Don't implicitly run "pub get".

test/barback/subdirectories_test.dart

Index: test/barback/subdirectories_test.dart
diff --git a/test/barback/subdirectories_test.dart b/test/barback/subdirectories_test.dart
index f08d9a12a0f66c9a9e30f7a82f1551e54dc838fb..fe207cb78d0cdb245789fac482291753fcb4fdbb 100644
--- a/test/barback/subdirectories_test.dart
+++ b/test/barback/subdirectories_test.dart
@@ -25,6 +25,8 @@ main() {
         ])
       ])
     ]).create();
+
+    pubGet();
   });
 
   var webOne = p.join("web", "one");
@@ -50,7 +52,7 @@ main() {
   });
 
   integration("serves subdirectories", () {
-    pubServe(args: [webOne, webTwoInner], shouldGetFirst: true);
+    pubServe(args: [webOne, webTwoInner]);
 
     requestShouldSucceed("inner/file.txt", "one", root: webOne);
     requestShouldSucceed("file.txt", "two", root: webTwoInner);