[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/201/ : UNSTABLE in 1h 37m 59s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/194/ : UNSTABLE in 3h 00m 54s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/193/ : UNSTABLE in 4h 30m 13s