[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/295/ : UNSTABLE in 1h 33m 45s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/288/ : SUCCESS in 4h 06m 18s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/288/ : UNSTABLE in 3h 44m 05s