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

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

Change-Id: I5922326205215fe6b9df2017a90478086071ede1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>