Dear package maintainer, This is an automated bug created due to a FTBFS when rebuilding this package with pybind11 3.0. The rebuild is being tracked in https://copr.fedorainfracloud.org/coprs/lecris/pybind11-3.0/package/psi4. If upstream supports both pybind11 3.x and 2.x with the same codebase, feel free to update the package ahead of the pybind11 update and close this bug as desired. Otherwise please let us know about the incompatibility so that we can coordinate a side-tag update together. Let me know if you encounter any issues, or need any other help.