|Re: [cross-project-issues-dev] Guava 15/21 warning|
Both bugs are assigned to nobody and in the Cross-Project component. I'm not sure who is responsible. However, it seems impossible to address them as there is no clear path to decide on. It looks like their main purpose is a sink for discussions. I'd suggest closing them as WONTFIX. It doesn't look like they'll ever be solved.
FWIW, there are technical solutions to allow projects to co-exist consuming different versions of Guava. Yes it is complicated and gets even more complicated when projects are re-exporting Guava as part of their APIs. But there are solutions that work.
If you believer there are specific problems with regards to the Guava libraries in Orbit please open a bug for Orbit with more details (eg., exceptions). We'll look at addressing them.