[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/550/ : UNSTABLE in 1h 41m 58s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/550/ : UNSTABLE in 2h 54m 07s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/268/ : UNSTABLE in 3h 33m 51s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/552/ : SUCCESS in 3h 36m 39s