[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/531/ : UNSTABLE in 1h 42m 00s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/530/ : UNSTABLE in 3h 10m 58s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/249/ : UNSTABLE in 3h 51m 20s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/533/ : UNSTABLE in 4h 54m 21s