Test VBox fails

../../regtest 74188

 in dir /srv/buildbot/Test_VBox/build (timeout 1200 secs)

 watching logfiles {}

 argv: ['../../regtest', '74188']

 environment:

  HOME=/var/lib/buildbot

  LANG=en_US.UTF-8

  LANGUAGE=en_US:en

  LIBVIRT_DEFAULT_URI=qemu:///system

  LOGNAME=buildbot

  MAIL=/var/mail/buildbot

  PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games

  PWD=/srv/buildbot/Test_VBox/build

  SHELL=/bin/sh

  USER=buildbot

  XDG_RUNTIME_DIR=/run/user/110

  XDG_SESSION_ID=c1

 using PTY: True

* Testing bootcdregtest-74188.iso

cp: cannot stat '/mnt/regtest-iso/bootcdregtest-74188.iso': No such file or directory

[SYSREG] sysreg2 r2334 starting

libvirt: VirtualBox Driver error : internal error: unable to initialize VirtualBox driver API

[SYSREG] Error: failed to connect to test machine.

[SYSREG] Status: Testing process aborted!

program finished with exit code 2

elapsedTime=0.132802