Verification: schedule member update task

Turns out that it's necessary to cancel the task manually. Otherwise,
duplicate tasks can be running concurrently should the extension
be reloaded.

1 files changed, 12 insertions, 1 deletions

diff --git a/bot/cogs/verification.py b/bot/cogs/verification.py
index 951736761..0534e8d1e 100644
--- a/bot/cogs/verification.py
+++ b/bot/cogs/verification.py
@@ -57,9 +57,20 @@ BOT_MESSAGE_DELETE_DELAY = 10
 class Verification(Cog):
     """User verification and role self-management."""
 
-    def __init__(self, bot: Bot):
+    def __init__(self, bot: Bot) -> None:
+        """Start `update_unverified_members` task."""
         self.bot = bot
 
+        self.update_unverified_members.start()
+
+    def cog_unload(self) -> None:
+        """
+        Kill `update_unverified_members` task.
+
+        This is necessary, the task is not automatically cancelled on cog unload.
+        """
+        self.update_unverified_members.cancel()
+
     @property
     def mod_log(self) -> ModLog:
         """Get currently loaded ModLog cog instance."""