syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"self.tcx.dcx().span_delayed_bug("}]}
source_snippet:                                 self.tcx.dcx().span_delayed_bug(
context_before:                             } else {
context_after:                                     self.tcx.def_span(assoc.def_id),