Fail to get the connection with the features ["postgres", "bb8"] about diesel_async HOT 4 CLOSED

I've tried your minimal example locally and the tests passes for my setup. Additionally this issue indicates that this error also might be returned if your connection URL is somehow invalid. I agree that this error message is not optimal, but that's an issue in bb8 then.

Closed that I'm not able to reproduce the issue locally with a valid database URL.

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Thank you for your reply. I don't think it's a URL issue. I have provided a repo to reproduce the issue.

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I've checked your repo and I cannot reproduce the issue with that either. Both tests complete successful for me. Again I believe that this is just an issue with your database URL. Please note that diesel::PgConnection and diesel_async::AsyncPgConnection do not necessarily support the same database URL params/format. They are completely different implementations that support a different set of parameters. Just because a database URL works with one of the implementations it does not necessarily mean that it will work with the other implementation as well. Checkout the documentation of both types to learn about the required format.

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Once I change my url format to the postgres://${whoami}@localhost/signatures, the test passed.
The connection URLs should be in the form postgres://[user[:password]@]host/database_name
Thanks again.

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