syntax_data: {"ast_node_type":"other","tokens":[{"end":82,"kind":"keyword","start":0,"text":"Err(CodegenObligationError::UnconstrainedParam(guar))"}]}
source_snippet:         Err(CodegenObligationError::UnconstrainedParam(guar)) => return Err(guar),
context_before:         }
context_after:     };