[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/420/ : UNSTABLE in 1h 46m 21s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/417/ : UNSTABLE in 3h 11m 30s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/126/ : UNSTABLE in 4h 20m 09s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/420/ : UNSTABLE in 3h 54m 52s