A calendar object whose recurrence rules use up the expansion work budget was logged with the whole object as the rule expansion error's details. Anyone who can get an object stored, a sharee or a sender whose invitation is processed, can cause that on purpose and repeatedly, copying calendar content into the server log each time. The error is still logged, with its reason and limit, but without the object. Other rule expansion errors keep logging it as before. Test: on the previous commit the budget test's object (40 events) came back as the log details; now it is left out, and an event with no start date still logs its object.