[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/451/ : UNSTABLE in 1h 37m 07s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/447/ : SUCCESS in 3h 24m 39s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/159/ : SUCCESS in 4h 42m 04s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/451/ : FAILURE in 5h 00m 00s