Update README.md #615

Job	Run time
rustfmt	11s
test (1.70.0, x86_64-pc-windows-msvc, windows-2019)	3m 17s
test (1.70.0, x86_64-pc-windows-gnu, windows-2019, -x86_64-pc-windows-gnu)	3m 18s
test (1.70.0, x86_64-unknown-linux-gnu, ubuntu-latest)	3m 23s
test (1.70.0, x86_64-apple-darwin, macos-latest)	3m 24s
test (stable, x86_64-pc-windows-msvc, windows-2019)	1s
test (stable, x86_64-pc-windows-gnu, windows-2019, -x86_64-pc-windows-gnu)	1s
test (stable, x86_64-unknown-linux-gnu, ubuntu-latest)	1s
test (stable, x86_64-apple-darwin, macos-latest)	1s
test (beta, x86_64-pc-windows-msvc, windows-2019)	1m 10s
test (beta, x86_64-pc-windows-gnu, windows-2019, -x86_64-pc-windows-gnu)	3m 1s
test (beta, x86_64-unknown-linux-gnu, ubuntu-latest)	1s
test (beta, x86_64-apple-darwin, macos-latest)	8s
test (nightly, x86_64-pc-windows-msvc, windows-2019)	1s
test (nightly, x86_64-pc-windows-gnu, windows-2019, -x86_64-pc-windows-gnu)	1s
test (nightly, x86_64-unknown-linux-gnu, ubuntu-latest)	1s
test (nightly, x86_64-apple-darwin, macos-latest)	1s
	18m 1s

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