u2ps issuing a message "DEBUG: FC_WEIGHT didn't match"

[erco77]

After building and installing, as a simple test:

$ u2ps README
DEBUG: FC_WEIGHT didn't match
$

Was expecting PostScript on stdout, but that's all there is.
I added the -v flag and got:

$ u2ps -v README
Terminal area 481x732pt, final font size 1000cpt, 80 cols 73 rows
Font R aspect 600cpt xscale 1000mil name FreeMono
Font I aspect 600cpt xscale 1000mil name FreeMonoOblique
Font B aspect 600cpt xscale 1000mil name FreeMonoBold
Font O aspect 600cpt xscale 1000mil name FreeMonoBoldOblique
DEBUG: FC_WEIGHT didn't match

Is there a debug flag I should turn on to show what's being executed?