syntax_data: {"ast_node_type":"other","tokens":[{"end":41,"kind":"keyword","start":0,"text":"Ok(EvaluatedToOk)"}]}
source_snippet:                         Ok(EvaluatedToOk)
context_before:                     if may_use_unstable_feature(self.infcx, obligation.param_env, symbol) {
context_after:                     } else {