[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/497/ : UNSTABLE in 1h 34m 47s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/496/ : SUCCESS in 3h 00m 19s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/213/ : SUCCESS in 3h 37m 13s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/499/ : UNSTABLE in 4h 28m 16s