syntax_data: {"ast_node_type":"variable","tokens":[{"end":95,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                     let uninit_ty = Ty::new_maybe_uninit(tcx, field_ty.instantiate(tcx, args));
context_before:                     let field_ty = EarlyBinder::bind(local.ty);
context_after:                     cx.spanned_layout_of(uninit_ty, local.source_info.span)