PostgreSQL authentication method 10 not supported

You have to upgrade the PostgreSQL client software (in this case, the libpq used by the Rust driver) to a later version that supports the scram-sha-256 authentication method introduced in PostgreSQL v10.

Downgrading password_encryption in PostgreSQL to md5, changing all the passwords and using the md5 authentication method is a possible, but bad alternative. It is more effort, and you get worse security and old, buggy software.

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