The package golang-github-leodido-go-urn 1.2.1-2 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-leodido-go-urn -- More information about golang-github-leodido-go-urn: http://pkg.kali.org/pkg/golang-github-leodido-go-urn