installworld failure on r361107 (curs_addch.3.filt)

On a recent install from FreeBSD-13.0-CURRENT-amd64-20200514-r361019-disc1.iso
I intitated a build/install world/kernel from src _at_r361107

The build of world and kernel went as anticipated, as did
the kernel install. After booting to single user for the
installworld. The install failed with:
...
dll.h /usr/include/
install -l s -o root -g wheel -m 755  curses.h /usr/include/ncurses.h
install  -o root -g wheel -m 444 curs_addch.3.filt  /usr/share/man/man3/curs_add
ch.3
install: curs_addch.3.filt: No such file or directory
*** Error code 71

Stop.
make[6]: stopped in /usr/src/lib/ncurses/ncursesw
*** Error code 1

Stop.
make[5]: stopped in /usr/src/lib/ncurses
*** Error code 1

Stop.
make[4]: stopped in /usr/src/lib
*** Error code 1

Stop.
make[3]: stopped in /usr/src
*** Error code 1

There nothing interesting/unusual in src.conf(5)
and make.conf doesn't exist.

Any chance for recovery? Or will I need initiate a new
install, and hope for the best checking out a newer revision
of src.

Thanks in advance.

--Chris