[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/191/ : UNSTABLE in 1h 43m 00s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/184/ : UNSTABLE in 2h 53m 33s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/183/ : UNSTABLE in 3h 35m 00s