I got a build error right at the end after / during cleanup. I ensured that the license and readme paths are pointing direct to actual files has this has been a mistake of mine in the past). I am on V2 Build 834. This was my first attempt at building with V2.
It referred to being unable to delete the jbos folder.
I attempted a rebuild and it has now worked.
I know this is a bit abstract as there is no issue now, but are there processes / activities that might impact a build ?