posix

Merge pull request #121 from mattip/upload5 #70

Job	Run time
build (ubuntu-latest, i686, 0, 2014)	16m 55s
build (ubuntu-latest, x86_64, 0, 2014)	23m 55s
build (ubuntu-latest, x86_64, 1, 2014)	27m 11s
build (macos-11, x86_64, 0, 2014)	32m 21s
build (macos-11, x86_64, 1, 2014)	33m 18s
build (macos-11, arm64, 1)	22m 16s
build (macos-11, arm64, 0)	23m 52s
build (ubuntu-latest, x86_64, 1, _1_1, musllinux)	19m 58s
build (ubuntu-latest, x86_64, 0, _1_1, musllinux)	20m 19s
	3h 40m 5s

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