Bugfixes

* Fixed a bug where the lockfile would be released on exit even if
  it wasn't locked by the process
* Disabled the phpx build as it is broken

src/State/Lockfile.php

@@ -8,6 +8,8 @@ class Lockfile
 
     private int $maxLock = 3600;
 
+    private bool $locked = false;
+
     public function __construct(string $filename)
     {
         $this->filename = $filename;
@@ -22,15 +24,16 @@ class Lockfile
             }
         }
         touch($this->filename);
+        $this->locked = true;
     }
 
     public function release()
     {
-        if (file_exists($this->filename)) {
+        if ($this->locked && file_exists($this->filename)) {
             unlink($this->filename);
         }
-
+        $this->locked = false;
     }
 
 
-}
+}