[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/513/ : UNSTABLE in 1h 41m 46s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/512/ : SUCCESS in 3h 21m 44s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/229/ : UNSTABLE in 3h 55m 30s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/515/ : UNSTABLE in 4h 52m 50s