I think TiKV is a good example where team chose Rust over Modern C++. Rust gives the same performance and is close to metal like C when it is necessary. All possible memory management mistakes it catches at compile time if it's not "unsafe" and this is a really great!

With Rust I can hack without fear! I shouldn't remember tons of C++ rules which are described in http://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines, "C++ programming language" book, also here https://herbsutter.com/gotw/, etc and I can focus on algorithms and implementation.

C++ combines a lot of different paradigms m.b. more correct I would like to say "C++ paradigms hell"! Which of C++ subsets is the right way, no one understands. Even Bjarne Stroustrup said, "Within C++, there is a much smaller and cleaner language struggling to get out." - and where is this "smaller and cleaner language"?. What is the idiomatic style in C++? Is it Google guidelines, CoreCpp guidelines or other enormous guides?

I look inside a lot of C++ projects and each of them has different styles, use different paradigms, sometimes look like different languages!

Rust, Go, C, Java code bases look the same, they have their own idiomatic style, their own way.

I think Rust is the next step in the evolution of system programming language.