core/modules/system/src/Tests/Module/InstallUninstallTest.php | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/core/modules/system/src/Tests/Module/InstallUninstallTest.php b/core/modules/system/src/Tests/Module/InstallUninstallTest.php
index cfaa7e4..c5ae5fb 100644
--- a/core/modules/system/src/Tests/Module/InstallUninstallTest.php
+++ b/core/modules/system/src/Tests/Module/InstallUninstallTest.php
@@ -25,6 +25,8 @@ class InstallUninstallTest extends ModuleTestBase {
    * Tests that a fixed set of modules can be installed and uninstalled.
    */
   public function testInstallUninstall() {
+    $this->dumpHeaders = TRUE;
+
     // Set a variable so that the hook implementations in system_test.module
     // will display messages via drupal_set_message().
     $this->container->get('state')->set('system_test.verbose_module_hooks', TRUE);
@@ -78,6 +80,9 @@ public function testInstallUninstall() {
     // Go through each module in the list and try to install and uninstall
     // it with its dependencies.
     while (list($name, $module) = each($all_modules)) {
+      if ($name !== 'big_pipe') {
+        continue;
+      }
       $was_installed_list = \Drupal::moduleHandler()->getModuleList();
 
       // Start a list of modules that we expect to be installed this time.