[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/450/ : UNSTABLE in 1h 31m 16s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/446/ : SUCCESS in 4h 48m 47s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/158/ : SUCCESS in 3h 26m 25s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/450/ : UNSTABLE in 4h 39m 13s