[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/274/ : UNSTABLE in 1h 43m 38s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/267/ : UNSTABLE in 3h 04m 33s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/267/ : SUCCESS in 4h 34m 33s