That all the futures 0.2 releases are yanked from crates.io is not really great and breaks the futures support in gtk-rs. That was built on top of 0.2 as the API of that version made it much easier to implement futures support (and an executor, it has nothing to do at all with the tokio ecosystem) around the GLib API.
What do you suggest as a solution for this other than simply removing futures support for the time being again?