[loader-v2] Small cleanups & tests #70575

Job	Run time
rust-doc-tests	4m 48s
file_change_determinator	12s
rust-consensus-only-unit-test	0s
rust-unit-tests	0s
rust-consensus-only-smoke-test	0s
rust-cargo-deny	1m 50s
rust-lints	3m 37s
general-lints	25s
rust-smoke-tests	27m 42s
rust-check-merge-base	1m 5s
rust-cryptohasher-domain-separation-check	0s
rust-build-cached-packages	2m 5s
rust-targeted-unit-tests	18m 44s
	1h 0m 28s

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