[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/208/ : UNSTABLE in 1h 45m 36s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/201/ : UNSTABLE in 3h 39m 57s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/200/ : UNSTABLE in 3h 08m 08s