NullPointerException optimizing Android APK
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#651 NullPointerException optimizing Android APK
Hello, I wonder if this is a proguard bug or some Android tool related bug (gradle?). I had a project building release APK files in March of this year. At some point Android Studio suggested project updates and I applied them. After those changes, proguard started to crash.
Ignoring unused library classes... Original number of library classes: 9191 Final number of library classes: 1404 Printing kept classes, fields, and methods... Shrinking... Printing usage to [/Users/gradha/project/questionity/temp_proguard/hi!You/app/build/outputs/mapping/qtestHard/release/usage.txt]... Removing unused program classes and class elements... Original number of program classes: 7157 Final number of program classes: 4611 Optimizing... Warning: Exception while processing task java.io.IOException: java.lang.NullPointerException :app:transformClassesAndResourcesWithProguardForQtestHardRelease FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:transformClassesAndResourcesWithProguardForQtestHardRelease'. > Job failed, see logs for details * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
The only changes made to the project were:
diff --git a/hi!You/build.gradle b/hi!You/build.gradle index f1119df..5bd32da 100644 --- a/hi!You/build.gradle +++ b/hi!You/build.gradle @@ -5,7 +5,7 @@ buildscript { jcenter() } dependencies { - classpath 'com.android.tools.build:gradle:2.2.3' + classpath 'com.android.tools.build:gradle:2.3.1' classpath 'com.google.gms:google-services:3.0.0' } } diff --git a/hi!You/gradle/wrapper/gradle-wrapper.properties b/hi!You/gradle/wrapper/gradle-wrapper.properties index 5f935a6..79f0962 100644 --- a/hi!You/gradle/wrapper/gradle-wrapper.properties +++ b/hi!You/gradle/wrapper/gradle-wrapper.properties @@ -1,6 +1,6 @@ -#Wed Aug 17 09:54:18 CEST 2016 +#Tue Apr 11 20:39:46 CEST 2017 distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists -distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip +distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip diff --git a/hi!You/rangeseekbar/build.gradle b/hi!You/rangeseekbar/build.gradle index 6fceb33..21c8b3b 100644 --- a/hi!You/rangeseekbar/build.gradle +++ b/hi!You/rangeseekbar/build.gradle @@ -5,7 +5,7 @@ buildscript { } dependencies { - classpath 'com.android.tools.build:gradle:2.2.3' + classpath 'com.android.tools.build:gradle:2.3.1' } }
When trying to run with the suggested debug options I don't see any more useful information in the logs, but here they are:
10:40:09.390 [QUIET] [system.out] Optimizing... 10:40:10.646 [DEBUG] [org.gradle.launcher.daemon.server.Daemon] DaemonExpirationPeriodicCheck running 10:40:10.646 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire shared lock on daemon addresses registry. 10:40:10.647 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired. 10:40:10.647 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry. 10:40:10.647 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Waiting to acquire shared lock on daemon addresses registry. 10:40:10.647 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Lock acquired. 10:40:10.647 [DEBUG] [org.gradle.cache.internal.DefaultFileLockManager] Releasing lock on daemon addresses registry. 10:40:15.153 [QUIET] [system.out] Warning: Exception while processing task java.io.IOException: java.lang.NullPointerException 10:40:15.153 [DEBUG] [org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter] Removed task artifact state for {} from context. 10:40:15.153 [DEBUG] [org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter] Finished executing task ':app:transformClassesAndResourcesWithProguardForQtestHardRelease' 10:40:15.153 [LIFECYCLE] [class org.gradle.internal.buildevents.TaskExecutionLogger] :app:transformClassesAndResourcesWithProguardForQtestHardRelease FAILED 10:40:15.153 [INFO] [org.gradle.execution.taskgraph.AbstractTaskPlanExecutor] :app:transformClassesAndResourcesWithProguardForQtestHardRelease (Thread[Daemon worker Thread 3,5,main]) completed. Took 9.925 secs. 10:40:15.153 [DEBUG] [org.gradle.internal.operations.DefaultBuildOperationWorkerRegistry] Worker root.264 completed (0 in use) 10:40:15.153 [DEBUG] [org.gradle.execution.taskgraph.AbstractTaskPlanExecutor] Task worker [Thread[Daemon worker Thread 3,5,main]] finished, busy: 12.171 secs, idle: 0.053 secs 10:40:15.154 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 10:40:15.154 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] FAILURE: Build failed with an exception. 10:40:15.154 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 10:40:15.154 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * What went wrong: 10:40:15.154 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Execution failed for task ':app:transformClassesAndResourcesWithProguardForQtestHardRelease'. 10:40:15.154 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] > Job failed, see logs for details 10:40:15.154 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 10:40:15.154 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] * Exception is: 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformClassesAndResourcesWithProguardForQtestHardRelease'. 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:84) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:55) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:88) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:46) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:51) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.execute(DefaultTaskGraphExecuter.java:236) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.execute(DefaultTaskGraphExecuter.java:228) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.Transformers$4.transform(Transformers.java:169) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:106) 10:40:15.155 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:61) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:228) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:215) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:77) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:58) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:32) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:113) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher$3.execute(DefaultGradleLauncher.java:196) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher$3.execute(DefaultGradleLauncher.java:193) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.Transformers$4.transform(Transformers.java:169) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:106) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:56) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:193) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:119) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:102) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.exec.GradleBuildController.run(GradleBuildController.java:71) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:41) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26) 10:40:15.156 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:75) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:49) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:44) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.tooling.internal.provider.ServicesSetupBuildActionExecuter.execute(ServicesSetupBuildActionExecuter.java:29) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:67) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:47) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.util.Swapper.swap(Swapper.java:38) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.LogAndCheckHealth.execute(LogAndCheckHealth.java:55) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:297) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40) 10:40:15.157 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Caused by: java.lang.RuntimeException: Job failed, see logs for details 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.internal.transforms.ProGuardTransform.transform(ProGuardTransform.java:196) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:185) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.internal.pipeline.TransformTask$2.call(TransformTask.java:181) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:102) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:176) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$IncrementalTaskAction.doExecute(DefaultTaskClassInfoStore.java:163) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:134) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.project.taskfactory.DefaultTaskClassInfoStore$StandardTaskAction.execute(DefaultTaskClassInfoStore.java:123) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:95) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:76) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] ... 70 more 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Caused by: java.io.IOException: java.lang.NullPointerException 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.internal.transforms.ProGuardTransform.doMinification(ProGuardTransform.java:283) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.internal.transforms.ProGuardTransform.access$000(ProGuardTransform.java:63) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.internal.transforms.ProGuardTransform$1.run(ProGuardTransform.java:173) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.builder.tasks.Job.runTask(Job.java:48) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.tasks.SimpleWorkQueue$EmptyThreadContext.runTask(SimpleWorkQueue.java:41) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.builder.tasks.WorkQueue.run(WorkQueue.java:225) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] Caused by: java.lang.NullPointerException 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.optimize.info.NonEmptyStackReturnMarker.setReturnsWithNonEmptyStack(NonEmptyStackReturnMarker.java:102) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.optimize.info.NonEmptyStackReturnMarker.markReturnWithNonEmptyStack(NonEmptyStackReturnMarker.java:95) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.optimize.info.NonEmptyStackReturnMarker.visitSimpleInstruction(NonEmptyStackReturnMarker.java:72) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.instruction.visitor.MultiInstructionVisitor.visitSimpleInstruction(MultiInstructionVisitor.java:88) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.instruction.SimpleInstruction.accept(SimpleInstruction.java:218) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.attribute.CodeAttribute.instructionsAccept(CodeAttribute.java:138) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.attribute.CodeAttribute.instructionsAccept(CodeAttribute.java:110) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.instruction.visitor.AllInstructionVisitor.visitCodeAttribute(AllInstructionVisitor.java:54) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.attribute.visitor.MultiAttributeVisitor.visitCodeAttribute(MultiAttributeVisitor.java:245) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.attribute.CodeAttribute.accept(CodeAttribute.java:101) 10:40:15.158 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.ProgramMethod.attributesAccept(ProgramMethod.java:81) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.attribute.visitor.AllAttributeVisitor.visitProgramMember(AllAttributeVisitor.java:95) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.util.SimplifiedVisitor.visitProgramMethod(SimplifiedVisitor.java:92) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.visitor.MultiMemberVisitor.visitProgramMethod(MultiMemberVisitor.java:92) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.ProgramMethod.accept(ProgramMethod.java:73) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.ProgramClass.methodsAccept(ProgramClass.java:516) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.visitor.AllMethodVisitor.visitProgramClass(AllMethodVisitor.java:47) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.visitor.MultiClassVisitor.visitProgramClass(MultiClassVisitor.java:85) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.ProgramClass.accept(ProgramClass.java:358) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.classfile.ClassPool.classesAccept(ClassPool.java:124) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.optimize.Optimizer.execute(Optimizer.java:649) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.ProGuard.optimize(ProGuard.java:328) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at proguard.ProGuard.execute(ProGuard.java:127) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.internal.transforms.BaseProguardAction.runProguard(BaseProguardAction.java:54) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] at com.android.build.gradle.internal.transforms.ProGuardTransform.doMinification(ProGuardTransform.java:254) 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] ... 5 more 10:40:15.159 [ERROR] [org.gradle.internal.buildevents.BuildExceptionReporter] 10:40:15.159 [LIFECYCLE] [org.gradle.internal.buildevents.BuildResultLogger] 10:40:15.159 [LIFECYCLE] [org.gradle.internal.buildevents.BuildResultLogger] BUILD FAILED
The current stable Android tools update the plugins to version 2.3.3 but that doesn't make any difference. Actually I don't even know how I can invoke proguard manually or check its version. Any guidance on that may help as well.
This is a duplicate of bug #630, which has been fixed in ProGuard 5.3.3.
ProGuard prints out its version number in the first line of its console log.
All versions of ProGuard are backward compatible, so you can force the Android plugin to use version 5.3.3.