How do you figure Rust handles this better than Ada? Ada's runtime has always been configurable. You can customise the runtime library fairly easily to strip out things that don't suit your target platform. Most compilers even ship with a 'Zero Footprint (zfp)' runtime which is designed for minimal overhead.
You could make the exact same argument about C if you wanted. C's standard library, as implemented for most operating systems, is poorly suited for real-time systems too. That's why it's modified to be fit for purpose when targeting them.
Whether people know it or not, they've been living in the Ada world for a long time. A good deal of the world's critical real-time systems have been running on Ada for decades. Flight, and fire control systems in aircraft, Many major ATC systems, etc. The list goes on, and on.
You could make the exact same argument about C if you wanted. C's standard library, as implemented for most operating systems, is poorly suited for real-time systems too. That's why it's modified to be fit for purpose when targeting them.
Whether people know it or not, they've been living in the Ada world for a long time. A good deal of the world's critical real-time systems have been running on Ada for decades. Flight, and fire control systems in aircraft, Many major ATC systems, etc. The list goes on, and on.