Comment (by Roland Haas):

I had hoped the reverting Formaline commits A ff8e96f "Formaline: mark tarballs as INTERMEDIATE rather than PRECIOUS", 780936d "Formaline: mark non-atomically created files SECONDARY" , and fa3e623 "Formaline: remove temporary source files once no longer needed" would be sufficient perturbation since they were one of the more recent changes to the build system.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2345/infinite-make-loop-building-on-blue-waters