dbl

ctutils: additional clippy lints (#1384) #2150

Job	Run time
test (stable)	8s
test (1.85.0)	18s
build (stable, thumbv7em-none-eabi)	25s
build (1.85.0, thumbv7em-none-eabi)	15s
build (stable, wasm32-unknown-unknown)	11s
minimal-versions / minimal-versions	18s
build (1.85.0, wasm32-unknown-unknown)	17s
	1m 52s

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