virtualbox-iso output will be in this color.
==> virtualbox-iso: Cannot find "Default Guest Additions ISO" in vboxmanage output (or it is empty)
==> virtualbox-iso: Downloading or copying Guest additions checksums
==> virtualbox-iso: Downloading or copying Guest additions
==> virtualbox-iso: Downloading or copying ISO
virtualbox-iso: Downloading or copying: file:///root/twix/devops_packer/ubuntu-16.04.1-desktop-amd64.iso
==> virtualbox-iso: Starting HTTP server on port 8192
==> virtualbox-iso: Creating virtual machine...
==> virtualbox-iso: Creating hard drive...
==> virtualbox-iso: Creating forwarded port mapping for communicator (SSH, WinRM, etc) (host port 4365)
==> virtualbox-iso: Executing custom VBoxManage commands...
virtualbox-iso: Executing: modifyvm ubuntu-16.04.1-desktop-amd64 --memory 1024
virtualbox-iso: Executing: modifyvm ubuntu-16.04.1-desktop-amd64 --cpus 1
==> virtualbox-iso: Starting the virtual machine...
virtualbox-iso: The VM will be run headless, without a GUI. If you want to
virtualbox-iso: view the screen of the VM, connect via VRDP without a password to
==> virtualbox-iso: Waiting 15s for boot...
==> virtualbox-iso: Typing the boot command...
==> virtualbox-iso: Waiting for SSH to become available...
==> virtualbox-iso: Timeout waiting for SSH.
==> virtualbox-iso: Unregistering and deleting virtual machine...
==> virtualbox-iso: Deleting output directory...
Build 'virtualbox-iso' errored: Timeout waiting for SSH.
==> Some builds didn't complete successfully and had errors:
--> virtualbox-iso: Timeout waiting for SSH.
==> Builds finished but no artifacts were created.
I'm attaching all concerned files (except for the Ubunutu ISo "ubuntu-16.04.1-desktop-amd64.iso").
Any help with this would be appreciated.