Packer 0.12.1 under Windows' symbolic link

packer.log

2016/12/25 18:37:23 [INFO] Packer version: 0.12.1
2016/12/25 18:37:23 Packer Target OS/Arch: windows amd64
2016/12/25 18:37:23 Built with Go Version: go1.7.3
2016/12/25 18:37:23 Using internal plugin for virtualbox-iso
2016/12/25 18:37:23 Using internal plugin for amazon-ebs
2016/12/25 18:37:23 Using internal plugin for openstack
2016/12/25 18:37:23 Using internal plugin for cloudstack
2016/12/25 18:37:23 Using internal plugin for file
2016/12/25 18:37:23 Using internal plugin for profitbricks
2016/12/25 18:37:23 Using internal plugin for qemu
2016/12/25 18:37:23 Using internal plugin for virtualbox-ovf
2016/12/25 18:37:23 Using internal plugin for vmware-iso
2016/12/25 18:37:23 Using internal plugin for amazon-chroot
2016/12/25 18:37:23 Using internal plugin for amazon-instance
2016/12/25 18:37:23 Using internal plugin for vmware-vmx
2016/12/25 18:37:23 Using internal plugin for googlecompute
2016/12/25 18:37:23 Using internal plugin for null
2016/12/25 18:37:23 Using internal plugin for parallels-iso
2016/12/25 18:37:23 Using internal plugin for parallels-pvm
2016/12/25 18:37:23 Using internal plugin for digitalocean
2016/12/25 18:37:23 Using internal plugin for docker
2016/12/25 18:37:23 Using internal plugin for hyperv-iso
2016/12/25 18:37:23 Using internal plugin for oneandone
2016/12/25 18:37:23 Using internal plugin for amazon-ebsvolume
2016/12/25 18:37:23 Using internal plugin for azure-arm
2016/12/25 18:37:23 Using internal plugin for windows-restart
2016/12/25 18:37:23 Using internal plugin for chef-solo
2016/12/25 18:37:23 Using internal plugin for file
2016/12/25 18:37:23 Using internal plugin for puppet-server
2016/12/25 18:37:23 Using internal plugin for salt-masterless
2016/12/25 18:37:23 Using internal plugin for shell
2016/12/25 18:37:23 Using internal plugin for shell-local
2016/12/25 18:37:23 Using internal plugin for windows-shell
2016/12/25 18:37:23 Using internal plugin for ansible
2016/12/25 18:37:23 Using internal plugin for ansible-local
2016/12/25 18:37:23 Using internal plugin for chef-client
2016/12/25 18:37:23 Using internal plugin for powershell
2016/12/25 18:37:23 Using internal plugin for puppet-masterless
2016/12/25 18:37:23 Using internal plugin for compress
2016/12/25 18:37:23 Using internal plugin for docker-save
2016/12/25 18:37:23 Using internal plugin for amazon-import
2016/12/25 18:37:23 Using internal plugin for atlas
2016/12/25 18:37:23 Using internal plugin for docker-import
2016/12/25 18:37:23 Using internal plugin for manifest
2016/12/25 18:37:23 Using internal plugin for vagrant-cloud
2016/12/25 18:37:23 Using internal plugin for artifice
2016/12/25 18:37:23 Using internal plugin for checksum
2016/12/25 18:37:23 Using internal plugin for docker-tag
2016/12/25 18:37:23 Using internal plugin for shell-local
2016/12/25 18:37:23 Using internal plugin for vagrant
2016/12/25 18:37:23 Using internal plugin for docker-push
2016/12/25 18:37:23 Using internal plugin for googlecompute-export
2016/12/25 18:37:23 Using internal plugin for vsphere
2016/12/25 18:37:23 Attempting to open config file: C:\Users\Basil\AppData\Roaming\packer.config
2016/12/25 18:37:23 [WARN] Config file doesn't exist: C:\Users\Basil\AppData\Roaming\packer.config
2016/12/25 18:37:23 Packer config: &{DisableCheckpoint:false DisableCheckpointSignature:false PluginMinPort:10000 PluginMaxPort:25000 Builders:map[digitalocean:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-digitalocean oneandone:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-oneandone openstack:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-openstack qemu:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-qemu vmware-iso:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-vmware-iso null:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-null vmware-vmx:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-vmware-vmx googlecompute:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-googlecompute parallels-iso:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-parallels-iso amazon-ebs:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-amazon-ebs virtualbox-ovf:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-virtualbox-ovf amazon-chroot:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-amazon-chroot amazon-instance:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-amazon-instance parallels-pvm:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-parallels-pvm docker:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-docker hyperv-iso:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-hyperv-iso azure-arm:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-azure-arm amazon-ebsvolume:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-amazon-ebsvolume virtualbox-iso:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-virtualbox-iso cloudstack:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-cloudstack file:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-file profitbricks:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-builder-profitbricks] PostProcessors:map[checksum:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-checksum vsphere:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-vsphere amazon-import:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-amazon-import docker-import:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-docker-import vagrant-cloud:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-vagrant-cloud atlas:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-atlas docker-save:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-docker-save docker-tag:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-docker-tag shell-local:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-shell-local vagrant:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-vagrant docker-push:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-docker-push compress:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-compress artifice:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-artifice googlecompute-export:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-googlecompute-export manifest:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-post-processor-manifest] Provisioners:map[puppet-server:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-puppet-server salt-masterless:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-salt-masterless shell:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-shell chef-client:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-chef-client powershell:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-powershell puppet-masterless:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-puppet-masterless ansible-local:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-ansible-local windows-restart:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-windows-restart chef-solo:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-chef-solo file:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-file shell-local:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-shell-local windows-shell:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-windows-shell ansible:C:\root\HASHIC~1\bin\packer.exe-PACKERSPACE-plugin-PACKERSPACE-packer-provisioner-ansible]}
2016/12/25 18:37:23 Setting cache directory: R:\!spikes\packer-symlink\link\packer_cache
2016/12/25 18:37:23 Loading builder: virtualbox-ovf
2016/12/25 18:37:23 Plugin could not be found. Checking same directory as executable.
2016/12/25 18:37:23 Current exe path: C:\root\HASHIC~1\bin\packer.exe
2016/12/25 18:37:23 Creating plugin client for path: C:\root\HASHIC~1\bin\packer.exe
2016/12/25 18:37:23 Starting plugin: C:\root\HASHIC~1\bin\packer.exe []string{"C:\\root\\HASHIC~1\\bin\\packer.exe", "plugin", "packer-builder-virtualbox-ovf"}
2016/12/25 18:37:23 Waiting for RPC address for: C:\root\HASHIC~1\bin\packer.exe
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:23 [INFO] Packer version: 0.12.1
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Packer Target OS/Arch: windows amd64
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Built with Go Version: go1.7.3
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Attempting to open config file: C:\Users\Basil\AppData\Roaming\packer.config
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 [WARN] Config file doesn't exist: C:\Users\Basil\AppData\Roaming\packer.config
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Packer config: &{DisableCheckpoint:false DisableCheckpointSignature:false PluginMinPort:10000 PluginMaxPort:25000 Builders:map[] PostProcessors:map[] Provisioners:map[]}
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Setting cache directory: R:\!spikes\packer-symlink\link\packer_cache
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 args: []string{"packer-builder-virtualbox-ovf"}
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Plugin minimum port: 10000
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Plugin maximum port: 25000
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Plugin address: tcp 127.0.0.1:10000
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Waiting for connection...
2016/12/25 18:37:24 packer.exe: 2016/12/25 18:37:24 Serving a plugin connection...
Template validation failed. Errors are shown below.
2016/12/25 18:37:24 Preparing build: vbox
2016/12/25 18:37:24 Build 'vbox' prepare failure: 1 error(s) occurred:

* source_path is invalid: GetFileAttributesEx \\?\R:: The parameter is incorrect.
2016/12/25 18:37:24 ui error: Template validation failed. Errors are shown below.
2016/12/25 18:37:24 ui error: Errors validating build 'vbox'. 1 error(s) occurred:

* source_path is invalid: GetFileAttributesEx \\?\R:: The parameter is incorrect.
2016/12/25 18:37:24 waiting for all plugin processes to complete...

Errors validating build 'vbox'. 1 error(s) occurred:

* source_path is invalid: GetFileAttributesEx \\?\R:: The parameter is incorrect.
2016/12/25 18:37:24 C:\root\HASHIC~1\bin\packer.exe: plugin process exited 

test.cmd

REM All OK
packer validate test.json

REM Create link with full path
mklink /J link "\\?\%cd%"

REM Test new link. Gives something like that:
REM <JUNCTION>     link [\\?\R:\!spikes\packer-symlink]
dir *link*

cd link
set PACKER_LOG=1
REM But under the link it goes wrong...
packer validate test.json > test.log 2>&1

test.json

{
	"variables": {
		"name": "UbuntuServer16.04.1-amd64",
		"base_image": "UbuntuServer16.04.1-amd64-kernel",
		"packer_output_dir": "."
	},
	"builders": [
		{
			"name": "vbox",
			"vm_name": "{{ user `name` }}",
			"type": "virtualbox-ovf",
			"source_path": "{{ user `packer_output_dir` }}/{{ user `base_image` }}-vbox/{{ user `base_image` }}.ovf",
			"output_directory": "{{ user `packer_output_dir` }}/{{ user `name` }}-vbox",
			"ssh_username": "ubuntu"
		}
	]
}