Rust 1.56.1 adds a mitigation for CVE-2021-42574, the "trojan source" attack that obfuscates code with BiDi control characters. The compiler will now error on such characters in code comments and string/char literals. For more details, see the upstream security advisory.
Updates may require up to 24 hours to propagate to mirrors. If the following command doesn't work, please retry later:
sudo dnf upgrade --refresh --advisory=FEDORA-2021-443139f67c
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|Test Case rust compile