fix error handling

waggle-dance.py

@@ -96,7 +96,7 @@ async def delete_if_possible(channels):
     for c in channels:
         try:
             await c.delete()
-        except:
+        except discord.DiscordException:
             pass
 
 async def countdown(channel):
@@ -171,7 +171,7 @@ async def handle_guild_message(message):
             await message.channel.send("looks like I'm not allowed to create voice channels :(")
             await delete_if_possible(pollination_channels)
             return
-        except discord.HTTPException as e:
+        except discord.DiscordException as e:
             exception_count += 1
             if exception_count > 20:
                 await message.channel.send("I'm trying to create voice channels, but something's wrong: {}".format(e))
@@ -189,11 +189,11 @@ async def handle_guild_message(message):
         for ((a, b), c) in zip(matching, pollination_channels):
             try:
                 await a.move_to(c)
-            except e:
+            except discord.DiscordException as e:
                 print('failed to move participant {}: {}'.format(a, e), file=sys.stderr)
             try:
                 await b.move_to(c)
-            except e:
+            except discord.DiscordException as e:
                 print('failed to move participant {}: {}'.format(b, e), file=sys.stderr)
         await asyncio.sleep(60*3)
         await message.channel.send('Round ending in 2 minutes {}'.format(mention_all))
@@ -206,7 +206,7 @@ async def handle_guild_message(message):
     for u in participants:
         try:
             await u.move_to(main_voice_channel)
-        except e:
+        except discord.DiscordException as e:
             print('failed to move participant {}: {}'.format(u, e), file=sys.stderr)
 
     await delete_if_possible(pollination_channels)