One test is always skipped because it required inexistent /var/db/services.cdb: Replacing by services.db fix the test. https://reviews.freebsd.org/D20943
A commit references this bug: Author: olivier Date: Mon Jul 15 23:41:01 UTC 2019 New revision: 350019 URL: https://svnweb.freebsd.org/changeset/base/350019 Log: Fix filename to avoid skipping lib/libc/net/servent test. PR: 239177 Approved by: ngie MFC after: 1 month Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D20943 Changes: head/lib/libc/tests/net/Makefile
^Triage: committed back in 2019.