title: :app:transformClassesWithDexForDebug while compiling Firebase
body: <p>In my application, I want to use <a href="https://www.firebase.com/" rel="nofollow">Firebase</a> as back-end. I have given support of Facebook and Google login as well. Before adding Firebase in dependency, my project compiled successfully but after adding Firebase, I am getting this error:</p>
  
  <pre><code>Information:Gradle tasks [:app:assembleDebug]
  :app:preBuild UP-TO-DATE
  :app:preDebugBuild UP-TO-DATE
  :app:checkDebugManifest
  :app:preReleaseBuild UP-TO-DATE
  :app:prepareComAndroidSupportAppcompatV72311Library UP-TO-DATE
  :app:prepareComAndroidSupportDesign2311Library UP-TO-DATE
  :app:prepareComAndroidSupportMediarouterV72300Library UP-TO-DATE
  :app:prepareComAndroidSupportRecyclerviewV72311Library UP-TO-DATE
  :app:prepareComAndroidSupportSupportV42311Library UP-TO-DATE
  :app:prepareComFacebookAndroidFacebookAndroidSdk460Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServices840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesAds840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesAnalytics840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesAppindexing840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesAppinvite840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesAppstate840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesAuth840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesBase840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesBasement840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesCast840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesDrive840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesFitness840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesGames840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesGcm840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesIdentity840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesLocation840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesMaps840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesMeasurement840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesNearby840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesPanorama840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesPlus840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesSafetynet840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesVision840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesWallet840Library UP-TO-DATE
  :app:prepareComGoogleAndroidGmsPlayServicesWearable840Library UP-TO-DATE
  :app:prepareDebugDependencies
  :app:compileDebugAidl UP-TO-DATE
  :app:compileDebugRenderscript UP-TO-DATE
  :app:generateDebugBuildConfig UP-TO-DATE
  :app:generateDebugAssets UP-TO-DATE
  :app:mergeDebugAssets UP-TO-DATE
  :app:generateDebugResValues UP-TO-DATE
  :app:processDebugGoogleServices
  :app:generateDebugResources
  :app:mergeDebugResources UP-TO-DATE
  :app:processDebugManifest
  :app:processDebugResources
  :app:generateDebugSources
  :app:compileDebugJavaWithJavac
  None of the classes needs to be compiled! Analysis took 0.029 secs. 
  :app:compileDebugNdk UP-TO-DATE
  :app:compileDebugSources
  :app:buildInfoDebugLoader
  :app:transformClassesWithExtractJarsForDebug UP-TO-DATE
  :app:transformClassesWithInstantRunVerifierForDebug UP-TO-DATE
  :app:transformClassesWithInstantRunForDebug
  :app:incrementalDebugTasks
  :app:prePackageMarkerForDebug
  :app:coldswapKickerDebug
  :app:fastDeployDebugExtractor UP-TO-DATE
  :app:generateDebugInstantRunAppInfo UP-TO-DATE
  :app:transformClassesWithInstantRunSlicerForDebug
  :app:transformClassesWithDexForDebug FAILED
  Error:Execution failed for task ':app:transformClassesWithDexForDebug'.
  &gt; com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_25\bin\java.exe'' finished with non-zero exit value 3
  Information:BUILD FAILED
  Information:Total time: 2 mins 57.799 secs
  Information:1 error
  Information:0 warnings
  Information:See complete output in console
  </code></pre>
  
  <p>My <code>build.gradle</code> looks like this:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 23
      buildToolsVersion "23.0.2"
  
      defaultConfig {
          applicationId "com..."
          minSdkVersion 15
          targetSdkVersion 23
          versionCode 1
          versionName "1.0"
          // Enabling multidex support.
          multiDexEnabled true
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      testCompile 'junit:junit:4.12'
      compile 'com.android.support:appcompat-v7:23.1.1'
      compile 'com.android.support:design:23.1.1'
      compile 'com.google.android.gms:play-services:8.4.0'
      compile 'com.firebase:firebase-client-android:2.5.0+'
      compile 'com.facebook.android:facebook-android-sdk:4.6.0'
      compile 'com.android.support:multidex:1.0.0'
  }
  
  apply plugin: 'com.google.gms.google-services'
  </code></pre>
  
  <p>My project <code>build.gradle</code> :</p>
  
  <pre><code>// Top-level build file where you can add configuration options common to all sub-projects/modules.
  
  buildscript {
      repositories {
          jcenter()
      }
      dependencies {
          classpath 'com.android.tools.build:gradle:2.0.0-alpha9'
          classpath 'com.google.gms:google-services:2.0.0-alpha9'
  
          // NOTE: Do not place your application dependencies here; they belong
          // in the individual module build.gradle files
      }
  }
  
  allprojects {
      repositories {
          jcenter()
      }
  }
  
  task clean(type: Delete) {
      delete rootProject.buildDir
  }
  </code></pre>
  
  <p>More Log:</p>
  
  <pre><code>* Exception is:
  org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformClassesWithDexForDebug'.
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
          at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
          at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:64)
          at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
          at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
          at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
          at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
          at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
          at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:203)
          at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:185)
          at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:66)
          at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)
          at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:25)
          at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:110)
          at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
          at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
          at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
          at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
          at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
          at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
          at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
          at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java:154)
          at org.gradle.internal.Factories$1.create(Factories.java:22)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:52)
          at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:151)
          at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
          at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:99)
          at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:93)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:90)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:62)
          at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:93)
          at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:82)
          at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:94)
          at org.gradle.tooling.internal.provider.ExecuteBuildActionRunner.run(ExecuteBuildActionRunner.java:28)
          at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
          at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:43)
          at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:28)
          at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:78)
          at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:48)
          at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:51)
          at org.gradle.launcher.exec.DaemonUsageSuggestingBuildActionExecuter.execute(DaemonUsageSuggestingBuildActionExecuter.java:28)
          at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:43)
          at org.gradle.internal.Actions$RunnableActionAdapter.execute(Actions.java:170)
          at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:237)
          at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:210)
          at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:35)
          at org.gradle.launcher.cli.JavaRuntimeValidationAction.execute(JavaRuntimeValidationAction.java:24)
          at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:206)
          at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:169)
          at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
          at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
          at org.gradle.launcher.Main.doAction(Main.java:33)
          at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
          at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:54)
          at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:35)
          at org.gradle.launcher.GradleMain.main(GradleMain.java:23)
          at org.gradle.wrapper.BootstrapMainStarter.start(BootstrapMainStarter.java:30)
          at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:129)
          at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
  Caused by: java.lang.RuntimeException: com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_25\bin\java.exe'' finished with non-zero exit value 2
          at com.android.builder.profile.Recorder$Block.handleException(Recorder.java:54)
          at com.android.builder.profile.ThreadRecorder$1.record(ThreadRecorder.java:57)
          at com.android.builder.profile.ThreadRecorder$1.record(ThreadRecorder.java:47)
          at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:173)
          at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:75)
          at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.doExecute(AnnotationProcessingTaskFactory.java:244)
          at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:220)
          at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$IncrementalTaskAction.execute(AnnotationProcessingTaskFactory.java:231)
          at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:209)
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
          ... 60 more
  Caused by: com.android.build.api.transform.TransformException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_25\bin\java.exe'' finished with non-zero exit value 2
          at com.android.build.gradle.internal.transforms.DexTransform.transform(DexTransform.java:424)
          at com.android.build.gradle.internal.pipeline.TransformTask$3.call(TransformTask.java:178)
          at com.android.build.gradle.internal.pipeline.TransformTask$3.call(TransformTask.java:174)
          at com.android.builder.profile.ThreadRecorder$1.record(ThreadRecorder.java:55)
          ... 69 more
  Caused by: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_25\bin\java.exe'' finished with non-zero exit value 2
          at com.android.build.gradle.internal.process.GradleProcessResult.assertNormalExitValue(GradleProcessResult.java:43)
          at com.android.builder.core.AndroidBuilder.runDexer(AndroidBuilder.java:1386)
          at com.android.builder.core.AndroidBuilder.convertByteCode(AndroidBuilder.java:1356)
          at com.android.build.gradle.internal.transforms.DexTransform.transform(DexTransform.java:408)
          ... 72 more
  Caused by: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_25\bin\java.exe'' finished with non-zero exit value 2
          at org.gradle.process.internal.DefaultExecHandle$ExecResultImpl.assertNormalExitValue(DefaultExecHandle.java:367)
          at com.android.build.gradle.internal.process.GradleProcessResult.assertNormalExitValue(GradleProcessResult.java:41)
          ... 75 more
  
  
  BUILD FAILED
  
  Total time: 2 mins 13.588 secs
  PREDEX CACHE HITS:   0
  PREDEX CACHE MISSES: 42
  Stopped 0 compiler daemon(s).
  </code></pre>