[ros-users] how to read debbuild status?

There seems to be a lot of useful information in the debbuild pages,
but I have not been able to locate any details about what the various
fields mean:

http://www.ros.org/debbuild/diamondback.html

Specifically, what does the presence or absence of a version number
mean? When there is a depends missing, how to I find out what it is?
Does missing deb mean the build failed for that platform?
--
 joq