Info from the Maintainer:
vvv NNTP 1.9.1 doesn't apply cleanly to mutt 1.9.5. It's possible you could patch the patch here however for the time being NNTP will be broken if set. emailed the maintainer over the issue with 1.9.5. Waiting for vvv NNTP to be updated.
Also, update greeting to match its update to 1.9.5. This patch didn't change.
Can that be committed with this into: "Update mail/mutt for broken NNTP option and greeting version"?