For general support use the GNOME Discourse or IRC/Matrix.

Discourse

discourse.gnome.org.

Matrix

You can connect using: #rust:gnome.org.

Contact Gtk-rs developers

However, if you want to contact the Gtk-rs developers directly, there are multiple ways:

IRC

Channel #rust on irc.gimp.org server.

Github

Of course, you can also just open an issue on our repositories on github. However, please keep in mind that issues on Gtk-rs should be for bug reports or feature requests and not general support.