Merge pull request #30 from RalfJung/rustup #1070

Job	Run time
test-alloc	15m 8s
test-simd	37m 2s
test-core	21m 37s
test-std	27m 42s
test-stdarch	10m 7s
Success	1s
cronjob failure notification	0s
	1h 51m 37s

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