Use {globals = _G}, return lanes.lua:329: can't copy non-deep full userdata across lanes

Question

Most solutions here use lanes.gen("*",{globals = _G},func). When I run it, I get can't copy non-deep full userdata across lanes. Maybe this is because of io.stderr, io.stdout, io.stdin which are file type or lanes.core.cancel_error which is userdata type or lanes.core timer_gateway. How to use {globals = _G} or workaround? Is it a bug?