Job Sidebar has a blank block

I've seen this in master only so far:

Investigation from @nfriend:

I think this happens when no jobdetails are passed to the sidebar. Here's the source for that section: https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/assets/javascripts/jobs/components/sidebar.vue#L160 The containing <div> (line 160) should probably have its own v-if in case none of its children are rendered.