[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/523/ : UNSTABLE in 1h 42m 18s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/522/ : UNSTABLE in 3h 28m 59s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/240/ : UNSTABLE in 3h 48m 07s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/525/ : UNSTABLE in 3h 35m 05s