Android: CrashlyticsMissingDependencyException on application startup - google-fabric

Question

We are trying to integrate Crashlytics into our android-application (armeabi-v7a). The application is written in both Java and C++, so we need native crash reporting too.
Unfortunately, we have com.crashlytics.android.core.CrashlyticsMissingDependencyException while launching a successful built application.
06-19 18:22:47.245 : ASSERTION (EXCEPTION!!!) JavaUnhandledExceptionHandler, thread: Thread[main,5,main]
06-19 18:22:47.247 : java.lang.RuntimeException: Unable to start activity ComponentInfo{com.organization/com.organization.ActivityName}: io.fabric.sdk.android.services.concurrency.UnmetDependencyException: com.crashlytics.android.core.CrashlyticsMissingDependencyException:
06-19 18:22:47.247 : This app relies on Crashlytics. Please sign up for access at https://fabric.io/sign_up,
06-19 18:22:47.247 : install an Android build tool and ask a team member to invite you to this app's organization.
06-19 18:22:47.247 :
06-19 18:22:47.247 : at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
06-19 18:22:47.247 : at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
06-19 18:22:47.247 : at android.app.ActivityThread.-wrap12(ActivityThread.java)
06-19 18:22:47.247 : at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
06-19 18:22:47.247 : at android.os.Handler.dispatchMessage(Handler.java:102)
06-19 18:22:47.247 : at android.os.Looper.loop(Looper.java:154)
06-19 18:22:47.247 : at android.app.ActivityThread.main(ActivityThread.java:6119)
06-19 18:22:47.247 : at java.lang.reflect.Method.invoke(Native Method)
06-19 18:22:47.247 : at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
06-19 18:22:47.247 : at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
06-19 18:22:47.247 : Caused by: io.fabric.sdk.android.services.concurrency.UnmetDependencyException: com.crashlytics.android.core.CrashlyticsMissingDependencyException:
06-19 18:22:47.247 : This app relies on Crashlytics. Please sign up for access at https://fabric.io/sign_up,
06-19 18:22:47.247 : install an Android build tool and ask a team member to invite you to this app's organization.
Neither debug nor release have run. Could you please provide us more detailed installation guide to solve the issue? All the installation steps were performed in accordance with the docs pages:
https://fabric.io/downloads/ant
https://docs.fabric.io/android/crashlytics
Build system: Android Ant
OS: Mac OS X El Capitan
Android API: 23
The project structure is assumed to be as follows:
AndroidManifest.xml
ant.properties
assets/
bin/
build.xml
cert/
custom_rules.xml
fabric.credentials
fabric.properties
kit-libs/
kits.properties
libs/
local.properties
obj/
project.properties
res/
Fabric related settings:
AndroidManifest.xml:
<meta-data android:name="com.crashlytics.ApiKey" android:value=organizationApiSecret/>
<meta-data android:name="io.fabric.ApiKey" android:value=organizationApiKey/>
custom_rules.xml:
<import file="path/to/sdk/crashlytics/crashlytics_build.xml"/>
kits.properties (generated):
com.crashlytics.sdk.android:crashlytics:2.5.5
com.crashlytics.sdk.android:crashlytics-ndk:1.1.2
project.properties (generated):
manifestmerger.enabled=true
target=android-23
android.library.reference.2=kit-libs/com-crashlytics-sdk-android_crashlytics
fabric.properties:
apiSecret=organizationApiSecret
apiKey=organizationApiKey
enableNDK=true
androidNdkOut=obj
androidNdkLibsOut=libs
Installation steps:
compile c++
ant crashlytics-onboard
removing unwanted architectures: kit-libs/com-crashlytics-sdk-android_crashlytics-ndk/libs/
ant our_target
ant crashlytics-symbols