Are you asking what kinds of errors RAII-style C++ programs make that you can't make in Golang (an easy question), or what kinds of errors you can make in Rust that you can't make in Golang (harder)?
I'm just questioning the assumption that RAII as a concept must be memory unsafe, specific language aside.
Edit: To be clear it's the latter question, but more general. C++'s implementation has many opportunities for errors, but I do not think the technique is inherently unsafe. (PL research has proven many similar systems based on unique types and borrowing to be type- and memory-safe.)
