The lesson for other projects is very different if the reason these are all C++ bugs is just "We didn't ask Mythos for the bugs in Rust" versus if the difference is that asking Mythos for similar bugs in the Rust is futile because it won't find any.

Some of this is tempered if the pattern is that Mythos finds bugs mostly in dusty old C++ but the rates are much, much lower in newer C++, the reverse of Google's earlier finding for human researchers.