Operation parameter is no longer used.

jaraco · jaraco · commit f4ed2f73aeb7 · 2019-11-04T20:56:21.000-06:00
diff --git a/pytest_services/xvfb.py b/pytest_services/xvfb.py
@@ -71,7 +71,7 @@ def xvfb(request, run_services, xvfb_display, lock_dir, xvfb_resolution, watcher
         listen_args = []
 
     with file_lock(os.path.join(lock_dir, 'xvfb_{0}.lock'.format(xvfb_display)),
-                   operation=fcntl.LOCK_EX | fcntl.LOCK_NB):
+                   ):
 
         def checker():
             try:
