syntax_data: {"ast_node_type":"variable","tokens":[{"end":58,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let PseudoCanonicalInput { typing_env, value } = goal;
context_before: ) -> Result<T, NoSolution> {
context_after:     let (infcx, param_env) = tcx.infer_ctxt().build_with_typing_env(typing_env);