How to make `offcputime` and similar tools work with `Rust`?

I need to get `bcc` tools to work with `Rust`.

It seems to work correctly with C programs, but not Rust programs.
If I'm right it's due to te difference in debug symbols (cause it kinda works but not 100% the way its suppose to).
I can see the most outer funcs, but not the ones inside them.
So if I have `a->b->c` I will only see `a` and then some systemcalls in the reslting flamegraph.
If it wac a C program `a->b->c` would be present just as expected.

Is there a known workaround?
If no, then what is responsible for getting debug sybmols?
What part of the code should I change if any?

Start by reproducing the report with a Rust program containing nested functions and the offcputime tool, then compare its flamegraph with the reported C behavior. Trace how debug symbols and stack frames are obtained; done means inner Rust functions appear correctly rather than only the outer function and system calls.

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