tests: fix "elided lifetime has a name" warnings #208

Job	Run time
cargo fmt --all -- --check	7s
cargo check (ubuntu-latest)	10s
cargo clippy -- -D warnings (ubuntu-latest)	10s
cargo check (macOS-latest)	13s
Code Coverage (ubuntu-latest, unix)	1m 44s
cargo clippy -- -D warnings (macOS-latest)	13s
cargo check (windows-latest)	1m 23s
cargo test (ubuntu-latest)	19s
Code Coverage (macos-latest, macos)	1m 35s
cargo clippy -- -D warnings (windows-latest)	2m 23s
cargo test (macOS-latest)	17s
Code Coverage (windows-latest, windows)	3m 46s
cargo test (windows-latest)	2m 3s
	14m 23s

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