fix: landing when no Jenkins CI has been run for PR (#451)

lib/ci/ci_result_parser.js

@@ -117,7 +117,7 @@ class Job {
 
   async getBuildData() {
     const { cli, path } = this;
-    cli.startSpinner(`Querying data of ${path}`);
+    cli.startSpinner(`Querying data for ${path}`);
     const data = await this.getAPIData();
     cli.stopSpinner('Build data downloaded');
     return data;
@@ -679,6 +679,18 @@ class PRBuild extends TestBuild {
     const {
       result, subBuilds, changeSet, actions, timestamp
     } = data;
+
+    // No builds found.
+    if (data.status === '404') {
+      const failure = new BuildFailure(this, 'No builds found for PR');
+      this.failures = [failure];
+      return {
+        result: data.result,
+        builds: { failed: [], aborted: [], pending: [], unstable: [] },
+        failures: this.failures
+      };
+    }
+
     this.setBuildData(data);
 
     // No sub build at all