EntitiesRes::delete() runs before LazyUpdate::exec_mut()

[JMS55]

Description

Since both functions are atomic, I expect them to run in the order I call them. delete() seems to always run before exec_mut(), however, which causes issues since the entity is no longer alive when exec_mut() is called.

Doing lazy_update.exec(move |world| world.entities().delete(entity).unwrap()); instead of delete() works however

Meta

Rust version: 1.35.0 (3c235d560 2019-05-20)
Specs version / commit: 0.14.3
Operating system: Windows 10

Reproduction

1. Call LazyUpdate::exec_mut() and try to get a component of entity X within
2. Call EntitiesRes::delete(X)
3. Crashes in exec_mut(), as entity X is no longer alive

Expected behavior

Entity X would still be alive

[WaDelma]

This is not a bug: exec_mut is run lazily and delete is atomic.
When delete gets called the entity is instantly destroyed. The components associated with this entity will be then lazily deleted in maintain.
Everything LazyUpdate does it does lazily on maintain. All LazyUpdate stuff is done after doing the component deletion, which is not documented (it's kinda implicitly mentioned in maintain), but the other way around would be odd as the entity doesn't exists anymore.

[JMS55]

Ahh thanks for clearing that up