Constant rustc_const_eval::errors::_DERIVE_rustc_session_SessionDiagnostic_session_diagnostic_sess_rustc_errors_ErrorGuaranteed_FOR_TransientMutBorrowErrRaw

const _DERIVE_rustc_session_SessionDiagnostic_session_diagnostic_sess_rustc_errors_ErrorGuaranteed_FOR_TransientMutBorrowErrRaw: ();