Migrate to cargo_embargo. am: caf5fb6a44 am: 8427f73c71 am: f92c43c0a7

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/nom/+/2796354

Change-Id: I3b5404a6ddcdfc2402c9f1598c75854642f0ccf0
Signed-off-by: Automerger Merge Worker <[email protected]>