[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/511/ : UNSTABLE in 1h 48m 18s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/510/ : UNSTABLE in 3h 19m 25s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/227/ : SUCCESS in 3h 32m 37s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/513/ : SUCCESS in 4h 27m 50s