removed features, bad OSs #64

Job	Run time
FreeBSD-x86_64 with rust stable	54s
Linux-x86_64 with rust stable	42s
Linux-aarch64 with rust stable	1m 0s
Linux-arm with rust stable	54s
Linux-i686 with rust stable	1m 5s
Linux-powerpc with rust stable	50s
Linux-powerpc64 with rust stable	51s
Linux-powerpc64le with rust stable	59s
Linux-riscv64 with rust stable	56s
Linux-s390x with rust stable	5m 42s
Windows-aarch64 with rust stable	5m 8s
Windows-i686 with rust stable	4m 23s
Windows-x86_64 with rust stable	3m 47s
macOS-x86_64 with rust stable	42s
macOS-aarch64 with rust stable	35s
Linux-x86_64 with rust beta	36s
Linux-x86_64 with rust nightly	37s
	29m 41s

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