diff --git a/src/lint/engine/ArcanistLintEngine.php b/src/lint/engine/ArcanistLintEngine.php
--- a/src/lint/engine/ArcanistLintEngine.php
+++ b/src/lint/engine/ArcanistLintEngine.php
@@ -417,7 +417,7 @@
     return $this->stopped;
   }
 
-  abstract protected function buildLinters();
+  abstract public function buildLinters();
 
   final protected function didRunLinters(array $linters) {
     assert_instances_of($linters, 'ArcanistLinter');
diff --git a/src/lint/engine/UnitTestableArcanistLintEngine.php b/src/lint/engine/UnitTestableArcanistLintEngine.php
--- a/src/lint/engine/UnitTestableArcanistLintEngine.php
+++ b/src/lint/engine/UnitTestableArcanistLintEngine.php
@@ -25,7 +25,7 @@
     return parent::pathExists($path);
   }
 
-  protected function buildLinters() {
+  public function buildLinters() {
     return $this->linters;
   }