[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/198/ : UNSTABLE in 1h 55m 35s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/191/ : UNSTABLE in 3h 29m 04s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/190/ : UNSTABLE in 3h 05m 53s