How to make offcputime and similar tools work with Rust?

[alexxdgfyuih8oyl76r5t4g]

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?

[alexxdgfyuih8oyl76r5t4g]

Upd: may be some other reason.
Tried renaming debug symbols of some functions, didn't work.