This change seems to have broken building for me:
Loading /private/tmp/emacs-head-20190506-8835-1tfm5kd/lisp/menu-bar.el (source)...
Loading /private/tmp/emacs-head-20190506-8835-1tfm5kd/lisp/emacs-lisp/lisp.el (source)...
Wrong type argument: char-table-p, nil
make: *** [bootstrap-emacs.pdmp] Error 255
make: *** [src] Error 2
I'm assuming that (unicode-property-table-internal 'paired-bracket) returns nil, since that is the only place that references chartables at all in the file.
Full log, which has details of the macOS system this runs on, attached. I'm pretty certain, though, that this is probably not platform-dependent. Should probably guard against the error by verifying that you have a value from that query.