[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/501/ : UNSTABLE in 1h 36m 42s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/500/ : SUCCESS in 3h 20m 30s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/217/ : UNSTABLE in 3h 50m 38s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/503/ : UNSTABLE in 4h 27m 02s