[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/305/ : SUCCESS in 1h 40m 23s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/298/ : SUCCESS in 4h 07m 14s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/6/ : UNSTABLE in 3h 08m 21s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/298/ : UNSTABLE in 4h 46m 39s