[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/491/ : UNSTABLE in 1h 33m 22s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/490/ : UNSTABLE in 3h 12m 02s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/207/ : SUCCESS in 3h 25m 00s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/493/ : UNSTABLE in 4h 28m 27s