[tex-live] tlmgr bug? and texlive.infra problem

[Karl Berry]

    Is this new? I don't have such a symlink at the moment.

Yes, latexmk is new, yesterday or the day before.

    fmtutil-sys --missing (which seemed to be what tlmgr was running)
    doesn't complain but doesn't seem to do anything either.

Then it doesn't think anything is missing.  You could try running
fmtutil-sys --all to regenerate all of them.

    The ones it couldn't regenerate don't seem to be missing altogether
    but they are the ones dated 22 Aug i.e. older than everything else.

Maybe they didn't need to be regenerated?  But since you say "tlmgr
failed", I guess you saw actual error messages.

Can't say much more without seeing the logs of the failures, which
should be next to the .fmt files (texmf-var/web2c/*/*.{log,fmt}).