d8/r8 can give lots of warnings about MANIFEST.MF

[jonathanpeppers]

Context: #2939 (comment)

Steps to Reproduce

1. In some apps you get multiple warnings such as:

R8 : warning : Resource 'META-INF/MANIFEST.MF' already exists.

I think you might see them with a Xamarin.Forms template even, just enable d8/r8.

Expected Behavior

R8 shouldn't produce warnings by default.

Actual Behavior

We get warnings!

Version Information

Happens with 16.2, and probably all versions.

[KennyDizi]

thank you @jonathanpeppers !

[gmck]

I also get a number of those and additionally META-INF/MSFTSIG.SF and META-INF/MSFTSIG.RSA. No Forms in my stuff though.

[Afshin1980]

Same problem!

[jbtdevgit]

I also have -keep public class *extends androidx.versionedparcelable.VersionedParcelable encountered when r8 is enabled

[cosminstirbu]

Same problem

[DevEddy]

Same here

[geseru]

Same here

[Bustillox]

Same here

[andreas-gabriel]

Same here

[SavikPavel]

Same here