There is a known build failure in the Bean component right now due to a change on the Weld side. Tom is working with Pete to get it resolved. For the time being, you can do the following to build a working snapshot version of Weld locally:
> cd [your dev dir]
> git clone git://github.com/weld/core.git weld-core
> cd weld-core
> git checkout d69174bbf1485759699956183438d17657fd3c3d
> mvn install
This will pop a compatible version of weld core into your local maven repository which will make our bean component tests much happier. I will reply back to this thread when the issue is fixed.
FYI - Tom just fixed this issue. No need for a weld checkout at all now.