[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/209/ : UNSTABLE in 1h 38m 26s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/202/ : UNSTABLE in 4h 29m 25s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/201/ : UNSTABLE in 3h 03m 44s