0.3 removed tokio::io::Registration, breaking dbus-tokio crate

[diwic]

Hi,

It looks like all possibilities to add a custom fd have been removed with Tokio 0.3, or possibly it has been moved to somewhere I can't find it. In Tokio 0.2 we used tokio::io::Registration for this purpose.

This is a fundamental feature for the dbus-tokio crate, so at this point we can't upgrade to 0.3. The code is also something that has been tested and patched by several community members as we had some hard time removing race conditions etc, so if the logic has been significantly changed, we need to start that process over from scratch.
The somewhat hairy code is here in case you want a look at it: https://github.com/diwic/dbus-rs/blob/master/dbus-tokio/src/connection.rs

[Darksonn]

This is due to the removal of mio from the public API of Tokio. The next release will contain a type called AsyncFd, which was merged with #2903, however it has not been released yet.

[carllerche]

Fixed by #2903.