[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/529/ : UNSTABLE in 1h 41m 42s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/528/ : UNSTABLE in 3h 10m 44s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/246/ : UNSTABLE in 3h 49m 57s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/531/ : UNSTABLE in 3h 40m 39s