Crate for locking by name

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13 
struct LockByName<'a> {
    name: &'static str,
    lok: Arc<Mutex<()>>,
    guard: MutexGuard<'a, ()>
}

// ...

        let guard = lok.clone().lock().unwrap(); // locks here
        LockByName { lok, name, guard } // item for drop

This looks like a self-referential struct, which will definitely cause problems. You have to store the MutexGuard separately from the Mutex.