[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/143/ : SUCCESS in 1h 38m 39s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/136/ : UNSTABLE in 3h 57m 45s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/135/ : UNSTABLE in 2h 54m 34s