slow:Process.kill raises Errno::ESRCH if the process does not exist
slow:Process.kill accepts a Symbol as a signal name
slow:Process.kill accepts a String as signal name
slow:Process.kill accepts a signal name without the 'SIG' prefix
slow:Process.kill accepts a signal name with the 'SIG' prefix
slow:Process.kill acceps an Integer as a signal value
slow:Process.kill calls #to_int to coerce the pid to an Integer
slow:Process.kill signals multiple processes
slow:Process.kill returns the number of processes signaled
slow:Process.kill signals the process group if the PID is zero
slow:Process.kill signals the process group if the signal number is negative
slow:Process.kill signals the process group if the short signal name starts with a minus sign
slow:Process.kill signals the process group if the full signal name starts with a minus sign
fails(flakey):Process.kill signals the process group if the short signal name starts with a minus sign
