[test-results] Stable check of asterisk failed

[asteriskteam at digium.com]

Build failed.

- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-11/205/ : UNSTABLE in 1h 34m 02s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-13/198/ : UNSTABLE in 3h 03m 14s
- https://jenkins.asterisk.org/jenkins/job/periodic-asterisk-master/197/ : UNSTABLE in 3h 47m 16s