The package golang-github-gin-contrib-static 0.0~git20190511.c1cdf9c-3 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-gin-contrib-static -- More information about golang-github-gin-contrib-static: http://pkg.kali.org/pkg/golang-github-gin-contrib-static