Am 05.03.2017 um 06:03 schrieb Norbert Preining:
This does not seem to be correct. The updated formats would be in /usr/local/texlive/2016/texmf-var/web2c/... You have a personal copy of lualatex.fmt, I guess you have called fmtutil (without the -sys) at some point.
that seems to happen quite often these days (perhaps because in the past people made their private formats for luatex when it wasn't set up?)
I wonder if the fmtutil-sys could at least detect and warn if there are private formats for the user running it as part of an update?
frank