http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p070... - this discusses a lot of issues with exceptions as in ISO C++ and concrete proposals to make exceptions cost-free. The section 4.3.5 discusses specifically memory allocations.

Including parts that relate to Linux, have nothing to do with C++ and apply to any programming language.

You also skipped the section where Rust in its present state doesn't has any kind of recovery, it just panics.