Merge "Update source for Rust 1.78.0" into main am: 7ca1ab530a am: d8e1d58ea1

Original change: https://android-review.googlesource.com/c/platform/development/+/3080616

Change-Id: Ia2f9455e6f3a1ee7cb1e491f12b0fba03e89c98d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>