syntax_data: {"ast_node_type":"variable","tokens":[{"end":82,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let ty::PseudoCanonicalInput { typing_env, value: (sig, extra_args) } = query;
context_before: ) -> Result<&'tcx FnAbi<'tcx, Ty<'tcx>>, &'tcx FnAbiError<'tcx>> {
context_after:     fn_abi_new_uncached(