=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching nio4r-2.3.1.gem
=> Total size: 101888 bytes
ftp: Can't LOOKUP `cdn.netbsd.org:http': Temporary failure in name resolution
ftp: Can't connect to `cdn.netbsd.org:http'
fetch: Unable to fetch expected file nio4r-2.3.1.gem
ftp: Can't LOOKUP `rubygems.org:https': Temporary failure in name resolution
ftp: Can't connect to `rubygems.org:https'
fetch: Unable to fetch expected file nio4r-2.3.1.gem
ftp: Can't LOOKUP `cdn.NetBSD.org:http': Temporary failure in name resolution
ftp: Can't connect to `cdn.NetBSD.org:http'
fetch: Unable to fetch expected file nio4r-2.3.1.gem
ftp: Can't LOOKUP `ftp6.NetBSD.org:http': Temporary failure in name resolution
ftp: Can't connect to `ftp6.NetBSD.org:http'
fetch: Unable to fetch expected file nio4r-2.3.1.gem
ftp: Can't LOOKUP `ftp.fr.NetBSD.org:http': Temporary failure in name resolution
ftp: Can't connect to `ftp.fr.NetBSD.org:http'
fetch: Unable to fetch expected file nio4r-2.3.1.gem
ftp: Can't LOOKUP `ftp.NetBSD.org:http': Temporary failure in name resolution
ftp: Can't connect to `ftp.NetBSD.org:http'
fetch: Unable to fetch expected file nio4r-2.3.1.gem
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/net/ruby-nio4r