syntax_data: {"ast_node_type":"variable","tokens":[{"end":64,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let lhs = recurse_build(tcx, body, lhs, root_span)?;
context_before:             let lhs_ty = body.exprs[lhs].ty;
context_after:             let rhs_ty = body.exprs[rhs].ty;