Deduplicating query parameters. #1147

Job	Run time
rustfmt	35s
test (stable)	47s
test (beta)	54s
test (nightly)	56s
test (nightly-musl)	2m 28s
test (nightly-mips)	4m 28s
test (nightly-32)	2m 28s
test (macos)	1m 49s
test (win-msvc)	2m 1s
test (win-gnu)	3m 35s
test (msrv)	4m 15s
test (wasm32, ubuntu-latest, nightly)	2m 19s
	26m 35s

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