One failing rm should not block others

script/clean.py

@@ -11,14 +11,11 @@ SOURCE_ROOT = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
 
 def main():
   os.chdir(SOURCE_ROOT)
-  try:
-    rm_rf('node_modules')
-    rm_rf('dist')
-    rm_rf('out')
-    rm_rf('spec/node_modules')
-    rm_rf('vendor/brightray/vendor/download/libchromiumcontent')
-  except WindowsError:  # pylint: disable=E0602
-    pass
+  rm_rf('node_modules')
+  rm_rf('dist')
+  rm_rf('out')
+  rm_rf('spec/node_modules')
+  rm_rf('vendor/brightray/vendor/download/libchromiumcontent')
 
 
 if __name__ == '__main__':

script/lib/util.py

@@ -136,6 +136,8 @@ def rm_rf(path):
   except OSError as e:
     if e.errno != errno.ENOENT:
       raise
+  except WindowsError:  # pylint: disable=E0602
+    pass
 
 
 def safe_unlink(path):