[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/194/ : UNSTABLE in 1h 38m 38s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/187/ : UNSTABLE in 2h 59m 44s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/186/ : UNSTABLE in 4h 03m 27s