Disabled Nightly builds until we investigate this further. This was likely unnecessary but taken as a precaution. Also, I wanted to try this technique which hadn't been tried before, see bug 1568758 comment #1.
Bug 1584461 Comment 11 Edit History
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Disabled Nightly builds until we investigate this further. This was likely unnecessary but taken as a precaution EDIT: in case Calendar and other XUL add-ons fail even in an opt build. Also, I wanted to try this technique which hadn't been tried before, see bug 1568758 comment #1.