[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/505/ : UNSTABLE in 1h 33m 39s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/504/ : SUCCESS in 3h 22m 09s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/221/ : SUCCESS in 3h 18m 29s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/507/ : UNSTABLE in 3h 37m 52s