diff --git a/packages/reload-safetybelt/package.js b/packages/reload-safetybelt/package.js
index fafa12a996..b342084c7e 100644
--- a/packages/reload-safetybelt/package.js
+++ b/packages/reload-safetybelt/package.js
@@ -4,12 +4,14 @@ Package.describe({
 });
 
 Package.onUse(function (api) {
+  api.use("ecmascript");
   api.use("webapp", "server");
   api.addFiles("reload-safety-belt.js", "server");
   api.addAssets("safetybelt.js", "server");
 });
 
 Package.onTest(function (api) {
+  api.use("ecmascript");
   api.addAssets("safetybelt.js", "server");
   api.use(["reload-safetybelt", "tinytest", "http", "webapp", "underscore"]);
   api.addFiles("reload-safety-belt-tests.js", "server");
diff --git a/packages/reload-safetybelt/reload-safety-belt-tests.js b/packages/reload-safetybelt/reload-safety-belt-tests.js
index 117a0110a5..8e79a6f96d 100644
--- a/packages/reload-safetybelt/reload-safety-belt-tests.js
+++ b/packages/reload-safetybelt/reload-safety-belt-tests.js
@@ -1,10 +1,11 @@
-var script = Assets.getText("safetybelt.js");
+await (async () => {
+  var script = await Assets.getText("safetybelt.js");
 
-Tinytest.add("reload-safetybelt - safety belt is added", function (test) {
-  test.isTrue(_.some(
-    WebAppInternals.additionalStaticJs,
-    function (js, pathname) {
-      return js === script;
-    }
-  ));
-});
+  Tinytest.add("reload-safetybelt - safety belt is added", function (test) {
+    test.isTrue(
+      _.some(WebAppInternals.additionalStaticJs, function (js, pathname) {
+        return js === script;
+      })
+    );
+  });
+})();
diff --git a/packages/reload-safetybelt/reload-safety-belt.js b/packages/reload-safetybelt/reload-safety-belt.js
index 4c255ab3a7..60bd28b6e6 100644
--- a/packages/reload-safetybelt/reload-safety-belt.js
+++ b/packages/reload-safetybelt/reload-safety-belt.js
@@ -3,4 +3,6 @@
 // chance of hitting an old server for the HTML and the new server for the JS or
 // CSS.  This prevents you from displaying the page in that case, and instead
 // reloads it, presumably all on the new version now.
-WebAppInternals.addStaticJs(Assets.getText("safetybelt.js"));
+await (async () => {
+  WebAppInternals.addStaticJs(await Assets.getText("safetybelt.js"));
+})();
diff --git a/packages/test-in-console/run.sh b/packages/test-in-console/run.sh
index 8b2aa13623..20df9742e4 100755
--- a/packages/test-in-console/run.sh
+++ b/packages/test-in-console/run.sh
@@ -10,6 +10,10 @@ export METEOR_HOME=`pwd`
 
 export phantom=$phantom
 
+# force fibers to be disabled
+export DISABLE_FIBERS=1
+export IGNORE_ASYNC_PLUGIN=1
+
 # only install dependencies if required
 if [ "$phantom" = true ]
 then