diff --git a/src/applications/differential/engine/DifferentialDiffExtractionEngine.php b/src/applications/differential/engine/DifferentialDiffExtractionEngine.php
--- a/src/applications/differential/engine/DifferentialDiffExtractionEngine.php
+++ b/src/applications/differential/engine/DifferentialDiffExtractionEngine.php
@@ -243,8 +243,6 @@
     PhabricatorContentSource $content_source) {
 
     $viewer = $this->getViewer();
-    $result_data = array();
-
     $new_diff = $this->newDiffFromCommit($commit);
 
     $old_diff = $revision->getActiveDiff();
@@ -261,8 +259,6 @@
           $old_diff,
           $new_diff);
         if ($has_changed) {
-          $result_data['vsDiff'] = $old_diff->getID();
-
           $revision_monogram = $revision->getMonogram();
           $old_id = $old_diff->getID();
           $new_id = $new_diff->getID();
@@ -336,8 +332,6 @@
       // lost a race to close the revision. That's perfectly fine, we can
       // just continue normally.
     }
-
-    return $result_data;
   }
 
   private function loadConcerningBuilds(DifferentialRevision $revision) {
diff --git a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php
--- a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php
+++ b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php
@@ -278,17 +278,13 @@
 
           $content_source = $this->newContentSource();
 
-          $update_data = $extraction_engine->updateRevisionWithCommit(
+          $extraction_engine->updateRevisionWithCommit(
             $revision,
             $commit,
             array(
               $commit_close_xaction,
             ),
             $content_source);
-
-          foreach ($update_data as $key => $value) {
-            $data->setCommitDetail($key, $value);
-          }
         }
       }
     }