`postgresderive` was removed from crates.io for malicious code

This crate was part of a typosquatting malware cluster published by the
malicious user `amaperf` and contained a malware payload in `build.rs` to
exfiltrate host information to the attacker.

This advisory is to retrospectively document this attempted attack. The version
information and download records of the malicious crate are no longer
available. The related malicious crates have been yanked, and the malicious
account has been banned.

Thanks to Louis Lang at [Phylum] (now [Veracode]) for reporting this malware
campaign.

[Phylum]: https://phylum.io/
[Veracode]: https://www.veracode.com/