Closes #1143

Author: sebastianbergmann

ChangeLog-13.0.md

@@ -2,6 +2,12 @@
 
 All notable changes are documented in this file using the [Keep a CHANGELOG](http://keepachangelog.com/) principles.
 
+## [13.0.2] - 2026-MM-DD
+
+### Fixed
+
+* [#1143](https://github.com/sebastianbergmann/php-code-coverage/issues/1143): Race condition in `CachingSourceAnalyser::read()` with parallel test runners
+
 ## [13.0.1] - 2026-02-06
 
 ### Fixed
@@ -14,5 +20,6 @@ All notable changes are documented in this file using the [Keep a CHANGELOG](htt
 
 * This component is no longer supported on PHP 8.3
 
+[13.0.2]: https://github.com/sebastianbergmann/php-code-coverage/compare/13.0.1...13.0
 [13.0.1]: https://github.com/sebastianbergmann/php-code-coverage/compare/13.0.0...13.0.1
 [13.0.0]: https://github.com/sebastianbergmann/php-code-coverage/compare/12.5...13.0.0

src/StaticAnalysis/CachingSourceAnalyser.php

@@ -107,8 +107,14 @@ private function read(string $cacheFile): AnalysisResult|false
             return false;
         }
 
+        $data = file_get_contents($cacheFile);
+
+        if ($data === false) {
+            return false;
+        }
+
         return unserialize(
-            file_get_contents($cacheFile),
+            $data,
             [
                 'allowed_classes' => [
                     AnalysisResult::class,