use Test2::V0;

subtest outer => sub {
    ok(1, "outer 1");
    subtest inner => sub {
        ok(1, "inner 1");
        subtest deeper => sub {
            ok(1, "deeper 1");
            subtest even_deeper => sub {
                ok(1, "even deeper 1");
                diag "diag";
                sleep 10;
            };
        };
    };
};

1;
