[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/207/ : UNSTABLE in 1h 37m 41s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/200/ : UNSTABLE in 3h 02m 14s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/199/ : UNSTABLE in 3h 05m 14s