syntax_data: {"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"self.check_candidate_cache(stack.obligation.param_env,"}]}
source_snippet:             self.check_candidate_cache(stack.obligation.param_env, cache_fresh_trait_pred)
context_before:         if let Some(c) =
context_after:         {