Is there an valid proguard rule for RxJava and FasterXML?

Question

Now the only problem stopping me from using kotlin in production is that I can't find a correct proguard file for it.

What I used:

1.Kotlin

2.Anko

3.Jackson-Kotlin-module

Here's the warning message:

:app:proguardRelease
Warning: com.fasterxml.jackson.databind.ext.DOMSerializer: can't find referenced class org.w3c.dom.bootstrap.DOMImplementationRegistry
Warning: rx.internal.util.unsafe.BaseLinkedQueueConsumerNodeRef: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.ConcurrentCircularArrayQueue: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.ConcurrentSequencedCircularArrayQueue: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.MpmcArrayQueueConsumerField: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.MpmcArrayQueueProducerField: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.MpscLinkedQueue: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.SpmcArrayQueueConsumerField: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.SpmcArrayQueueProducerField: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.SpscArrayQueue: can't find referenced class sun.misc.Unsafe
Warning: rx.internal.util.unsafe.UnsafeAccess: can't find referenced class sun.misc.Unsafe
Warning: there were 41 unresolved references to classes or interfaces.

Answer 1

It has nothing to do with Kotlin. Ignore the warnings in your proguard file:

-dontwarn sun.misc.Unsafe
-dontwarn org.w3c.dom.bootstrap.DOMImplementationRegistry

Answer 2

a better is just to have this aar as a dependency:

https://github.com/artem-zinnatullin/RxJavaProGuardRules