I will reply, despite the fact that you haven't provided the information I requested (iOS SDK version, Windows version, etc.), and despite the fact that you posted twice for the same problem. I am committed to provide help to everybody but these behaviors are really wearing me out.

This one falls under the "mixed languages" (mixed Swift+ObjC target) limitation, which is described in the first line of the big red "limitations & workarounds" paragraph of the documentation. The builder doesn't build mixed-language targets yet, only Xcode does.