[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/135/ : UNSTABLE in 1h 41m 42s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/127/ : UNSTABLE in 4h 10m 12s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/127/ : UNSTABLE in 3h 33m 52s