We announced it here a while ago: https://www.reddit.com/r/rust/comments/j03i80/fosdem_2021_on...
We were encouraging others to fill the gap if they wanted but no one really stepped up so... ;) I hope that next year we'll be back in person.
If the is no Rust room, it seems that nobody from the Rust community saw need to hold these kinds of gatherings. So maybe an item for your to-do list to push for next year. (And as others have said in this thread: previously it was part of Mozilla and given Mozilla's change of priorities recently, I assume they stepped back)
Go, Kotlin, Zig, Python, JavaScript have devrooms.
It seems there is one Rust talk in the Mozilla room. But this is way less than for the other languages.
I wonder why Rust is somewhat underrepresented at FOSDEM. Or maybe my view is totally biased from reading too much HN...
Despite, now that Mozilla does not maintain Rust anymore, I think this really should get a separate devroom.
Edit: Downvote? Why? What is controversial about what I said? Really curious. That Rust should get a separate devroom? Not relevant enough? But this is even what I considered in the sentence before.
Or are there more Rust talks and I didn't found them? Actually, there seem to be some more, but still less than for other languages: https://fosdem.org/2021/search/?q=rust