=> Fetching arti-arti-v2.6.0.tar.gz
=> Total size: 4441709 bytes
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file arti-arti-v2.6.0.tar.gz
ftp: Can't LOOKUP `gitlab.torproject.org:https': No address associated with hostname
ftp: Can't connect to `gitlab.torproject.org:https'
fetch: Unable to fetch expected file arti-arti-v2.6.0.tar.gz
ftp: Error retrieving file `404 Not Found'
fetch: Unable to fetch expected file arti-arti-v2.6.0.tar.gz
*** Error code 1

Stop.
make: stopped making "checksum" in /usr/pkgsrc/net/arti