Dev windows support part2 #545

Job	Run time
test (x86_64-unknown-linux-gnu, stable)	4m 43s
test (x86_64-unknown-linux-gnu, nightly)	4m 39s
test (i686-unknown-linux-gnu, stable)	2m 51s
test (i686-unknown-linux-gnu, nightly)	2m 43s
test (aarch64-unknown-linux-gnu, stable)	1m 23s
test (aarch64-unknown-linux-gnu, nightly)	1m 24s
test (armv7-unknown-linux-gnueabihf, stable)	1m 43s
test (armv7-unknown-linux-gnueabihf, nightly)	1m 43s
test (riscv64gc-unknown-linux-gnu, stable)	1m 18s
test (riscv64gc-unknown-linux-gnu, nightly)	1m 50s
test (s390x-unknown-linux-gnu, stable)	3m 56s
test (s390x-unknown-linux-gnu, nightly)	1m 38s
test (x86_64-apple-darwin, stable)	3m 16s
test (x86_64-apple-darwin, nightly)	5m 32s
test (aarch64-apple-darwin, stable)	2m 38s
test (aarch64-apple-darwin, nightly)	2m 53s
test (x86_64-pc-windows-gnu, stable)	1m 35s
test (x86_64-pc-windows-gnu, nightly)	1m 16s
test (x86_64-pc-windows-msvc, stable)	2m 1s
test (x86_64-pc-windows-msvc, nightly)	1m 12s
test (i686-pc-windows-gnu, stable)	1m 41s
test (i686-pc-windows-gnu, nightly)	1m 25s
test (i686-pc-windows-msvc, stable)	2m 8s
test (i686-pc-windows-msvc, nightly)	1m 14s
	56m 42s

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