Access bevy_ecs World in threads?

[supagu]

I am writing a chat bot and trying to use bevy_ecs with it.
Every time the bot responds to a chat message, it is in a separate thread.

I want to access the World in these threads to be able to manipulate the world, how ever when I try to do this, I get an error:

future cannot be sent between threads safely
within `impl Future<Output = Result<(), ()>>`, the trait `Send` is not implemented for `std::sync::MutexGuard<'_, World>`, which is required by `impl Future<Output = Result<(), ()>>: Send`

I have the World wrapped in a Mutex:

pub static ref GLOBAL_WORLD: Mutex<World> = Mutex::new(World::default());

Full src: https://github.com/bit-shift-io/text-rpg/blob/main/src/globals.rs

Inside my thread function:

                let mut world = GLOBAL_WORLD.lock().unwrap(); // Error cause by this line.
                world.spawn(Room {});

Full src: https://github.com/bit-shift-io/text-rpg/blob/main/src/commands/start_a_new_game.rs

I haven't done much with rust multi threading so not sure what options I have to resolve this problem.
Can anyone help?

[SkiFire13]

As the error message mentions, your problem is with the MutexGuard returned by lock not being Send, rather than World. You should be able to solve this by wrapping those two lines in a block, so that the MutexGuard is not in scope when the next .await is called.

[supagu]

That works, thanks!