I'd sooner master rust, which seems to have a lot of buzz around it. the world has needed a low-level prog-lang that's less painful than C/C++ for a while, rust may have enough merit to displace a lot of C/C++ dev - I just hope it gets well standardised, in such a way that C++ isn't.
C++ has an ISO standard. It doesn't get much more standardised.
Furthermore, I'm not just talking about the existence of a standard, but the complexity of the standard (C++is v. big), and also how much that standard restricts, and hence results in conformal, predictable code.