D vs Rust

[nbro via Digitalmars-d]

I have loved C++ when I first started learning it a pair of years 
ago (then I stopped for some time for some work reasons), and 
quite recently I have discovered D, which seems apparently a 
better language from the design point of view, especially in 
supporting OO design and modularisation, maybe I am just wrong 
since I know just a little of D so far, but I really had some 
problems just in setting up a simple OO project, i.e. importing 
classes, there are .h and .cpp files, etc, which only make 
everything confusing and make you learn stupid things instead of 
being productive. D also seems to have a cleaner syntax in 
general. C++ is becoming more and more a mess because they keep 
introducing new functionalities to make C++ compete with new 
languages, and I'm starting hating it. Languages should not just 
be powerful but simple enough to be productive.

Apart from this, what are the real advantages of D over Rust? 
They seem to be similar languages in what they want to achieve. 
Rust seems to be younger and the syntax seems to be slightly 
different from the C-like syntax. I am not such concerned or 
interested with the syntax advantages of a language over the 
other, but more about in general what one does better than the 
other. Overall, which one has a better design and a more 
promising future? Which one is more performant, in which 
situations? If you could answer all these questions it would be 
nice. I'm still deciding which one to learn and invest my time 
on, but I would like to have also your more experienced and 
expert opinion.