[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/477/ : UNSTABLE in 1h 38m 58s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/475/ : UNSTABLE in 3h 08m 02s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-14/189/ : UNSTABLE in 3h 26m 57s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/477/ : UNSTABLE in 3h 31m 47s