From 874c2cd3c9ed47fa42eea184b167b8c0c64ea18e Mon Sep 17 00:00:00 2001
From: Rapptz <rapptz@gmail.com>
Date: Mon, 6 Apr 2020 21:45:16 -0400
Subject: [PATCH] [commands] Raise CheckFailure if all bot "check once" fail

Fix #2643
---
 discord/ext/commands/bot.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/discord/ext/commands/bot.py b/discord/ext/commands/bot.py
index 9280136df..8485c4aba 100644
--- a/discord/ext/commands/bot.py
+++ b/discord/ext/commands/bot.py
@@ -890,6 +890,8 @@ class BotBase(GroupMixin):
             try:
                 if await self.can_run(ctx, call_once=True):
                     await ctx.command.invoke(ctx)
+                else:
+                    raise errors.CheckFailure('The global check once functions failed.')
             except errors.CommandError as exc:
                 await ctx.command.dispatch_error(ctx, exc)
             else: