It’s a bug in the proguard.txt file in the versionedparcelable.aar version 1.0.0. This was fixed in version 1.1.0, however, if you’re not using libraries that depends on the new version you’ll get this warning in Android Studio 3.5.
In version 1.0.0 the proguard.txt file includes the following line:
-keep public class * extends androidx.versionedparcelable.VersionedParcelable
This was fixed in version 1.1.0:
-keep public class * implements androidx.versionedparcelable.VersionedParcelable
To bypass this issue you can force using the latest version by adding the following line to your build.gradle: