Comment (by Roland Haas):

The workarounds (indirectly) also cause issues on new M1 macOS machines since Apple seems to have removed the finite function call that is used in some places instead of std::isfininite (and just isfinite does not work).

--
Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2407/cactus-math-work-arounds-break-carpetx