syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"debug_assert!(!obligation.predicate.has_escaping_bound_vars());"}]}
source_snippet:         debug_assert!(!obligation.predicate.has_escaping_bound_vars());
context_before:     ) -> SelectionResult<'tcx, SelectionCandidate<'tcx>> {