[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/152/ : UNSTABLE in 1h 57m 31s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/145/ : UNSTABLE in 3h 54m 26s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/144/ : SUCCESS in 3h 30m 26s