if let StmtKind::Local(local) = stmt.kind && let Some(init) = local.init && let ExprKind::Closure(CaptureBy::Ref, fn_decl, body_id, _, None) = init.kind && let FnRetTy::DefaultReturn(_) = fn_decl.output && expr = &cx.tcx.hir().body(body_id).value && let ExprKind::Block(block, None) = expr.kind && block.stmts.len() == 1 && let StmtKind::Semi(e) = block.stmts[0].kind && let ExprKind::Call(func, args) = e.kind && let ExprKind::Path(ref qpath) = func.kind && match_qpath(qpath, &["$crate", "io", "_print"]) && args.len() == 1 && let ExprKind::Call(func1, args1) = args[0].kind && let ExprKind::Path(ref qpath1) = func1.kind && args1.len() == 2 && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner) = args1[0].kind && let ExprKind::Array(elements) = inner.kind && elements.len() == 2 && let ExprKind::Lit(ref lit) = elements[0].kind && let LitKind::Str(s, _) = lit.node && s.as_str() == "" && let ExprKind::Lit(ref lit1) = elements[1].kind && let LitKind::Str(s1, _) = lit1.node && s1.as_str() == "\n" && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner1) = args1[1].kind && let ExprKind::Array(elements1) = inner1.kind && elements1.len() == 1 && let ExprKind::Call(func2, args2) = elements1[0].kind && let ExprKind::Path(ref qpath2) = func2.kind && args2.len() == 1 && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner2) = args2[0].kind && let ExprKind::Path(ref qpath3) = inner2.kind && match_qpath(qpath3, &["x"]) && block.expr.is_none() && let PatKind::Binding(BindingAnnotation::NONE, _, name, None) = local.pat.kind && name.as_str() == "print_text" { // report your lint here }