Backport patches to 0.36 #3438

Job	Run time
Rustfmt	17s
Check --no-default-features (nightly)	16s
Check nightly-only targets (nightly)	31s
Check (stable)	4m 19s
Check selected Tier 3 platforms (nightly)	4m 25s
Check (nightly)	3m 59s
Test (ubuntu)	50s
Check (1.48)	10m 19s
Test (ubuntu-20.04)	46s
Test (i686-linux)	1m 0s
Test use-libc (ubuntu)	41s
Test rustix_use_experimental_asm (powerpc64le-linux)	3m 35s
Test (aarch64-linux)	59s
Test use-libc (i686-linux)	1m 6s
Test (powerpc64le-linux)	1m 0s
Test use-libc (aarch64-linux)	3m 14s
Test (riscv64-linux)	1m 3s
Test use-libc (powerpc64le-linux)	3m 13s
Test (s390x-linux)	59s
Test use-libc (riscv64-linux)	2m 48s
Test (arm-linux)	1m 3s
Test use-libc (arm-linux)	2m 56s
Test (ubuntu-stable)	46s
Test (ubuntu-1.48)	1m 2s
Test (i686-linux-stable)	52s
Test (aarch64-linux-stable)	1m 2s
Test (riscv64-linux-stable)	1m 3s
Test (s390x-linux-stable)	1m 0s
Test (powerpc64le-linux-stable)	59s
Test (arm-linux-stable)	1m 4s
Test (ubuntu-1.48)	59s
Test (i686-linux-1.48)	1m 1s
Test (aarch64-linux-1.48)	1m 3s
Test (riscv64-linux-1.48)	57s
Test (s390x-linux-1.48)	1m 0s
Test (powerpc64le-linux-1.48)	59s
Test (arm-linux-1.48)	1m 0s
Test (macos-latest)	59s
Test (macos-11)	42s
Test (windows)	49s
Test (windows-2019)	48s
	1h 7m 24s

Provide feedback