All worker processes are killed on shutdown.

BUGS

@@ -1,5 +1,4 @@
 Current
-- The worker processes are left over after vigil stops. (In sandbox or not)
 - The brightness of the summary's title slightly changes when focused.
 - When paging the summary window, with the bottom scroll bar showing, the
   cursor line drifts up or down a row.
@@ -241,6 +240,8 @@ Fixed
 - sandbox_fs_test.py is failing when run by the vigil that was started in
   my startup script, but passing otherwise.
   <- sandbox_fs_test.py is totally different now.
+- The worker processes are left over after vigil stops. (In sandbox or not)
+
 
 Won't fix
 - If the summary window is narrower then max_path_length the paths are never

vigil

@@ -570,6 +570,7 @@ class Screen:
             worker_.future.cancel()
             if worker_.result is not None:
                 worker_.result.reset()
+            worker_.kill()
 
     def _partition(self, widgets, height):
         smaller_height = max(height // 4, 10)

worker.py

@@ -75,6 +75,10 @@ class Worker:
             self.result.set_status(tools.Status.running)
             os.killpg(self.child_pgid, signal.SIGCONT)
 
+    def kill(self):
+        if self.child_pgid is not None:
+            os.killpg(self.child_pgid, signal.SIGKILL)
+
 
 def main():
     print(os.getpgid(os.getpid()), flush=True)