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This is a cross-post of the official security advisory The official post contains a signed version with our PGP key, as well. The Rust team was recently notified of a security vulnerability affecting manual implementations of Error::type_id and their interaction with the Error::downcast family of functions in the standard library. If your code does not manually implement Error::type_id your code is not affected. We are applying for a CVE for this vulnerability, but since there is no embargo, we...