When I look at the way C++ has been developed and implemented over the years, I can’t help but think that a relatively small and questionably sustainable group of compiler engineers, no matter how passionate (and people do burn out) cannot possibly hope to sustain development of Rust indefinitely, especially as the project’s complexity and convolutions continue to further complicate and convolve. The only reason C++ has been able to is that it has very extensive industrial sustenance behind at least two of its major compilers, and presumably they also help keep GCC up to par. I don’t know, maybe GCC can somehow set the standard for what Rust can hope to do over the years, but it seems like a minor miracle from the outside.