title: Crashlytics Fabric : Failed to execute task
body: <p>I've been having an issue and I don't know how to fix it.</p>
  
  <p>My project use crashlytics, but it's always crash and not sent report. I have a TimeoutException:</p>
  
  <pre><code>08-25 03:04:31.876    2856-2856/connectivit.app E/Fabric﹕ Failed to execute task.
  java.util.concurrent.TimeoutException
          at java.util.concurrent.FutureTask.get(FutureTask.java:176)
          at com.crashlytics.android.core.CrashlyticsExecutorServiceWrapper.executeSyncLoggingException(CrashlyticsExecutorServiceWrapper.java:44)
          at com.crashlytics.android.core.CrashlyticsUncaughtExceptionHandler.uncaughtException(CrashlyticsUncaughtExceptionHandler.java:275)
          at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693)
          at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690)
  --------- beginning of crash
  08-25 03:04:31.876    2856-2856/connectivit.app E/AndroidRuntime﹕ FATAL EXCEPTION: main
  Process: connectivit.app, PID: 2856
  java.lang.RuntimeException: Unable to start activity ComponentInfo{connectivit.app/connectivit.app.Activity.Main.MainActivity}: java.lang.RuntimeException: This is a crash
          at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
          at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
          at android.app.ActivityThread.access$800(ActivityThread.java:144)
          at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
          at android.os.Handler.dispatchMessage(Handler.java:102)
          at android.os.Looper.loop(Looper.java:135)
          at android.app.ActivityThread.main(ActivityThread.java:5221)
          at java.lang.reflect.Method.invoke(Native Method)
          at java.lang.reflect.Method.invoke(Method.java:372)
          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
   Caused by: java.lang.RuntimeException: This is a crash
          at connectivit.app.Activity.Main.MainActivity.initTabs(MainActivity.java:117)
          at connectivit.app.Activity.Main.MainActivity.onCreate(MainActivity.java:57)
          at android.app.Activity.performCreate(Activity.java:5933)
          at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
          at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
          at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
          at android.app.ActivityThread.access$800(ActivityThread.java:144)
          at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
          at android.os.Handler.dispatchMessage(Handler.java:102)
          at android.os.Looper.loop(Looper.java:135)
          at android.app.ActivityThread.main(ActivityThread.java:5221)
          at java.lang.reflect.Method.invoke(Native Method)
          at java.lang.reflect.Method.invoke(Method.java:372)
          at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
          at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
  </code></pre>
  
  <p><strong>EDIT</strong></p>
  
  <p>My build.gradle file :</p>
  
  <pre><code>buildscript {
      repositories {
          maven { url 'https://maven.fabric.io/public' }
      }
  
      dependencies {
          classpath 'io.fabric.tools:gradle:1.+'
      }
  }
  apply plugin: 'com.android.application'
  apply plugin: 'io.fabric'
  
  repositories {
      maven { url "https://jitpack.io" }
      maven { url 'https://maven.fabric.io/public' }
  }
  
  android {
      signingConfigs {
          release {
              keyAlias 'android.keystore'
              storeFile file('/Users/jordan/android.keystore.jks')
              storePassword ""
              keyPassword ""
          }
          config {
              keyAlias 'androiddebugkey'
              keyPassword 'android'
              storeFile file('/Users/jordan/.android/debug.keystore')
              storePassword 'android'
          }
      }
      compileSdkVersion 23
      buildToolsVersion '23'
      defaultConfig {
          applicationId “com.test"
          minSdkVersion 14
          targetSdkVersion 23
          versionCode 12
          versionName '1'
  
          // Enabling multidex support.
          multiDexEnabled true
      }
  
      buildTypes {
          debug {
              versionNameSuffix "-DEBUG"
          }
          release {
              minifyEnabled true
              zipAlignEnabled true
  
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
              signingConfig signingConfigs.release
          }
      }
      packagingOptions {
          exclude 'META-INF/ASL2.0'
          exclude 'META-INF/LICENSE'
          exclude 'META-INF/NOTICE'
      }
      lintOptions {
          // set to true to turn off analysis progress reporting by lint
          quiet false
          // if true, stop the gradle build if errors are found
          abortOnError false
          // if true, only report errors
          ignoreWarnings true
      }
      productFlavors {
      }
  }
  
  dependencies {
      //--- Android
      compile 'com.android.support:design:23.0.0'
      compile 'com.android.support:appcompat-v7:23.0.0'
      compile 'com.android.support:multidex:1.0.0'
  
      //--- Fabric
      compile('com.crashlytics.sdk.android:crashlytics:2.4.0@aar') {
          transitive = true;
      }
  }
  </code></pre>
  
  <p>Crashlytics initialization :</p>
  
  <pre><code>public class MyApplication extends MultiDexApplication {
  
   @Override
  public void onCreate() {
      super.onCreate();
  
      Fabric.with(this, new Crashlytics());
  
      if (!BuildConfig.DEBUG) {
          Log.d("Ez", "Release mode. Crashlytics enable");
          //Fabric.with(this, new Crashlytics());
      } else {
          Log.d("Ez", "Debug mode. Crashlytics disable");
      }
  
      throw new RuntimeException("This is a crash");
      }
  }
  </code></pre>