[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/452/ : UNSTABLE in 1h 33m 35s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/448/ : UNSTABLE in 4h 45m 29s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/160/ : UNSTABLE in 3h 38m 13s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/452/ : UNSTABLE in 4h 39m 03s