Where in the documentation does it state that everything just works (as it would in go)? I see a list of incompatibilities / limitations etc., that not only apply to your own code but any 3rd party library.
Read on the trimming warnings (i.e. there are none? it means everything just works) and try out a couple projects :)
Very specific areas require reflection which is not analyzable with the main user being serialization and serialization just happens to be completely solved.