Merge pull request #5 from Kobzol/patch-2

Mention rust-lang-ci/rust being unused

Author: marcoieni

README.md

@@ -1,3 +1,6 @@
+> [!NOTE]
+> This forked repository was historically used to run CI for the Rust compiler. Since May 2025, all CI has been migrated to the [rust-lang/rust](https://github.com/rust-lang/rust) repository, and this fork is thus no longer used for anything.
+
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