Proguard and coverage broken due to missing ThrowableExtension class [64527520]

P3	3.0.0-beta1: Didn't find class "com.google.devtools.build.android.desugar.runtime.ThrowableExtension" “ https://issuetracker.google.com/64533199 ”	ma...@ #11
P3	can't find referenced class com.google.devtools.build.android.desugar.runtime.ThrowableExtension 3.0-beta1 “ https://issuetracker.google.com/64556098 ”	ma...@ #11
P2	Missing ThrowableExtension class causing crash on app startup “ https://issuetracker.google.com/77591528 ”	nobody@ #38

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