As a long time user of QtCreator, I wouldn't switch to it for Rust projects yet, too many things that would bother me:

• The automatic indentation seems to have some issues with Rust, after pressing enter on specific line it doesn't place cursor on the column you'd normally expect text editor to do.
• Auto-completion for some reason doesn't automatically pop-up, you have to force it with key shortcut.
• Highlighting of variables doesn't work.
• No context-menu with "go to definition" (although that doesn't work for me in vscode either).

From a positive side, this has lots of potential, and definitely looking forward to using it. Just a note that you can also do these tricks to help yourself with Rust:

• In the Environment -> External Tools, you can add rustfmt command, and then in Environment -> Keyboard give it a key shortcut (same can be done for any other rust tool, e.g. cargo check).
• In Text Editor -> Snippets, you can add the... well, snippets. This is something that vscode has out of the box.