The systemic security problems of cargo package distribution opens the door for state-sponsored threat actors to performing supply chain attacks. And when asked about these issues the only people who will comment using their real identities are based in China.
The security issues in the rust development experience are well-documented since several years, so my summary at [1] was no news to them.
But if you offer things like rustfmt, rustdoc, and a nice-to-use package distribution platform like cargo.io you should be a bit more concered with security imo.
Their lax attitude to these issues and substantial corporate interests not only from US-based but also China-based companies might be good for funding but for me raises many questions.