[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/338/ : SUCCESS in 1h 39m 15s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/331/ : SUCCESS in 4h 35m 31s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/40/ : SUCCESS in 4h 19m 17s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/330/ : UNSTABLE in 3h 21m 57s