Fest fails to compile with latest nightly

[ghost]

Fest fails to compile on the latest version of rust-nightly with an error in futures-await, possibly need to update the version of ruma-client in use, and/or ruma-client's dependancies.

[jplatte]

I'm aware of the issue. On it.

[jplatte]

So unless we use unsafe, this is blocked on alexcrichton/futures-await#79 (as you seem to have figured out yourself). I'd prefer to just wait for a fix for that issue, and to keep using an older Nightly until then.

[ghost]

I've been told it's perfectly fine to use unsafe to fix this since it's just futures-await code, and they never return unmovable generators. But if you want to wait that's fine.

[jplatte]

Fixed in 863d75e