Unity 2019.2.0b2 now available - known bug for Android build

Unity 2019.2.0b2 has now finished UCB vetting and is available for general usage! When vetting we did detect an issue with Android builds but we've decided to release the beta to users regardless

The bug we have encountered is that the first build for any given Android build target fails with "[Unity] Error building player because build target was unsupported". This appears to be caused by a failure in the Library cache system and has a relatively simple workaround - just run another build and it will succeed! Any further builds will pull down the library cache and build successfully, however clean builds (which do not download the library cache) will fail.

We're currently working on investigating and fixing this, however it may not be fixed until a future Unity release.