This looks like successful build. There are 1460 packages and only 19 of them failed. It is common that some of the packages fail to build. Unless those are packages you need then it is ok.
The packages are now in bin directory. And in case of command you run they were extracted to pkgsrepo in layout expected by updater on our servers.
Now it depends on what you want to do with those packages. You can install selected ones. You can deploy them to HTTPS server and point updater to them as a secondary repository.
Currently building medkit is not easy as script we are using is building it against our repository. I just had no time (and kind of need) to tweak it to build medkit from any repository. Just saying that there is this blocker.