syntax_data: {"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                 if !r.has_escaping_bound_vars() && !rty.has_escaping_bound_vars() {
context_before:                 // WfReference
context_after:                     let cause = self.cause(ObligationCauseCode::ReferenceOutlivesReferent(t));