[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/334/ : SUCCESS in 1h 37m 57s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/327/ : SUCCESS in 4h 33m 40s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/36/ : SUCCESS in 3h 15m 08s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/326/ : UNSTABLE in 3h 24m 58s