Migrate to cargo_embargo. am: 15111750e5 am: 2e96eb30c2

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/kernlog/+/2822242

Change-Id: I0b5e05d92fa2528db025367aa3ca15b90a026c40
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>