Function signals_group 

fn signals_group(pgid: Pid, own_pgid: Option<Pid>) -> bool

Whether the process group of a child gets signalled. Group 1 would end up as kill(-1), which kills everything conmon-rs is allowed to, and the group of this server would kill it as well. A container process which did not get a group of its own shares the one of its runtime, which runs in a group of its own.