Run cron's tests when cache is avaiable #708

Job	Run time
Docs (Detect cases where documentation links don't resolve and such)	18s
test (i686-pc-windows-msvc (stable), windows-2019, stable, i686-pc-windows-msvc, x86)	14m 23s
test (x86_64-pc-windows-msvc (stable), windows-2019, stable, x86_64-pc-windows-msvc, x64)	13m 59s
test (x86_64-pc-windows-msvc (beta), windows-2019, beta, x86_64-pc-windows-msvc, x64)	14m 2s
test (x86_64-unknown-linux-gnu (stable), ubuntu-20.04, stable, x86_64-unknown-linux-gnu)	8m 26s
test (x86_64-unknown-linux-gnu (beta), ubuntu-20.04, beta, x86_64-unknown-linux-gnu)	8m 4s
test (x86_64-apple-darwin (stable), macos-13, stable, x86_64-apple-darwin)	12m 11s
test (x86_64-apple-darwin (beta), macos-13, beta, x86_64-apple-darwin)	11m 30s
	1h 22m 53s

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