diff --git a/src/configuration/ArcanistConfigurationManager.php b/src/configuration/ArcanistConfigurationManager.php
--- a/src/configuration/ArcanistConfigurationManager.php
+++ b/src/configuration/ArcanistConfigurationManager.php
@@ -13,6 +13,7 @@
   public function setWorkingCopyIdentity(
     ArcanistWorkingCopyIdentity $working_copy) {
     $this->workingCopy = $working_copy;
+    return $this;
   }
 
 /* -(  Get config  )--------------------------------------------------------- */
@@ -243,6 +244,7 @@
 
     $this->customArcrcFilename = $custom_arcrc;
     $this->userConfigCache = null;
+    return $this;
   }
 
   public function getUserConfigurationFileLocation() {
diff --git a/src/lint/linter/xhpast/ArcanistXHPASTLinterRule.php b/src/lint/linter/xhpast/ArcanistXHPASTLinterRule.php
--- a/src/lint/linter/xhpast/ArcanistXHPASTLinterRule.php
+++ b/src/lint/linter/xhpast/ArcanistXHPASTLinterRule.php
@@ -69,6 +69,7 @@
 
   final public function setLinter(ArcanistXHPASTLinter $linter) {
     $this->linter = $linter;
+    return $this;
   }
 
   /**
diff --git a/src/unit/engine/NoseTestEngine.php b/src/unit/engine/NoseTestEngine.php
--- a/src/unit/engine/NoseTestEngine.php
+++ b/src/unit/engine/NoseTestEngine.php
@@ -64,7 +64,7 @@
     foreach ($futures as $test_path => $future) {
       try {
         list($stdout, $stderr) = $future->resolvex();
-      } catch(CommandException $exc) {
+      } catch (CommandException $exc) {
         if ($exc->getError() > 1) {
           // 'nose' returns 1 when tests are failing/broken.
           throw $exc;
diff --git a/src/unit/engine/XUnitTestEngine.php b/src/unit/engine/XUnitTestEngine.php
--- a/src/unit/engine/XUnitTestEngine.php
+++ b/src/unit/engine/XUnitTestEngine.php
@@ -250,7 +250,7 @@
     try {
       $regenerate_future->resolvex();
       $result->setResult(ArcanistUnitTestResult::RESULT_PASS);
-    } catch(CommandException $exc) {
+    } catch (CommandException $exc) {
       if ($exc->getError() > 1) {
         throw $exc;
       }
@@ -296,7 +296,7 @@
       try {
         $future->resolvex();
         $result->setResult(ArcanistUnitTestResult::RESULT_PASS);
-      } catch(CommandException $exc) {
+      } catch (CommandException $exc) {
         if ($exc->getError() > 1) {
           throw $exc;
         }