[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/139/ : SUCCESS in 1h 30m 55s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/131/ : UNSTABLE in 3h 48m 02s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/131/ : UNSTABLE in 3h 24m 41s