Packer Template causing 1.2.4 Crash

gistfile1.txt

{
  "_ANCHORS": [
    {
      "boot_command": [
        "<esc><f6><esc>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs>",
        "initrd=/install/initrd.gz ",
        "auto=true ",
        "url=http://{{.HTTPIP}}:{{.HTTPPort}}/{{user `preseed_file`}} ",
        "language={{user `language`}} ",
        "country={{user `country`}} ",
        "locale={{user `locale`}} ",
        "hostname={{user `vm_name`}} ",
        "domain={{user `domain`}} ",
        "interface=auto ",
        "console-setup/ask_detect=false ",
        "keyboard-configuration/layoutcode={{user `keyboard`}} ",
        "vga=788 noprompt quiet --<enter>"
      ],
      "boot_wait": "{{user `boot_wait`}}",
      "communicator": "{{user `communicator`}}",
      "disk_size": "{{user `disk_size`}}",
      "headless": "{{user `headless`}}",
      "http_directory": "{{user `http_directory`}}",
      "http_port_max": "{{user `http_port_max`}}",
      "http_port_min": "{{user `http_port_min`}}",
      "iso_checksum": "{{user `iso_checksum`}}",
      "iso_checksum_type": "{{user `iso_checksum_type`}}",
      "iso_checksum_url": "{{user `iso_checksum_url`}}",
      "iso_target_extension": "iso",
      "iso_target_path": "{{user `packer_cache_dir`}}/{{user `iso_file`}}",
      "iso_urls": [
        "{{user `iso_path_internal`}}/{{user `iso_file`}}",
        "{{user `iso_path_external`}}/{{user `iso_file`}}"
      ],
      "output_directory": "{{user `output_directory`}}",
      "shutdown_command": "echo '{{user `ssh_password`}}' | sudo -E -S poweroff",
      "shutdown_timeout": "{{user `shutdown_timeout`}}",
      "vm_name": "{{user `vm_name`}}"
    },
    {
      "ssh_agent_auth": "{{user `ssh_agent_auth`}}",
      "ssh_disable_agent_forwarding": "{{user `ssh_disable_agent_forwarding`}}",
      "ssh_file_transfer_method": "{{user `ssh_file_transfer_method`}}",
      "ssh_handshake_attempts": "{{user `ssh_handshake_attempts`}}",
      "ssh_keep_alive_interval": "{{user `ssh_keep_alive_interval`}}",
      "ssh_password": "{{user `ssh_password`}}",
      "ssh_port": "{{user `ssh_port`}}",
      "ssh_pty": "{{user `ssh_pty`}}",
      "ssh_timeout": "{{user `ssh_timeout`}}",
      "ssh_username": "{{user `ssh_username`}}"
    },
    {
      "binary": false,
      "execute_command": "echo '{{user `ssh_password`}}' | {{.Vars}} sudo -E -S '{{.Path}}'",
      "expect_disconnect": true,
      "inline_shebang": "/bin/sh -e",
      "skip_clean": false,
      "start_retry_timeout": "{{user `start_retry_timeout`}}",
      "type": "shell"
    }
  ],
  "builders": [
    {
      "boot_command": [
        "<esc><f6><esc>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs>",
        "initrd=/install/initrd.gz ",
        "auto=true ",
        "url=http://{{.HTTPIP}}:{{.HTTPPort}}/{{user `preseed_file`}} ",
        "language={{user `language`}} ",
        "country={{user `country`}} ",
        "locale={{user `locale`}} ",
        "hostname={{user `vm_name`}} ",
        "domain={{user `domain`}} ",
        "interface=auto ",
        "console-setup/ask_detect=false ",
        "keyboard-configuration/layoutcode={{user `keyboard`}} ",
        "vga=788 noprompt quiet --<enter>"
      ],
      "boot_wait": "{{user `boot_wait`}}",
      "communicator": "{{user `communicator`}}",
      "disk_size": "{{user `disk_size`}}",
      "format": "ova",
      "guest_additions_mode": "disable",
      "guest_os_type": "Ubuntu_64",
      "hard_drive_discard": false,
      "hard_drive_interface": "sata",
      "hard_drive_nonrotational": false,
      "headless": "{{user `headless`}}",
      "http_directory": "{{user `http_directory`}}",
      "http_port_max": "{{user `http_port_max`}}",
      "http_port_min": "{{user `http_port_min`}}",
      "iso_checksum": "{{user `iso_checksum`}}",
      "iso_checksum_type": "{{user `iso_checksum_type`}}",
      "iso_checksum_url": "{{user `iso_checksum_url`}}",
      "iso_interface": "sata",
      "iso_target_extension": "iso",
      "iso_target_path": "{{user `packer_cache_dir`}}/{{user `iso_file`}}",
      "iso_urls": [
        "{{user `iso_path_internal`}}/{{user `iso_file`}}",
        "{{user `iso_path_external`}}/{{user `iso_file`}}"
      ],
      "keep_registered": "{{user `keep_registered`}}",
      "name": "vbox",
      "output_directory": "{{user `output_directory`}}",
      "post_shutdown_delay": "0s",
      "sata_port_count": "1",
      "shutdown_command": "echo '{{user `ssh_password`}}' | sudo -E -S poweroff",
      "shutdown_timeout": "{{user `shutdown_timeout`}}",
      "skip_export": false,
      "ssh_agent_auth": "{{user `ssh_agent_auth`}}",
      "ssh_disable_agent_forwarding": "{{user `ssh_disable_agent_forwarding`}}",
      "ssh_file_transfer_method": "{{user `ssh_file_transfer_method`}}",
      "ssh_handshake_attempts": "{{user `ssh_handshake_attempts`}}",
      "ssh_host_port_max": "{{user `ssh_host_port_max`}}",
      "ssh_host_port_min": "{{user `ssh_host_port_min`}}",
      "ssh_keep_alive_interval": "{{user `ssh_keep_alive_interval`}}",
      "ssh_password": "{{user `ssh_password`}}",
      "ssh_port": "{{user `ssh_port`}}",
      "ssh_pty": "{{user `ssh_pty`}}",
      "ssh_skip_nat_mapping": false,
      "ssh_timeout": "{{user `ssh_timeout`}}",
      "ssh_username": "{{user `ssh_username`}}",
      "type": "virtualbox-iso",
      "vboxmanage": [
        [
          "modifyvm",
          "{{.Name}}",
          "--memory",
          "{{user `memory`}}"
        ],
        [
          "modifyvm",
          "{{.Name}}",
          "--cpus",
          "{{user `cpus`}}"
        ]
      ],
      "virtualbox_version_file": "/tmp/.vbox_version",
      "vm_name": "{{user `vm_name`}}",
      "vrdp_bind_address": "{{user `vnc_vrdp_bind_address`}}",
      "vrdp_port_max": "{{user `vnc_vrdp_port_max`}}",
      "vrdp_port_min": "{{user `vnc_vrdp_port_min`}}"
    },
    {
      "accelerator": "kvm",
      "boot_command": [
        "<esc><f6><esc>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs><bs><bs><bs><bs><bs><bs><bs>",
        "<bs><bs><bs>",
        "initrd=/install/initrd.gz ",
        "auto=true ",
        "url=http://{{.HTTPIP}}:{{.HTTPPort}}/{{user `preseed_file`}} ",
        "language={{user `language`}} ",
        "country={{user `country`}} ",
        "locale={{user `locale`}} ",
        "hostname={{user `vm_name`}} ",
        "domain={{user `domain`}} ",
        "interface=auto ",
        "console-setup/ask_detect=false ",
        "keyboard-configuration/layoutcode={{user `keyboard`}} ",
        "vga=788 noprompt quiet --<enter>"
      ],
      "boot_wait": "{{user `boot_wait`}}",
      "communicator": "{{user `communicator`}}",
      "disk_cache": "writeback",
      "disk_compression": false,
      "disk_discard": "ignore",
      "disk_image": false,
      "disk_interface": "virtio-scsi",
      "disk_size": "{{user `disk_size`}}",
      "format": "raw",
      "headless": "{{user `headless`}}",
      "http_directory": "{{user `http_directory`}}",
      "http_port_max": "{{user `http_port_max`}}",
      "http_port_min": "{{user `http_port_min`}}",
      "iso_checksum": "{{user `iso_checksum`}}",
      "iso_checksum_type": "{{user `iso_checksum_type`}}",
      "iso_checksum_url": "{{user `iso_checksum_url`}}",
      "iso_skip_cache": false,
      "iso_target_extension": "iso",
      "iso_target_path": "{{user `packer_cache_dir`}}/{{user `iso_file`}}",
      "iso_urls": [
        "{{user `iso_path_internal`}}/{{user `iso_file`}}",
        "{{user `iso_path_external`}}/{{user `iso_file`}}"
      ],
      "machine_type": "pc",
      "name": "qemu",
      "net_device": "virtio-net",
      "output_directory": "{{user `output_directory`}}",
      "qemu_binary": "{{user `qemu_binary`}}",
      "qemuargs": [
        [
          "-m",
          "{{user `memory`}}M"
        ],
        [
          "-smp",
          "{{user `cpus`}}"
        ]
      ],
      "shutdown_command": "echo '{{user `ssh_password`}}' | sudo -E -S poweroff",
      "shutdown_timeout": "{{user `shutdown_timeout`}}",
      "skip_compaction": true,
      "ssh_agent_auth": "{{user `ssh_agent_auth`}}",
      "ssh_disable_agent_forwarding": "{{user `ssh_disable_agent_forwarding`}}",
      "ssh_file_transfer_method": "{{user `ssh_file_transfer_method`}}",
      "ssh_handshake_attempts": "{{user `ssh_handshake_attempts`}}",
      "ssh_host_port_max": "{{user `ssh_host_port_max`}}",
      "ssh_host_port_min": "{{user `ssh_host_port_min`}}",
      "ssh_keep_alive_interval": "{{user `ssh_keep_alive_interval`}}",
      "ssh_password": "{{user `ssh_password`}}",
      "ssh_port": "{{user `ssh_port`}}",
      "ssh_pty": "{{user `ssh_pty`}}",
      "ssh_timeout": "{{user `ssh_timeout`}}",
      "ssh_username": "{{user `ssh_username`}}",
      "type": "qemu",
      "use_default_display": false,
      "vm_name": "{{user `vm_name`}}",
      "vnc_bind_address": "{{user `vnc_vrdp_bind_address`}}",
      "vnc_port_max": "{{user `vnc_vrdp_port_max`}}",
      "vnc_port_min": "{{user `vnc_vrdp_port_min`}}"
    }
  ],
  "description": "{{user `description`}}",
  "min_packer_version": "1.2.3",
  "post-processors": [
    {
      "compression_level": 6,
      "keep_input_artifact": true,
      "only": [
        "vbox",
        "qemu"
      ],
      "output": "{{user `output_directory`}}/{{user `vm_name`}}-{{user `version`}}-{{build_name}}.box",
      "type": "vagrant",
      "vagrantfile_template": "{{user `vagrantfile_template`}}"
    },
    {
      "compression_level": 6,
      "format": ".gz",
      "keep_input_artifact": true,
      "only": [
        "qemu"
      ],
      "output": "{{user `output_directory`}}/{{user `vm_name`}}.raw.gz",
      "type": "compress"
    },
    {
      "execute_command": "chmod +x \"{{.Script}}\"; {{.Vars}} \"{{.Script}}\"",
      "inline": [
        "echo '---' > {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "echo 'name: {{user `vm_name`}}' >> {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "echo 'description: {{user `description`}}' >> {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "echo 'versions:' >> {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "echo '- version: {{user `version`}}' >> {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "echo '  providers:' >> {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "echo '  - name: XXXPROVIDER' >> {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "echo '    url: http://server/vm/{{user `vm_name`}}/{{user `vm_name`}}-{{user `version`}}-'{{build_name}}'.box' >> {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "echo '    checksum_type: sha256' >> {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "echo '    checksum: XXXCHECKSUM' >> {{user `output_directory`}}/{{user `vm_name`}}.yaml",
        "if [ 'vbox' = '{{build_name}}' ]; then sed -i 's/XXXPROVIDER/virtualbox/' '{{user `output_directory`}}/{{user `vm_name`}}.yaml'; fi",
        "if [ 'qemu' = '{{build_name}}' ]; then sed -i 's/XXXPROVIDER/libvirt/' '{{user `output_directory`}}/{{user `vm_name`}}.yaml'; fi"
      ],
      "inline_shebang": "/bin/sh -e",
      "only": [
        "vbox",
        "qemu"
      ],
      "type": "shell-local"
    }
  ],
  "provisioners": [
    {
      "binary": false,
      "execute_command": "echo '{{user `ssh_password`}}' | {{.Vars}} sudo -E -S '{{.Path}}'",
      "expect_disconnect": true,
      "inline": [
        "echo '{{user `ssh_username`}} ALL=(ALL) NOPASSWD: ALL' > /etc/sudoers.d/99{{user `ssh_username`}}",
        "chmod 0440 /etc/sudoers.d/99{{user `ssh_username`}}"
      ],
      "inline_shebang": "/bin/sh -e",
      "only": [
        "vbox",
        "qemu"
      ],
      "skip_clean": false,
      "start_retry_timeout": "{{user `start_retry_timeout`}}",
      "type": "shell"
    },
    {
      "binary": false,
      "execute_command": "echo '{{user `ssh_password`}}' | {{.Vars}} sudo -E -S '{{.Path}}'",
      "expect_disconnect": true,
      "inline": [
        "apt-get update",
        "apt-get --yes dist-upgrade"
      ],
      "inline_shebang": "/bin/sh -e",
      "skip_clean": false,
      "start_retry_timeout": "{{user `start_retry_timeout`}}",
      "type": "shell"
    },
    {
      "binary": false,
      "execute_command": "echo '{{user `ssh_password`}}' | {{.Vars}} sudo -E -S '{{.Path}}'",
      "expect_disconnect": true,
      "inline": [
        "apt-get --assume-yes install python2.7-minimal",
        "update-alternatives --install /usr/bin/python python /usr/bin/python2.7 10"
      ],
      "inline_shebang": "/bin/sh -e",
      "skip_clean": false,
      "start_retry_timeout": "{{user `start_retry_timeout`}}",
      "type": "shell"
    },
    {
      "binary": false,
      "execute_command": "echo '{{user `ssh_password`}}' | {{.Vars}} sudo -E -S '{{.Path}}'",
      "expect_disconnect": true,
      "inline": [
        "apt-get clean"
      ],
      "inline_shebang": "/bin/sh -e",
      "skip_clean": false,
      "start_retry_timeout": "{{user `start_retry_timeout`}}",
      "type": "shell"
    },
    {
      "binary": false,
      "execute_command": "echo '{{user `ssh_password`}}' | {{.Vars}} sudo -E -S '{{.Path}}'",
      "expect_disconnect": true,
      "inline": [
        "dd if=/dev/zero of=/ZEROFILL bs=16M || true",
        "rm /ZEROFILL",
        "sync"
      ],
      "inline_shebang": "/bin/sh -e",
      "only": [
        "vbox",
        "qemu"
      ],
      "skip_clean": false,
      "start_retry_timeout": "{{user `start_retry_timeout`}}",
      "type": "shell"
    }
  ],
  "variables": {
    "aws_ami_name": "base-{{isotime \"2006-01-02-15-04-05\"}}",
    "aws_region": "ca-central-1",
    "aws_s3_bucket_name": "packer-bucket",
    "aws_s3_key_name": "packer-import-{{timestamp}}",
    "aws_skip_clean": "false",
    "boot_wait": "3s",
    "communicator": "ssh",
    "country": "CA",
    "cpus": "1",
    "description": "Base box for 64-bit x86 Ubuntu Bionic Beaver 18.04.x LTS",
    "disk_size": "7500",
    "domain": "",
    "headless": "false",
    "http_directory": ".",
    "http_port_max": "9000",
    "http_port_min": "8000",
    "iso_checksum": "a7f5c7b0cdd0e9560d78f1e47660e066353bb8a79eb78d1fc3f4ea62a07e6cbc",
    "iso_checksum_type": "sha256",
    "iso_file": "ubuntu-18.04-server-amd64.iso",
    "iso_path_external": "http://cdimage.ubuntu.com/releases/bionic/release",
    "iso_path_internal": "http://myserver:8080/ubuntu",
    "keep_registered": "false",
    "keyboard": "us",
    "language": "en",
    "locale": "en_CA.UTF-8",
    "memory": "512",
    "min_vagrant_version": "2.1.1",
    "output_directory": "build/{{isotime \"2006-01-02-15-04-05\"}}",
    "packer_cache_dir": "{{env `PACKER_CACHE_DIR`}}",
    "preseed_file": "source/ubuntu/bionic/base.preseed",
    "qemu_binary": "qemu-system-x86_64",
    "shutdown_timeout": "5m",
    "ssh_agent_auth": "false",
    "ssh_disable_agent_forwarding": "false",
    "ssh_file_transfer_method": "scp",
    "ssh_fullname": "Ghost Writer",
    "ssh_handshake_attempts": "10",
    "ssh_host_port_max": "4444",
    "ssh_host_port_min": "2222",
    "ssh_keep_alive_interval": "5s",
    "ssh_password": "1ma63b0rk3d",
    "ssh_port": "22",
    "ssh_pty": "false",
    "ssh_timeout": "60m",
    "ssh_username": "ghost",
    "start_retry_timeout": "5m",
    "system_clock_in_utc": "true",
    "timezone": "UTC",
    "vagrantfile_template": "source/ubuntu/bionic/base.vagrant",
    "version": "0.0.0",
    "vm_name": "base-bionic",
    "vnc_vrdp_bind_address": "127.0.0.1",
    "vnc_vrdp_port_max": "6000",
    "vnc_vrdp_port_min": "5900"
  }
}