The package golang-github-opencontainers-image-spec 1.1.0~rc2-3 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/golang-github-opencontainers-image-spec -- More information about golang-github-opencontainers-image-spec: http://pkg.kali.org/pkg/golang-github-opencontainers-image-spec
