The package golang-github-docker-go-metrics 0.0~git20170503.0.d466d4f-1 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-docker-go-metrics -- More information about golang-github-docker-go-metrics: http://pkg.kali.org/pkg/golang-github-docker-go-metrics