Prepare for merging from rust-lang/rust

The rustc-josh-sync Cronjob Bot · The rustc-josh-sync Cronjob Bot · commit 4f96b2aa5e33 · 2025-08-07T04:18:12.000Z
This updates the rust-version file to 6bcdcc7.
diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version
@@ -1 +1 @@
-383b9c447b61641e1f1a3850253944a897a60827
+6bcdcc73bd11568fd85f5a38b58e1eda054ad1cd
