NET branch #1171

Job	Run time
build-minimal-sysroots (x86_64)	50s
build-minimal-sysroots (riscv64)	1m 19s
build-minimal-sysroots (arm64)	54s
build-toolchains (ubuntu-latest, x86_64, gnu)	31s
build-toolchains (ubuntu-latest, riscv64, gnu)	41s
build-toolchains (ubuntu-latest, arm64, gnu)	27s
build-toolchains (ubuntu-20.04, x86_64, gnu)	32s
build-toolchains (ubuntu-20.04, riscv64, gnu)	45s
build-toolchains (ubuntu-20.04, arm64, gnu)	33s
build-toolchains (ubuntu-latest, llvm, all)	1m 6s
build-llvm	1m 49s
build-riscv	3m 3s
build-llvm-riscv64	1m 23s
build	2m 53s
build-arm64	0s
build-llvm-arm64	0s
run-riscv	0s
run-riscv64-llvm	0s
run-x86_64	0s
run-x86_64-llvm	0s
	16m 46s

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