Created attachment 216428 [details]
Upstream rerolled the distfile, I happen to have the old one and checked the only difference is the top level directory has been renamed from Box2D-2.3.1 to box2d-2.3.1
I'm not sure if a MOVED entry is needed since the port entry "misc/box2d" is not changed, but the package has been renamed from Box2D-2.3.1 to box2d-2.3.1.
Build info is available at https://gitlab.com/swills/freebsd-ports/pipelines/171854798
A commit references this bug:
Date: Wed Jul 29 00:40:16 UTC 2020
New revision: 543640
misc/box2d: Update the port because the repository was renamed
Submitted by: lwhsu (original version)
Committed a similar patch.
They renamed the repository to lowercase.
portmgr@ previously expressed his opinion to not change PORTNAME's case, so leaving it.
Thanks for the patch!