclipse headless jars) did. Unfortunately the code being built is large, and I don't have an hint as to which jar/java source makes the compiler crash, so I cannot provide a small reproducable example yet.

However, if you're willing to provide me guidance to narrow down, I'm willing to further investigate to provide a small example once I know which code is causing the problem; as this is blocking our migration.

13:02:31.673 [ERROR] [system.err] java.lang.NullPointerException
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.dummyMethodType(Attr.java:4731)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.initTypeIfNeeded(Attr.java:4717)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitMethodDef(Attr.java:4778)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:57)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitClassDef(TreeScanner.java:80)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitClassDef(Attr.java:4773)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:693)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitNewClass(TreeScanner.java:208)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitNewClass(Attr.java:4804)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1516)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitLambda(TreeScanner.java:221)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitLambda(Attr.java:4836)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1624)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitReturn(TreeScanner.java:185)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1384)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:57)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitBlock(TreeScanner.java:105)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitLambda(TreeScanner.java:221)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitLambda(Attr.java:4836)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1624)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.preFlow(Attr.java:2452)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.canLambdaBodyCompleteNormally(DeferredAttr.java:718)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.visitLambda(DeferredAttr.java:664)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1624)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.complete(DeferredAttr.java:617)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:246)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.access$100(DeferredAttr.java:132)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode.process(DeferredAttr.java:564)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrContext.complete(DeferredAttr.java:480)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.Infer.instantiateMethod(Infer.java:182)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:567)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1446)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1633)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1704)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1677)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2436)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3097)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3348)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2433)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2427)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3396)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3278)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1825)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$2.complete(DeferredAttr.java:285)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:246)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:233)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.recover(DeferredAttr.java:883)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.typeOf(DeferredAttr.java:872)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$ResolveDeferredRecoveryMap.typeOf(Resolve.java:2310)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredTypeMap.apply(DeferredAttr.java:839)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.apply(DeferredAttr.java:862)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.code.Type.map(Type.java:221)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkMethod(Attr.java:3873)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkIdInternal(Attr.java:3616)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3523)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3502)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3489)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3371)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1825)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitReturn(Attr.java:1686)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1384)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:661)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.canLambdaBodyCompleteNormally(DeferredAttr.java:716)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.visitLambda(DeferredAttr.java:664)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1624)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.complete(DeferredAttr.java:617)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:246)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.access$100(DeferredAttr.java:132)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode.process(DeferredAttr.java:564)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrContext.complete(DeferredAttr.java:480)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.Infer.instantiateMethod(Infer.java:182)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:567)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1446)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1633)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1704)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1677)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2436)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3097)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3348)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2433)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2427)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3396)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3278)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1825)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr.attribSpeculative(DeferredAttr.java:387)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$2.complete(DeferredAttr.java:280)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:246)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:233)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$MethodResultInfo.check(Resolve.java:1008)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$4.checkArg(Resolve.java:835)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$AbstractMethodCheck.argumentsAcceptable(Resolve.java:735)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$4.argumentsAcceptable(Resolve.java:844)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:579)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1446)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1633)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1704)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1677)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2436)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3097)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3348)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2433)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2427)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3396)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3278)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1825)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitReturn(Attr.java:1686)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1384)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:661)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1124)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1013)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4364)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4272)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4201)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitClassDef(Attr.java:870)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:693)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4364)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4272)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4201)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4176)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1248)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.main.Main.compile(Main.java:523)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
13:02:31.696 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:48)
13:02:31.696 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:35)
13:02:31.696 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:98)
13:02:31.696 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:51)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:37)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:35)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:25)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:207)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:192)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:124)
13:02:31.697 [ERROR] [system.err] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
13:02:31.697 [ERROR] [system.err] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
13:02:31.697 [ERROR] [system.err] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
13:02:31.698 [ERROR] [system.err] at java.lang.reflect.Method.invoke(Method.java:498)
13:02:31.698 [ERROR] [system.err] at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
13:02:31.698 [ERROR] [system.err] at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:50)
13:02:31.698 [ERROR] [system.err] at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
13:02:31.698 [ERROR] [system.err] at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
13:02:31.698 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:124)
13:02:31.698 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
13:02:31.699 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
13:02:31.699 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
13:02:31.699 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:113)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:95)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:73)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:88)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
13:02:31.701 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
13:02:31.701 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
13:02:31.701 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
13:02:31.701 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
13:02:31.702 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
13:02:31.702 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:623)
13:02:31.702 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:578)
13:02:31.702 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)
13:02:31.702 [ERROR] [system.err] at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
13:02:31.702 [ERROR] [system.err] at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
13:02:31.702 [ERROR] [system.err] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
13:02:31.702 [ERROR] [system.err] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
13:02:31.703 [ERROR] [system.err] at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
13:02:31.703 [ERROR] [system.err] at java.lang.Thread.run(Thread.java:748)

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
I'm providing the command line that triggers the bug, so that the list of jars being used as dependencies is recorded; but this does not narrow down the problem yet:

java -source 1.8 -target 1.8 -d /media/truecrypt2/proventools2/smdt/com.provenrun.smdt.smil/build/classes/java/main -g -sourcepath -proc:none -XDuseUnsharedTable=true -classpath /media/truecrypt2/proventools2/smdt/com.provenrun.shared/parboiled-core-1.1.7.jar:/media/truecrypt2/proventools2/smdt/com.provenrun.shared/parboiled-java-1.1.7.jar:/media/truecrypt2/proventools2/smdt/com.provenrun.shared/pegdown-1.6.0.jar:/media/truecrypt2/proventools2/smdt/com.provenrun.shared/org.eclipse.xtext.builder_2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtext/org.eclipse.xtext.xbase/2.13.0/6b05d2da6757630bb78b86cb2c5270bb091403dc/org.eclipse.xtext.xbase-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtext/org.eclipse.xtext.common.types/2.13.0/84afcc05b2d2da309cdd25afe55f014feb950a07/org.eclipse.xtext.common.types-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtext/org.eclipse.xtext.generator/2.13.0/4165f8c67fa4cf1ef48c4d900b7008230a89ab1f/org.eclipse.xtext.generator-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtext/org.eclipse.xtext.ecore/2.13.0/27930736fe7ff5885a509245f05e1c0ec588dcf8/org.eclipse.xtext.ecore-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtext/org.eclipse.xtext.xtext.generator/2.13.0/1b2c5fd20f8adbc22a609e8e915663ccbaa10a4d/org.eclipse.xtext.xtext.generator-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtext/org.eclipse.xtext/2.13.0/ed3177cfd648405b137fb1d8ef7586ef172a6f93/org.eclipse.xtext-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.core/runtime/3.10.0-v20140318-2214/a537de26c1e322a68536a3a2c3cb2389d5dbcb00/runtime-3.10.0-v20140318-2214.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtext/org.eclipse.xtext.util/2.13.0/5933123f49e2c0d6ba64f98026a696ccb6a57c14/org.eclipse.xtext.util-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtend/org.eclipse.xtend.lib/2.13.0/accfb60dda659a31dddb5823d4fbcc7c0c1aa4ae/org.eclipse.xtend.lib-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/log4j/log4j/1.2.16/7999a63bfccbc7c247a9aea10d83d4272bd492c6/log4j-1.2.16.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.platform/org.eclipse.equinox.common/3.8.0/9a166c07468f7f10c03a9125669406baa05b80d0/org.eclipse.equinox.common-3.8.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.platform/org.eclipse.osgi/3.11.2/e8d062db7f518a41e6b4029a8005b49c855c5aac/org.eclipse.osgi-3.11.2.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.emf/org.eclipse.emf.common/2.10.1/dcf625c8b55614dab07a93965a7ca390d5d728cf/org.eclipse.emf.common-2.10.1.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.emf/org.eclipse.emf.ecore.xmi/2.12.0/ad136ea23fcdaebec17ec6c730dfdf74b2077c37/org.eclipse.emf.ecore.xmi-2.12.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.emf/org.eclipse.emf.mwe2.lib/2.9.1.201705291010/dcae6853d5a9b682136831273cd54ffd85101f35/org.eclipse.emf.mwe2.lib-2.9.1.201705291010.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.emf/org.eclipse.emf.mwe.utils/1.3.21.201705291010/6a334df2cf87d69329a252d4f0e4c70d9b128060/org.eclipse.emf.mwe.utils-1.3.21.201705291010.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.emf/org.eclipse.emf.mwe.core/1.3.21.201705291010/19349a7382df44535546954b99a9189979734228/org.eclipse.emf.mwe.core-1.3.21.201705291010.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.emf/org.eclipse.emf.mwe2.runtime/2.9.1.201705291010/cb005330080857ba5ca898cd4c4f5d164625bd48/org.eclipse.emf.mwe2.runtime-2.9.1.201705291010.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/com.google.inject/guice/4.0/f990a43d3725781b6db7cd0acf0a8b62dfd1649/guice-4.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.antlr/antlr-runtime/3.2/31c746001016c6226bd7356c9f87a6a084ce3715/antlr-runtime-3.2.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtend/org.eclipse.xtend.lib.macro/2.13.0/4897a782f69cee9326ea1ae7e10078b4d738463/org.eclipse.xtend.lib.macro-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xtext/org.eclipse.xtext.xbase.lib/2.13.0/ea0734bda785af01c6f02298d25ed3189dd5a2ac/org.eclipse.xtext.xbase.lib-2.13.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/com.google.guava/guava/21.0/3a3d111be1be1b745edfa7d91678a12d7ed38709/guava-21.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.apache.log4j/com.springsource.org.apache.log4j/1.2.15/c506424c00adc6df9a367632c45351fb48e52216/com.springsource.org.apache.log4j-1.2.15.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.core/jobs/3.6.0-v20140424-0053/4f355c5efd8a39a03f7b0ff4cfcf24b33a968c12/jobs-3.6.0-v20140424-0053.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.core/org.eclipse.core.resources/3.8.101.v20130717-0806/5fc550dca872450b3929ff0d5903cc1b1950d03d/org.eclipse.core.resources-3.8.101.v20130717-0806.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.equinox/org.eclipse.equinox.common/3.6.200.v20130402-1505/f930417b1602dafb370d7b9ed7871c87e0b355b1/org.eclipse.equinox.common-3.6.200.v20130402-1505.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.jdt/org.eclipse.jdt.annotation/2.0.0/26499bd40a9244f0f94c2170d01fc7f8482ca3/org.eclipse.jdt.annotation-2.0.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xpand/org.eclipse.xpand/2.0.0/ef63c566dd7791068e1d25e42bd5faee4e65339d/org.eclipse.xpand-2.0.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.xpand/org.eclipse.xtend/2.0.0/c6e0484437f32e50fcff43ac7bdec7a8b1878d59/org.eclipse.xtend-2.0.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse/osgi/3.10.0-v20140606-1445/afe258a6e5d2dcd8fa4c894f53fdc78e49984e3c/osgi-3.10.0-v20140606-1445.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.core/contenttype/3.4.200/335ae99862a28b05778fbd10fbf65e000ae3cfe/contenttype-3.4.200.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.equinox/app/1.3.200-v20130910-1609/659921d8f404ee6161c29bd6a6798631208c3633/app-1.3.200-v20130910-1609.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.equinox/registry/3.5.400-v20140428-1507/5f933a7fbea4c96c74c50b4d453e59b3185e6aec/registry-3.5.400-v20140428-1507.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.equinox/preferences/3.5.200-v20140224-1527/9ea0f3c0b18d0a1e904743b19c2f7c0c7163c61e/preferences-3.5.200-v20140224-1527.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.equinox/common/3.6.200/f930417b1602dafb370d7b9ed7871c87e0b355b1/common-3.6.200.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.emf/org.eclipse.emf.ecore/2.12.0/644751074e8b448526815f9bdeda26770df2e213/org.eclipse.emf.ecore-2.12.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.ow2.asm/asm-commons/5.0.1/7b7147a390a93a14d2edfdcf3f7b0e87a0939c3e/asm-commons-5.0.1.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.emf/org.eclipse.emf.codegen/2.11.0/fc79590ac6de1f24c79f7b133d304831776c998b/org.eclipse.emf.codegen-2.11.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.ow2.asm/asm-tree/5.0.1/1b1e6e9d869acd704056d0a4223071a511c619e6/asm-tree-5.0.1.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.eclipse.emf/org.eclipse.emf.codegen.ecore/2.12.0/5ba8598688ee6c5c2cdc0539560313f8fe196259/org.eclipse.emf.codegen.ecore-2.12.0.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/com.ibm.icu/icu4j/52.1/7dbc327670673acd14b487d120f05747d712c1c0/icu4j-52.1.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/org.ow2.asm/asm/5.0.1/2fd56467a018aafe6ec6a73ccba520be4a7e1565/asm-5.0.1.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/commons-cli/commons-cli/1.2/2bf96b7aa8b611c177d329452af1dc933e14501c/commons-cli-1.2.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/commons-logging/commons-logging/1.1.3/f6f66e966c70a83ffbdb6f17a0919eaf7c8aca7f/commons-logging-1.1.3.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/6975da39a7040257bd51d21a231b76c915872d38/javax.inject-1.jar:/home/churlin/.gradle/caches/modules-2/files-2.1/aopalliance/aopalliance/1.0/235ba8b489512805ac13a8f9ea77a1ca5ebe3e8/aopalliance-1.0.jar -Xlint:all -Xlint:-rawtypes -Xlint:-fallthrough ... a lot of proprietary java files

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expected javac to build a jar.
ACTUAL -
javac crashed with a NullPointerException

ERROR MESSAGES/STACK TRACES THAT OCCUR :
13:02:31.673 [ERROR] [system.err] An exception has occurred in the compiler (1.8.0_162). Please file a bug against the Java compiler via the Java bug reporting page (http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com) for duplicates. Include your program and the following diagnostic in your report. Thank you.
13:02:31.673 [ERROR] [system.err] java.lang.NullPointerException
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.dummyMethodType(Attr.java:4731)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.initTypeIfNeeded(Attr.java:4717)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitMethodDef(Attr.java:4778)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.674 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:57)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitClassDef(TreeScanner.java:80)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitClassDef(Attr.java:4773)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:693)
13:02:31.675 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitNewClass(TreeScanner.java:208)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitNewClass(Attr.java:4804)
13:02:31.676 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1516)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitLambda(TreeScanner.java:221)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitLambda(Attr.java:4836)
13:02:31.677 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1624)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitReturn(TreeScanner.java:185)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1384)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.678 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:57)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitBlock(TreeScanner.java:105)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.visitLambda(TreeScanner.java:221)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.visitLambda(Attr.java:4836)
13:02:31.679 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1624)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$PostAttrAnalyzer.scan(Attr.java:4749)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr$7.scan(Attr.java:2450)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.preFlow(Attr.java:2452)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.canLambdaBodyCompleteNormally(DeferredAttr.java:718)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.visitLambda(DeferredAttr.java:664)
13:02:31.680 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1624)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.complete(DeferredAttr.java:617)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:246)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.access$100(DeferredAttr.java:132)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode.process(DeferredAttr.java:564)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrContext.complete(DeferredAttr.java:480)
13:02:31.681 [ERROR] [system.err] at com.sun.tools.javac.comp.Infer.instantiateMethod(Infer.java:182)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:567)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1446)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1633)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1704)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1677)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2436)
13:02:31.682 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3097)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3348)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2433)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2427)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3396)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3278)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
13:02:31.683 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1825)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$2.complete(DeferredAttr.java:285)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:246)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:233)
13:02:31.684 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.recover(DeferredAttr.java:883)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.typeOf(DeferredAttr.java:872)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$ResolveDeferredRecoveryMap.typeOf(Resolve.java:2310)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredTypeMap.apply(DeferredAttr.java:839)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.apply(DeferredAttr.java:862)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.code.Type.map(Type.java:221)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkMethod(Attr.java:3873)
13:02:31.685 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkIdInternal(Attr.java:3616)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3523)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3502)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3489)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3371)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.686 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1825)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitReturn(Attr.java:1686)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1384)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:661)
13:02:31.687 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.canLambdaBodyCompleteNormally(DeferredAttr.java:716)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.visitLambda(DeferredAttr.java:664)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1624)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode$StructuralStuckChecker.complete(DeferredAttr.java:617)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:246)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.access$100(DeferredAttr.java:132)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrNode.process(DeferredAttr.java:564)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredAttrContext.complete(DeferredAttr.java:480)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.Infer.instantiateMethod(Infer.java:182)
13:02:31.688 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:567)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1446)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1633)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1704)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1677)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2436)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3097)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3348)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2433)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2427)
13:02:31.689 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3396)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3278)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1825)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr.attribSpeculative(DeferredAttr.java:387)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$2.complete(DeferredAttr.java:280)
13:02:31.690 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:246)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:233)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$MethodResultInfo.check(Resolve.java:1008)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$4.checkArg(Resolve.java:835)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$AbstractMethodCheck.argumentsAcceptable(Resolve.java:735)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$4.argumentsAcceptable(Resolve.java:844)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:579)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.selectBest(Resolve.java:1446)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethodInScope(Resolve.java:1633)
13:02:31.691 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1704)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.findMethod(Resolve.java:1677)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$9.doLookup(Resolve.java:2436)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve$BasicLookupHelper.lookup(Resolve.java:3097)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.lookupMethod(Resolve.java:3348)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2433)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Resolve.resolveQualifiedMethod(Resolve.java:2427)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.selectSym(Attr.java:3396)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3278)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1897)
13:02:31.692 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1825)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1465)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitReturn(Attr.java:1686)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1384)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:661)
13:02:31.693 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1124)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:909)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1013)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:778)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4364)
13:02:31.694 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4272)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4201)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.visitClassDef(Attr.java:870)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:693)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:576)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:645)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4364)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4272)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4201)
13:02:31.695 [ERROR] [system.err] at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4176)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1248)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:901)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:860)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.main.Main.compile(Main.java:523)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
13:02:31.696 [ERROR] [system.err] at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
13:02:31.696 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:48)
13:02:31.696 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.JdkJavaCompiler.execute(JdkJavaCompiler.java:35)
13:02:31.696 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:98)
13:02:31.696 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:51)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:37)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:35)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.internal.tasks.compile.CleaningJavaCompilerSupport.execute(CleaningJavaCompilerSupport.java:25)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.tasks.compile.JavaCompile.performCompilation(JavaCompile.java:207)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:192)
13:02:31.697 [ERROR] [system.err] at org.gradle.api.tasks.compile.JavaCompile.compile(JavaCompile.java:124)
13:02:31.697 [ERROR] [system.err] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
13:02:31.697 [ERROR] [system.err] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
13:02:31.697 [ERROR] [system.err] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
13:02:31.698 [ERROR] [system.err] at java.lang.reflect.Method.invoke(Method.java:498)
13:02:31.698 [ERROR] [system.err] at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
13:02:31.698 [ERROR] [system.err] at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:50)
13:02:31.698 [ERROR] [system.err] at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
13:02:31.698 [ERROR] [system.err] at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
13:02:31.698 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:124)
13:02:31.698 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
13:02:31.699 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
13:02:31.699 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
13:02:31.699 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:113)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:95)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:73)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:59)
13:02:31.699 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:59)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:101)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.FinalizeInputFilePropertiesTaskExecuter.execute(FinalizeInputFilePropertiesTaskExecuter.java:44)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:88)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:62)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
13:02:31.700 [ERROR] [system.err] at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
13:02:31.701 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
13:02:31.701 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
13:02:31.701 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
13:02:31.701 [ERROR] [system.err] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
13:02:31.701 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
13:02:31.702 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
13:02:31.702 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:623)
13:02:31.702 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:578)
13:02:31.702 [ERROR] [system.err] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.run(DefaultTaskPlanExecutor.java:98)
13:02:31.702 [ERROR] [system.err] at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
13:02:31.702 [ERROR] [system.err] at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:46)
13:02:31.702 [ERROR] [system.err] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
13:02:31.702 [ERROR] [system.err] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
13:02:31.703 [ERROR] [system.err] at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:55)
13:02:31.703 [ERROR] [system.err] at java.lang.Thread.run(Thread.java:748)


REPRODUCIBILITY :
This bug can be reproduced always.