Hi All,

If I run "gradle test" it sometimes (but not always) fails with:

FAILURE: Build failed with an exception.
* What went wrong:
 Execution failed for task ':base:compileTestJava'.
> java.lang.ClassFormatError: Invalid Constant Pool entry Type 18
The whole exception stacktrace is at the end of the email.

Based on the stacktrace and after some googling I found that this might be caused by old ant version which didn't support invokeDynamic. This is fixed in ant 1.9 but the ant which is built in gradle is older.

Has anybody else run into this?

I've tried to add
ant.properties["build.compiler"] = "javac1.7"
into build.gradle and this seems to help so far but I am not sure if it doesn't break anything else (or if it helps for real since I didn't find the specific conditions in which the build fails with this error).

Thanks,
Eva


15:31:12.853 [ERROR] [org.gradle.BuildExceptionReporter]
15:31:12.859 [ERROR] [org.gradle.BuildExceptionReporter] FAILURE: Build failed with an exception.
15:31:12.861 [ERROR] [org.gradle.BuildExceptionReporter]
15:31:12.862 [ERROR] [org.gradle.BuildExceptionReporter] * What went wrong:
15:31:12.862 [ERROR] [org.gradle.BuildExceptionReporter] Execution failed for task ':base:compileTestJava'. 15:31:12.863 [ERROR] [org.gradle.BuildExceptionReporter] > java.lang.ClassFormatError: Invalid Constant Pool entry Type 18
15:31:12.884 [ERROR] [org.gradle.BuildExceptionReporter]
15:31:12.889 [ERROR] [org.gradle.BuildExceptionReporter] * Exception is:
15:31:12.891 [ERROR] [org.gradle.BuildExceptionReporter] org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':base:compileTestJava'. 15:31:12.892 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69) 15:31:12.893 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46) 15:31:12.893 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35) 15:31:12.894 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.changedetection.state.CacheLockReleasingTaskExecuter$1.run(CacheLockReleasingTaskExecuter.java:35) 15:31:12.894 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.internal.Factories$1.create(Factories.java:22) 15:31:12.895 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:179) 15:31:12.895 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:232) 15:31:12.895 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.cache.internal.DefaultPersistentDirectoryStore.longRunningOperation(DefaultPersistentDirectoryStore.java:142) 15:31:12.896 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.longRunningOperation(DefaultTaskArtifactStateCacheAccess.java:83) 15:31:12.896 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.changedetection.state.CacheLockReleasingTaskExecuter.execute(CacheLockReleasingTaskExecuter.java:33) 15:31:12.897 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:58) 15:31:12.897 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ContextualisingTaskExecuter.execute(ContextualisingTaskExecuter.java:34) 15:31:12.897 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.changedetection.state.CacheLockAcquiringTaskExecuter$1.run(CacheLockAcquiringTaskExecuter.java:39) 15:31:12.898 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.internal.Factories$1.create(Factories.java:22) 15:31:12.898 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:124) 15:31:12.899 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:112) 15:31:12.899 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:134) 15:31:12.899 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java:79) 15:31:12.900 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.changedetection.state.CacheLockAcquiringTaskExecuter.execute(CacheLockAcquiringTaskExecuter.java:37) 15:31:12.900 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:57) 15:31:12.900 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:41) 15:31:12.901 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:51) 15:31:12.901 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:52) 15:31:12.902 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:42) 15:31:12.902 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:282) 15:31:12.902 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.executeTask(DefaultTaskPlanExecutor.java:48) 15:31:12.903 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.processTask(DefaultTaskPlanExecutor.java:34) 15:31:12.903 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:27) 15:31:12.903 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:89) 15:31:12.904 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29) 15:31:12.904 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61) 15:31:12.904 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23) 15:31:12.905 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67) 15:31:12.905 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.changedetection.state.TaskCacheLockHandlingBuildExecuter$1.run(TaskCacheLockHandlingBuildExecuter.java:31) 15:31:12.905 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.internal.Factories$1.create(Factories.java:22) 15:31:12.906 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:124) 15:31:12.906 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:112) 15:31:12.908 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:134) 15:31:12.909 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java:79) 15:31:12.910 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.changedetection.state.TaskCacheLockHandlingBuildExecuter.execute(TaskCacheLockHandlingBuildExecuter.java:29) 15:31:12.910 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61) 15:31:12.910 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23) 15:31:12.911 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67) 15:31:12.911 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32) 15:31:12.911 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61) 15:31:12.912 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:54) 15:31:12.912 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:166) 15:31:12.913 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:113) 15:31:12.913 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:81) 15:31:12.913 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:64) 15:31:12.914 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33) 15:31:12.914 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24) 15:31:12.914 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:35) 15:31:12.915 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26) 15:31:12.915 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:50) 15:31:12.915 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.Actions$RunnableActionAdapter.execute(Actions.java:171) 15:31:12.915 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:201) 15:31:12.916 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:174) 15:31:12.916 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:170) 15:31:12.917 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:139) 15:31:12.917 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33) 15:31:12.917 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22) 15:31:12.918 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.Main.doAction(Main.java:48) 15:31:12.918 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45) 15:31:12.919 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.Main.main(Main.java:39) 15:31:12.919 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:50) 15:31:12.920 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:32) 15:31:12.920 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.launcher.GradleMain.main(GradleMain.java:26) 15:31:12.920 [ERROR] [org.gradle.BuildExceptionReporter] Caused by: : java.lang.ClassFormatError: Invalid Constant Pool entry Type 18 15:31:12.923 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:116) 15:31:12.923 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.ant.BasicAntBuilder.nodeCompleted(BasicAntBuilder.java:71) 15:31:12.923 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.ant.BasicAntBuilder.doInvokeMethod(BasicAntBuilder.java:86) 15:31:12.924 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.DefaultAntBuilder.super$3$invokeMethod(DefaultAntBuilder.groovy) 15:31:12.924 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.DefaultAntBuilder.invokeMethod(DefaultAntBuilder.groovy:37) 15:31:12.924 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.AntDependsStaleClassCleaner.execute(AntDependsStaleClassCleaner.groovy:44) 15:31:12.925 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.IncrementalJavaCompilerSupport.execute(IncrementalJavaCompilerSupport.java:30) 15:31:12.925 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.IncrementalJavaCompilerSupport.execute(IncrementalJavaCompilerSupport.java:24) 15:31:12.925 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.tasks.compile.Compile.compile(Compile.java:68) 15:31:12.926 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.BeanDynamicObject$MetaClassAdapter.invokeMethod(BeanDynamicObject.java:216) 15:31:12.926 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.BeanDynamicObject.invokeMethod(BeanDynamicObject.java:122) 15:31:12.926 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.CompositeDynamicObject.invokeMethod(CompositeDynamicObject.java:147) 15:31:12.927 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.tasks.compile.JavaCompile_Decorated.invokeMethod(Unknown Source) 15:31:12.927 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.util.ReflectionUtil.invoke(ReflectionUtil.groovy:23) 15:31:12.927 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:217) 15:31:12.928 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:210) 15:31:12.928 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:199) 15:31:12.929 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:526) 15:31:12.930 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:509) 15:31:12.930 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80) 15:31:12.930 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
15:31:12.931 [ERROR] [org.gradle.BuildExceptionReporter]        ... 67 more
15:31:12.931 [ERROR] [org.gradle.BuildExceptionReporter] Caused by: java.lang.ClassFormatError: Invalid Constant Pool entry Type 18 15:31:12.932 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.taskdefs.optional.depend.constantpool.ConstantPoolEntry.readEntry(ConstantPoolEntry.java:159) 15:31:12.932 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.taskdefs.optional.depend.constantpool.ConstantPool.read(ConstantPool.java:67) 15:31:12.933 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.taskdefs.optional.depend.ClassFile.read(ClassFile.java:72) 15:31:12.933 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.taskdefs.optional.depend.AntAnalyzer.determineDependencies(AntAnalyzer.java:92) 15:31:12.933 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.util.depend.AbstractAnalyzer.getClassDependencies(AbstractAnalyzer.java:100) 15:31:12.934 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.taskdefs.optional.depend.Depend.determineDependencies(Depend.java:346) 15:31:12.934 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.taskdefs.optional.depend.Depend.execute(Depend.java:718) 15:31:12.935 [ERROR] [org.gradle.BuildExceptionReporter] at org.gradle.api.internal.tasks.compile.AntDepend.execute(AntDepend.java:35) 15:31:12.935 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291) 15:31:12.935 [ERROR] [org.gradle.BuildExceptionReporter] at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
15:31:12.935 [ERROR] [org.gradle.BuildExceptionReporter]        ... 87 more
15:31:12.936 [ERROR] [org.gradle.BuildExceptionReporter]

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