As 3.13 beta is only out for a few hours, not reporting there yet -- it'd take some time to figure out whether that's even a cryptography, pyo3 or maturin issue, and the maintainers will very likely run into this soon enough and know where to file it.
Things do build now, but cryptography apparently has trouble installing properly. Log: https://gitlab.com/aiocoap/aiocoap/-/jobs/6816483816
As 3.13 beta is only out for a few hours, not reporting there yet -- it'd take some time to figure out whether that's even a cryptography, pyo3 or maturin issue, and the maintainers will very likely run into this soon enough and know where to file it.