submit all op before uring drop #576

Job	Run time
test (x86_64-unknown-linux-gnu, stable)	4m 41s
test (x86_64-unknown-linux-gnu, nightly)	4m 45s
test (i686-unknown-linux-gnu, stable)	2m 27s
test (i686-unknown-linux-gnu, nightly)	2m 24s
test (aarch64-unknown-linux-gnu, stable)	2m 57s
test (aarch64-unknown-linux-gnu, nightly)	2m 48s
test (armv7-unknown-linux-gnueabihf, stable)	1m 39s
test (armv7-unknown-linux-gnueabihf, nightly)	1m 39s
test (riscv64gc-unknown-linux-gnu, stable)	1m 24s
test (riscv64gc-unknown-linux-gnu, nightly)	1m 47s
test (s390x-unknown-linux-gnu, stable)	2m 4s
test (s390x-unknown-linux-gnu, nightly)	1m 42s
test (x86_64-apple-darwin, stable)	4m 43s
test (x86_64-apple-darwin, nightly)	3m 39s
test (aarch64-apple-darwin, stable)	2m 39s
test (aarch64-apple-darwin, nightly)	2m 39s
test (x86_64-pc-windows-gnu, stable)	1m 40s
test (x86_64-pc-windows-gnu, nightly)	58s
test (x86_64-pc-windows-msvc, stable)	54s
test (x86_64-pc-windows-msvc, nightly)	1m 14s
test (i686-pc-windows-gnu, stable)	1m 14s
test (i686-pc-windows-gnu, nightly)	1m 1s
test (i686-pc-windows-msvc, stable)	1m 23s
test (i686-pc-windows-msvc, nightly)	1m 10s
	53m 31s

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