Adding deprecation notices to these backends and suggesting the SlackV3 one.
In the logs, the message looks like
00:03:28 INFO errbot webhooks: Flag to bind /github to notification
00:03:28 INFO errbot webhooks: Flag to bind /test to test
00:03:28 WARNING errbot.backends.slack This backend is deprecated and will be removed in a future release. No future updates, bug fixes or enhancements will be included. We strongly advise migrating to SlackV3, which is available at https://github.com/errbotio/err-backend-slackv3
00:03:28 INFO errbot.backends.slack Verifying authentication token
00:03:28 INFO errbot.backends.slack Connecting to Slack real-time-messaging API
00:03:29 INFO errbot.backends.slack Connected
Adding deprecation notices to these backends and suggesting the SlackV3 one.
In the logs, the message looks like