Comment (by Roland Haas):

Since the commit d1de2e1a "CarpetLib: Remove mutable member in bboxset2" of carpet itself was reviewed positively I will cherry pick it to master (leaving out the math changes) unless objected by Saturday.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2426/g-10-possibly-miscompiles-parts-of-carpet