[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/202/ : UNSTABLE in 1h 38m 37s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/195/ : UNSTABLE in 4h 02m 12s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/194/ : UNSTABLE in 3h 07m 18s