App crash right after launch

[shoheikawano]

The app crashes right after I launch it on Nexus 5 Android M preview. (Not sure if it occurs in other environment as well.)

Below is the crash log I got when the app crashes:

08-09 02:46:35.398  19335-19335/com.ogaclejapan.qiitanium.dev E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.ogaclejapan.qiitanium.dev, PID: 19335
    java.lang.LinkageError: com.ogaclejapan.qiitanium.presentation.activity.BootActivity
            at dalvik.system.DexFile.defineClassNative(Native Method)
            at dalvik.system.DexFile.defineClass(DexFile.java:226)
            at dalvik.system.DexFile.loadClassBinaryName(DexFile.java:219)
            at dalvik.system.DexPathList.findClass(DexPathList.java:338)
            at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:54)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
            at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
            at android.app.Instrumentation.newActivity(Instrumentation.java:1067)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2318)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2477)
            at android.app.ActivityThread.-wrap11(ActivityThread.java)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1345)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:148)
            at android.app.ActivityThread.main(ActivityThread.java:5415)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:725)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:615)