[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/222/ : UNSTABLE in 1h 55m 06s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/215/ : UNSTABLE in 4h 01m 23s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/214/ : SUCCESS in 3h 50m 03s