Use the latest build status when checking docs.rs (#7613)

When documentation for a crate is rebuilt the `builds.json` can return
multiple results, ordered latest first, so we must take the first
element of the array rather than the last.

Co-authored-by: repo-ranger[bot] <39074581+repo-ranger[bot]@users.noreply.github.com>

services/docsrs/docsrs.service.js

@@ -52,9 +52,7 @@ export default class DocsRs extends BaseJsonService {
   }
 
   async handle({ crate, version = 'latest' }) {
-    const { build_status: buildStatus } = (
-      await this.fetch({ crate, version })
-    ).pop()
+    const [{ build_status: buildStatus }] = await this.fetch({ crate, version })
     return this.constructor.render({ version, buildStatus })
   }
 }

services/docsrs/docsrs.tester.js

@@ -10,6 +10,10 @@ t.create('Failing docs')
   .get('/tensorflow/0.16.1.json')
   .expectBadge({ label: 'docs@0.16.1', message: 'failing' })
 
+t.create('Multiple builds, latest passing')
+  .get('/bevy_tweening/0.3.1.json')
+  .expectBadge({ label: 'docs@0.3.1', message: 'passing' })
+
 t.create('Getting latest version works')
   .get('/rand/latest.json')
   .expectBadge({