To prepare for Rust toolchain uprev, ran `tools/clippy --fix` with
Rust 1.88 for each platform.
To build with the current Rust version 1.81, some changes with unstable
features were manually reverted.
BUG=b:455879436
TEST=CQ
Change-Id: I4a91460d4fc2de5d7afbc2da04b7f7765219bb2e
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/7089630
Reviewed-by: David Stevens <stevensd@chromium.org>
Commit-Queue: Keiichi Watanabe <keiichiw@chromium.org>