loongarch64: Maps to linux-generic64 (#224) #437

Job	Run time
Rustfmt	12s
Test (x86_64-unknown-linux-gnu, stable, ubuntu-latest)	3m 27s
Test (x86_64-unknown-linux-gnu, beta, ubuntu-latest)	3m 4s
Test (x86_64-unknown-linux-gnu, nightly, ubuntu-latest)	3m 15s
Test (x86_64-apple-darwin, stable, macos-latest)	3m 43s
Test (aarch64-apple-darwin, nightly, macos-latest)	2m 59s
Test (i686-unknown-linux-gnu, stable, ubuntu-latest)	2m 9s
Test (arm-unknown-linux-gnueabi, stable, ubuntu-latest)	2m 25s
Test (aarch64-unknown-linux-gnu, stable, ubuntu-latest)	2m 9s
Test (x86_64-unknown-linux-musl, stable, ubuntu-latest)	2m 12s
Test (x86_64-pc-windows-gnu, stable, ubuntu-latest)	2m 40s
Test (i686-pc-windows-msvc, stable-i686-msvc, windows-2019)	8m 31s
Test (i686-pc-windows-msvc, stable-i686-msvc, windows-2019, yes)	8m 53s
Test (x86_64-pc-windows-msvc, stable-x86_64-msvc, windows-latest)	8m 35s
Test (x86_64-pc-windows-msvc, stable-x86_64-msvc, windows-latest, yes)	8m 48s
Test (x86_64-pc-windows-msvc, stable-x86_64-msvc, windows-latest, installed)	9m 36s
	1h 12m 38s

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