Rust

fix clippy #3763

Job	Run time
Cargo fmt	25s
Cargo fmt	25s
Cargo check	11m 46s
Cargo check	11m 46s
Cargo clippy	5m 48s
Cargo clippy	5m 48s
Check documentation and run doc tests	9m 16s
Check documentation and run doc tests	9m 16s
Test (Light Client)	45m 0s
Test (Light Client)	44m 59s
Check unused dependencies	1m 21s
Check unused dependencies	1m 21s
Test (Native)	10m 42s
Test (Native)	10m 42s
Cargo check (WASM)	1m 35s
Cargo check (WASM)	1m 35s
Test (Unstable Backend)	11m 36s
Test (Unstable Backend)	11m 36s
Test (WASM)	8m 33s
Test (WASM)	8m 33s
	3h 32m 3s

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