title: Gradle build not working: Execution failed for task ':MyApp:compileDebug'
body: <p>I'm trying to migrate a project to Gradle, but I get an exception raised everytime I run the command </p>
  
  <pre><code>gradle build --stacktrace
  </code></pre>
  
  <p>I'm using Gradle 1.6. Here's the stack trace for the error:</p>
  
  <pre><code>:MyApp:compileDebug FAILED
  
  FAILURE: Build failed with an exception.
  
  * What went wrong:
  Execution failed for task ':MyApp:compileDebug'.
  &gt; Compilation failed; see the compiler error output for details.
  
  * Try:
  Run with --info or --debug option to get more log output.
  
  * Exception is:
  org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':MyApp:compileDebug'.
      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.changedetection.state.CacheLockReleasingTaskExecuter$1.run(CacheLockReleasingTaskExecuter.java:35)
      at org.gradle.internal.Factories$1.create(Factories.java:22)
      at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:179)
      at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:232)
      at org.gradle.cache.internal.DefaultPersistentDirectoryStore.longRunningOperation(DefaultPersistentDirectoryStore.java:142)
      at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.longRunningOperation(DefaultTaskArtifactStateCacheAccess.java:83)
      at org.gradle.api.internal.changedetection.state.CacheLockReleasingTaskExecuter.execute(CacheLockReleasingTaskExecuter.java:33)
      at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:58)
      at org.gradle.api.internal.tasks.execution.ContextualisingTaskExecuter.execute(ContextualisingTaskExecuter.java:34)
      at org.gradle.api.internal.changedetection.state.CacheLockAcquiringTaskExecuter$1.run(CacheLockAcquiringTaskExecuter.java:39)
      at org.gradle.internal.Factories$1.create(Factories.java:22)
      at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:124)
      at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:112)
      at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:134)
      at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java:79)
      at org.gradle.api.internal.changedetection.state.CacheLockAcquiringTaskExecuter.execute(CacheLockAcquiringTaskExecuter.java:37)
      at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:57)
      at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:41)
      at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:51)
      at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:52)
      at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:42)
      at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:282)
      at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.executeTask(DefaultTaskPlanExecutor.java:48)
      at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.processTask(DefaultTaskPlanExecutor.java:34)
      at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:27)
      at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:89)
      at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)
      at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
      at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
      at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67)
      at org.gradle.api.internal.changedetection.state.TaskCacheLockHandlingBuildExecuter$1.run(TaskCacheLockHandlingBuildExecuter.java:31)
      at org.gradle.internal.Factories$1.create(Factories.java:22)
      at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:124)
      at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:112)
      at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:134)
      at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java:79)
      at org.gradle.api.internal.changedetection.state.TaskCacheLockHandlingBuildExecuter.execute(TaskCacheLockHandlingBuildExecuter.java:29)
      at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
      at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
      at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67)
      at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
      at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
      at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:54)
      at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:166)
      at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:113)
      at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:81)
      at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:64)
      at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33)
      at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24)
      at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:35)
      at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
      at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:50)
      at org.gradle.api.internal.Actions$RunnableActionAdapter.execute(Actions.java:171)
      at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:201)
      at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:174)
      at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:170)
      at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:139)
      at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
      at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
      at org.gradle.launcher.Main.doAction(Main.java:48)
      at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
      at org.gradle.launcher.Main.main(Main.java:39)
      at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:50)
      at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:32)
      at org.gradle.launcher.GradleMain.main(GradleMain.java:26)
  Caused by: org.gradle.api.internal.tasks.compile.CompilationFailedException: Compilation failed; see the compiler error output for details.
      at org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler.execute(Jdk6JavaCompiler.java:42)
      at org.gradle.api.internal.tasks.compile.jdk6.Jdk6JavaCompiler.execute(Jdk6JavaCompiler.java:33)
      at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.delegateAndHandleErrors(NormalizingJavaCompiler.java:95)
      at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:48)
      at org.gradle.api.internal.tasks.compile.NormalizingJavaCompiler.execute(NormalizingJavaCompiler.java:34)
      at org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler.execute(DelegatingJavaCompiler.java:29)
      at org.gradle.api.internal.tasks.compile.DelegatingJavaCompiler.execute(DelegatingJavaCompiler.java:20)
      at org.gradle.api.internal.tasks.compile.IncrementalJavaCompilerSupport.execute(IncrementalJavaCompilerSupport.java:33)
      at org.gradle.api.internal.tasks.compile.IncrementalJavaCompilerSupport.execute(IncrementalJavaCompilerSupport.java:24)
      at org.gradle.api.tasks.compile.Compile.compile(Compile.java:68)
      at org.gradle.api.internal.BeanDynamicObject$MetaClassAdapter.invokeMethod(BeanDynamicObject.java:216)
      at org.gradle.api.internal.BeanDynamicObject.invokeMethod(BeanDynamicObject.java:122)
      at org.gradle.api.internal.CompositeDynamicObject.invokeMethod(CompositeDynamicObject.java:147)
      at org.gradle.api.tasks.compile.JavaCompile_Decorated.invokeMethod(Unknown Source)
      at org.gradle.util.ReflectionUtil.invoke(ReflectionUtil.groovy:23)
      at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:217)
      at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:210)
      at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:199)
      at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:526)
      at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:509)
      at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
      at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
      ... 67 more
  </code></pre>
  
  <p>I have the following structure defined in settings.gradle:</p>
  
  <pre><code>include ':MyApp'
  include ':Libraries:LibProject1'
  include ':Libraries:LibProject2'
  include ':Libraries:LibProject3'
  include ':Libraries:LibProject4'
  </code></pre>
  
  <p>And my project's directories are like this:</p>
  
  <pre><code>- My Repository
    -- settings.gradle
    - My App
      -- build.gradle
    - Libraries
      - LibProject1
        -- build.gradle
      - LibProject2
        -- build.gradle
      - LibProject3
        -- build.gradle
      - LibProject4
        -- build.gradle
  </code></pre>
  
  <p>My App > build.gradle file is like this:</p>
  
  <pre><code>buildscript {
      repositories {
          mavenCentral()
      }
      dependencies {
          classpath 'com.android.tools.build:gradle:0.5.+'
      }
  }
  apply plugin: 'android'
  
  dependencies {
      compile fileTree(dir: 'libs/main', include: '*.jar')
      compile project(':Libraries:LibProject1')
      compile project(':Libraries:LibProject2')
      compile project(':Libraries:LibProject3')
      compile project(':Libraries:LibProject4')
  }
  
  android {
      compileSdkVersion "Google Inc.:Google APIs:19"
      buildToolsVersion "19.0.1"
  
      sourceSets {
          main {
              manifest.srcFile 'AndroidManifest.xml'
              java.srcDirs = ['src/main/java', 'src-gen/main/java', 'generated']
              resources.srcDirs = ['src']
              aidl.srcDirs = ['src']
              renderscript.srcDirs = ['src']
              res.srcDirs = ['res']
              assets.srcDirs = ['assets']
          }
      }
  }
  </code></pre>
  
  <p>And all LibProject# > build.gradle files are like this:</p>
  
  <pre><code>buildscript {
      repositories {
          mavenCentral()
      }
      dependencies {
          classpath 'com.android.tools.build:gradle:0.5.+'
      }
  }
  apply plugin: 'android-library'
  
  android {
      compileSdkVersion 19
      buildToolsVersion "19.0.1"
  
      sourceSets {
          main {
              manifest.srcFile 'AndroidManifest.xml'
              java.srcDirs = ['src']
              resources.srcDirs = ['src']
              aidl.srcDirs = ['src']
              renderscript.srcDirs = ['src']
              res.srcDirs = ['res']
              assets.srcDirs = ['assets']
          }
      }
  }
  </code></pre>
  
  <p>I've already tried several possible solutions found in other threads, but nothing seems to work. </p>
  
  <p>I've also compared my project's structure and all its .gradle files to another project that's successfully building, and I couldn't find anything missing.</p>
  
  <p>Unlike other problems I've found in related threads, the stack trace here doesn't seem to provide anything specific on why the exception is raised. Any ideas?</p>