The package golang-github-cespare-xxhash 0.0~git20170604.0.1b6d2e4-1 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-cespare-xxhash -- More information about golang-github-cespare-xxhash: http://pkg.kali.org/pkg/golang-github-cespare-xxhash