Jenkins runs two builds for single commit

Overview

Jenkins triggers two builds for a single commit. Using the following versions. This is possibly a problem with the GitLab plugin.

Git Plugin - 2.5.2 http://wiki.jenkins-ci.org/display/JENKINS/Git+Plugin

GitLab plugin - 1.3.0 - https://wiki.jenkins-ci.org/display/JENKINS/GitLab+Plugin | https://github.com/jenkinsci/gitlab-plugin

Jenkins v2.10

Reproduce: (available without login)

https://docs.google.com/document/d/1CbfkYLcVFuSd4-Eamaooyhu2JHqV96oyF4a5jry1A0M

Actual

Runs two builds for single commit

Expected:

Run a single build for a single commit

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ZD: https://gitlab.zendesk.com/agent/tickets/30498 Related: https://gitlab.com/gitlab-org/gitlab-ee/issues/642