Windows hangs when attempting to hardhat's process streams, so try to kill the process externally.
TODO: This doesn't actually kill the process, as the pid given by chronos is an msys2 pid, and the command is used to kill a windows process. `ps -ef` in msys2 also doesn't show hardhat running as a process, so the only way to kill the process is to kill it with the windows pid. So we need to figure out a way to get a windows pid from the msys2 pid.