Berlin based technology consultancy specialising in the Rust programming language. We offer development, implementation, training and long-term support.
Well, of course you should stick to rustc if you don't need the certification. I get the impression you mix up thing and the purpose of a certified compiler.
Ferrous Systems is working on certifying a specific version of rustc, and hence make it possible to use rust for projects where such certification is required. And certification is required for things like programming medical equipment. If you are hooked in to life support, it is good if the compiler did the thing it was supposed to do.... a crash in such programs can be fatal in a very literal way.
Also, notice that they try to do this without forking and by contributing upstream.
It's something that I never understood for other certified toolchain. What is a value of a certified toolchain containing known bugs, including critical and/or security bugs that are fixed upstream?
First of all, sometimes I write in a stream of consciousness half-jerking style. It's not meant to be taken 100% seriously. I thought the writing style itself, when I do that, makes that clear!
Secondly, whatever that is of real technical value from the Ferrocene project, wasn't sold well by that ad. This could be by design, and maybe no one here would fall under the target audience of it. But then, I would question the point of posting this ad here in the first place.
Thirdly, the ad mentions nothing regarding Ferrocene's general availability (binaries, source, source+binaries, neither), nor is there any mention of software licenses. I think you would agree that mentioning this directly in the ad would have made it infinitely more informative for readers around here.