[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/127/ : SUCCESS in 1h 38m 38s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/119/ : SUCCESS in 3h 26m 36s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/119/ : UNSTABLE in 3h 56m 41s