[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/431/ : UNSTABLE in 1h 33m 22s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/427/ : UNSTABLE in 3h 10m 45s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/137/ : UNSTABLE in 3h 53m 38s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/431/ : UNSTABLE in 4h 00m 34s