Jenkins check-merged failure on Vdsm 4.1

Hi, after my Vdsm patch https://gerrit.ovirt.org/75329 in ovirt-4.1 branch had been merged, Jenkins check-merged job http://jenkins.ovirt.org/job/vdsm_4.1_check-merged-el7-x86_64/173/ failed with the following error: 07:01:21 @ Start specified VMs: 07:01:21 # Start nets: 07:01:21 * Create network vdsm_functional_tests_lago: 07:01:27 * Create network vdsm_functional_tests_lago: Success (in 0:00:05) 07:01:27 # Start nets: Success (in 0:00:05) 07:01:27 # Start vms: 07:01:27 * Starting VM vdsm_functional_tests_host-el7: 07:02:07 libvirt: QEMU Driver error : monitor socket did not show up: No such file or directory 07:02:07 * Starting VM vdsm_functional_tests_host-el7: ERROR (in 0:00:40) 07:02:07 # Start vms: ERROR (in 0:00:40) 07:02:07 # Destroy network vdsm_functional_tests_lago: 07:02:07 # Destroy network vdsm_functional_tests_lago: ERROR (in 0:00:00) 07:02:07 @ Start specified VMs: ERROR (in 0:00:46) 07:02:07 Error occured, aborting 07:02:07 Traceback (most recent call last): 07:02:07 File "/usr/lib/python2.7/site-packages/lago/cmd.py", line 936, in main 07:02:07 cli_plugins[args.verb].do_run(args) 07:02:07 File "/usr/lib/python2.7/site-packages/lago/plugins/cli.py", line 184, in do_run 07:02:07 self._do_run(**vars(args)) 07:02:07 File "/usr/lib/python2.7/site-packages/lago/utils.py", line 495, in wrapper 07:02:07 return func(*args, **kwargs) 07:02:07 File "/usr/lib/python2.7/site-packages/lago/utils.py", line 506, in wrapper 07:02:07 return func(*args, prefix=prefix, **kwargs) 07:02:07 File "/usr/lib/python2.7/site-packages/lago/cmd.py", line 264, in do_start 07:02:07 prefix.start(vm_names=vm_names) 07:02:07 File "/usr/lib/python2.7/site-packages/lago/prefix.py", line 1033, in start 07:02:07 self.virt_env.start(vm_names=vm_names) 07:02:07 File "/usr/lib/python2.7/site-packages/lago/virt.py", line 331, in start 07:02:07 vm.start() 07:02:07 File "/usr/lib/python2.7/site-packages/lago/plugins/vm.py", line 299, in start 07:02:07 return self.provider.start(*args, **kwargs) 07:02:07 File "/usr/lib/python2.7/site-packages/lago/vm.py", line 106, in start 07:02:07 dom = self.libvirt_con.createXML(self._libvirt_xml()) 07:02:07 File "/usr/lib64/python2.7/site-packages/libvirt.py", line 3782, in createXML 07:02:07 if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self) 07:02:07 libvirtError: monitor socket did not show up: No such file or directory 07:02:07 Took 210 seconds The error is apparently unrelated to my patch since: 1. my patch should have nothing to do with VM start; 2. Jenkins has run successfully on the following patch (https://gerrit.ovirt.org/75321). FWIW, the preceding patch (https://gerrit.ovirt.org/75038) has run successfully too. Do you know what's wrong? Thanks, Milan