[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/271/ : UNSTABLE in 1h 42m 26s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/264/ : SUCCESS in 3h 36m 55s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/264/ : UNSTABLE in 3h 13m 16s