syntax_data: {"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"debug_assert!(!t.has_escaping_bound_vars());"}]}
source_snippet:                     debug_assert!(!t.has_escaping_bound_vars());
context_before:                     let t = bound_predicate.rebind(t);
context_after:                     let obligation = obligation.with(self.tcx(), t);