std::fs::create_dir_all(lock.parent().unwrap())?;

            {
                let mut f = OpenOptions::new()
                    .write(true)
                    .create(true)
                    .append(true)
                    .open("log")
                    .unwrap();
                writeln!(f, "accepted").unwrap()
            }

                    {
                        let mut f = OpenOptions::new()
                            .write(true)
                            .create(true)
                            .append(true)
                            .open("log")
                            .unwrap();
                        writeln!(f, "n = {:?}", *n_clients.lock().await).unwrap();
                    }

                        }
                        {
                            let mut f = OpenOptions::new()
                                .write(true)
                                .create(true)
                                .append(true)
                                .open("log")
                                .unwrap();
                            writeln!(f, "n = {:?}", *n_clients.lock().await).unwrap();