syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":"(Ok(c1),"}]}
source_snippet:                         (Ok(c1), Ok(c2)) => {
context_before:                     match (evaluate(c1), evaluate(c2)) {
context_after:                             match self.infcx.at(&obligation.cause, obligation.param_env).eq(