[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/502/ : UNSTABLE in 1h 33m 19s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/501/ : SUCCESS in 3h 21m 16s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/218/ : UNSTABLE in 3h 34m 02s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/504/ : UNSTABLE in 3h 23m 05s