DTrace could support demangling symbols for Rust/C++
Today when using DTrace to profile a process you will get mangled symbols from stack()/ustack().
You can post process this output with the in gate demangle utility or use something like c++filt, however it might be nice if DTrace could do this automatically for you.
It looks at least macOS has opted to have DTrace demangle the stacks by default as noted in the man page:
C++ MANGLED NAMES By default, dtrace uses the demangled names of C++ symbols. You can tell dtrace to use the mangled symbol names by passing -xmangled to the command.