syntax_data: {"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"saved_locals:"}]}
source_snippet:     saved_locals: &'a CoroutineSavedLocals,
context_before:     body: &'a Body<'tcx>,
context_after:     // FIXME(tmandry): Consider using sparse bitsets here once we have good