[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/125/ : UNSTABLE in 1h 58m 09s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/116/ : UNSTABLE in 3h 50m 25s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/117/ : FAILURE in 2s