Fix Nightly warnings #647

Job	Run time
build (1.60.0, armv7a-none-eabi)	1m 35s
build (1.60.0, thumbv7em-none-eabi)	1m 25s
x86 (x86_64-unknown-linux-gnu, 1.72.0)	24s
build (1.60.0, wasm32-unknown-unknown)	1m 24s
test (i686-unknown-linux-gnu, ubuntu-latest, 1.60.0, sudo apt update && sudo apt install gcc-mult...	1m 45s
x86 (x86_64-unknown-linux-gnu, stable)	40s
build (stable, armv7a-none-eabi)	8s
build (stable, thumbv7em-none-eabi)	11s
cross (aarch64-unknown-linux-gnu, 1.60.0)	1m 53s
test (i686-unknown-linux-gnu, ubuntu-latest, stable, sudo apt update && sudo apt install gcc-mult...	48s
build (stable, wasm32-unknown-unknown)	21s
cross (aarch64-unknown-linux-gnu, stable)	46s
test (x86_64-unknown-linux-gnu, ubuntu-latest, 1.60.0)	1m 43s
cross (powerpc-unknown-linux-gnu, 1.60.0)	1m 49s
test (x86_64-unknown-linux-gnu, ubuntu-latest, stable)	17s
test (x86_64-apple-darwin, macos-latest, 1.60.0)	1m 27s
cross (powerpc-unknown-linux-gnu, stable)	54s
test (x86_64-apple-darwin, macos-latest, stable)	21s
test (x86_64-pc-windows-msvc, windows-latest, 1.60.0)	46s
test (x86_64-pc-windows-msvc, windows-latest, stable)	37s
minimal-versions / minimal-versions	49s
	20m 3s

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