fins2

{
  "variables": {
    "serial": ""
  },
  "builders": [
    {
      "type": "qemu",
      "accelerator": "kvm",
      "communicator": "none",
      "boot_command": ["<tab> console=ttyS0,115200n8 inst.text inst.ks=http://{{ .HTTPIP }}:{{ .HTTPPort }}/{{ user `kickstart_file` }} rd.live.check=0<enter><wait>"],

fins2

cat crash.log 
2019/12/06 13:05:19 [INFO] Packer version: 1.4.5
2019/12/06 13:05:19 Packer Target OS/Arch: linux amd64
2019/12/06 13:05:19 Built with Go Version: go1.13.4
2019/12/06 13:05:19 Detected home directory from env var: /root
2019/12/06 13:05:19 Using internal plugin for lxd
2019/12/06 13:05:19 Using internal plugin for oracle-oci
2019/12/06 13:05:19 Using internal plugin for proxmox
2019/12/06 13:05:19 Using internal plugin for qemu
2019/12/06 13:05:19 Using internal plugin for virtualbox-ovf