[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/177/ : UNSTABLE in 1h 55m 41s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/170/ : UNSTABLE in 3h 27m 04s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/169/ : SUCCESS in 2h 55m 51s