if_chain! {
    if let Stmt_::StmtDecl(ref decl, _) = stmt.node
    if let Decl_::DeclLocal(ref local) = decl.node;
    if let Some(ref init) = local.init
    if let ExprKind::Call(ref func, ref args) = init.node;
    if let ExprKind::Path(ref path) = func.node;
    if match_qpath(path, &["{{root}}", "std", "cmp", "min"]);
    if args.len() == 2;
    if let ExprKind::Lit(ref lit) = args[0].node;
    if let LitKind::Int(3, _) = lit.node;
    if let ExprKind::Lit(ref lit1) = args[1].node;
    if let LitKind::Int(4, _) = lit1.node;
    if let PatKind::Wild = local.pat.node;
    then {
        // report your lint here
    }
}