expected `*const extern "C" fn(*mut libc::types::common::c95::c_void, *mut ode::common::Struct_dxGeom, *mut ode::common::Struct_dxGeom)`,
    found `&extern "C" fn(&mut libc::types::common::c95::c_void, *mut ode::common::Struct_dxGeom, *mut ode::common::Struct_dxGeom) {near_callback}`
(expected fn pointer,
    found fn item) [E0308]