[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/507/ : UNSTABLE in 1h 45m 17s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/506/ : SUCCESS in 3h 21m 19s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/223/ : SUCCESS in 3h 38m 06s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/509/ : SUCCESS in 4h 48m 38s