The package golang-github-nebulouslabs-fastrand 0.0~git20181203.6fb6489-3 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-nebulouslabs-fastrand -- More information about golang-github-nebulouslabs-fastrand: https://pkg.kali.org/pkg/golang-github-nebulouslabs-fastrand
