[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/341/ : SUCCESS in 1h 42m 58s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/334/ : SUCCESS in 3h 12m 22s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/43/ : SUCCESS in 3h 16m 35s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/333/ : UNSTABLE in 4h 48m 02s