set logger in vacuum github commits (#1198)

diff --git a/app_dart/lib/src/request_handlers/vacuum_github_commits.dart b/app_dart/lib/src/request_handlers/vacuum_github_commits.dart
index 54758bb..75f23d9 100644
--- a/app_dart/lib/src/request_handlers/vacuum_github_commits.dart
+++ b/app_dart/lib/src/request_handlers/vacuum_github_commits.dart
@@ -36,6 +36,7 @@
   @override
   Future<Body> get() async {
     final DatastoreService datastore = datastoreProvider(config.db);
+    scheduler.setLogger(log);
 
     for (RepositorySlug slug in Config.schedulerSupportedRepos) {
       await _vacuumRepository(slug, datastore: datastore);