Support dates prior to Unix Epoch on Linux #3763

Job	Run time
Check --no-default-features (nightly)	57s
Check nightly-only targets (nightly)	23s
Check (stable)	6m 12s
Check selected Tier 3 platforms (nightly)	3m 31s
Check (nightly)	6m 41s
Rustfmt	11s
Test rustix_use_experimental_asm (powerpc64le-linux)	1m 9s
Test use-libc (ubuntu)	37s
Check (1.63)	11m 27s
Test use-libc (i686-linux)	56s
Test (ubuntu)	43s
Test use-libc (aarch64-linux)	1m 3s
Test (ubuntu-20.04)	41s
Test use-libc (powerpc64le-linux)	1m 8s
Test (i686-linux)	57s
Test use-libc (riscv64-linux)	1m 1s
Test (aarch64-linux)	1m 5s
Test use-libc (arm-linux)	1m 0s
Test (powerpc64le-linux)	1m 5s
Test (riscv64-linux)	1m 6s
Test (s390x-linux)	1m 4s
Test (arm-linux)	1m 0s
Test (ubuntu-stable)	41s
Test (i686-linux-stable)	55s
Test (aarch64-linux-stable)	55s
Test (riscv64-linux-stable)	54s
Test (s390x-linux-stable)	1m 5s
Test (powerpc64le-linux-stable)	54s
Test (arm-linux-stable)	53s
Test (ubuntu-1.63)	2m 48s
Test (i686-linux-1.63)	3m 1s
Test (aarch64-linux-1.63)	2m 59s
Test (riscv64-linux-1.63)	3m 0s
Test (s390x-linux-1.63)	3m 8s
Test (powerpc64le-linux-1.63)	3m 5s
Test (arm-linux-1.63)	3m 21s
Test (macos-latest)	19m 21s
Test (macos-11)	1m 22s
Test (windows)	49s
Test (windows-2019)	53s
Test (musl)	37s
	1h 34m 38s

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