Created attachment 220904 [details]
log from poudriere
Partial context (with no expectation of a fix for an unmaintained port):
* https://redd.it/kinbx0 FreeBSD interest in file managers with Miller columns
A commit references this bug:
Date: Wed Jan 13 10:29:16 UTC 2021
New revision: 561452
Ensure that there is only one variable definition per each object, as
the C (and C++) standards mandated for years and compilers started to
enforce as of recently (Clang 11, GCC 10).
Should be fixed with ports r561452.