Fixes for use in the standard library #1858

Job	Run time
Check Style	16s
Build Documentation	1m 21s
Automatic intrinsic verification	41s
Build std_detect	1m 42s
Env Override	18s
Test (i686-unknown-linux-gnu)	2m 9s
Test (x86_64-unknown-linux-gnu)	6m 39s
Test (x86_64-unknown-linux-gnu-emulated)	12m 14s
Test (arm-unknown-linux-gnueabihf)	2m 23s
Test (armv7-unknown-linux-gnueabihf)	11m 9s
Test (aarch64-unknown-linux-gnu)	31m 40s
Test (riscv64gc-unknown-linux-gnu)	2m 29s
Test (powerpc64le-unknown-linux-gnu)	6m 23s
Test (s390x-unknown-linux-gnu)	3m 33s
Test (wasm32-wasi)	3m 21s
Test (i586-unknown-linux-gnu)	3m 12s
Test (nvptx64-nvidia-cuda)	41s
Test (thumbv6m-none-eabi)	17s
Test (thumbv7m-none-eabi)	18s
Test (thumbv7em-none-eabi)	18s
Test (thumbv7em-none-eabihf)	17s
Test (aarch64-apple-darwin)	2m 12s
Test (x86_64-pc-windows-msvc)	9m 8s
Test (i686-pc-windows-msvc)	4m 46s
Test (x86_64-apple-darwin, macos-11)	7m 14s
	1h 54m 41s

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