[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/492/ : UNSTABLE in 1h 44m 01s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/491/ : SUCCESS in 3h 20m 20s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/208/ : SUCCESS in 3h 23m 41s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/494/ : UNSTABLE in 4h 51m 03s