I disagree. There was an article somewhere about servo, mentioning advantages of rust vs C++ . One example was how less intermediate copies were made, as rust

I disagree. There was an article somewhere about servo, mentioning advantages of rust vs C++ . One example was how less intermediate copies were made, as rust made it clear what data was immutable. Another was how rust made threading more easy, as it was more clear what data needed locks. Rust safety on the small scale is an enabler for stability in the large scale, giving the possibility to take more risky optimizations. This is exactly where C and C++ fall flat. You can write small scale stable software with them, but multy decade multi team 1000k+ lines of software turns in a CVE fest. A lot more effort in documenting interface details and validation need to be done,because the compiler can't do it for you