[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/520/ : UNSTABLE in 1h 41m 56s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/519/ : FAILURE in 1m 52s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/237/ : FAILURE in 1m 54s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/522/ : SUCCESS in 4h 45m 16s