Try to fix ci #247

Job	Run time
clippy (ubuntu-latest)	47s
documentation (ubuntu-latest)	1m 43s
cross (beta, aarch64-unknown-linux-gnu)	2m 3s
clippy (windows-latest)	49s
documentation (windows-latest)	3m 38s
cross (beta, armv7-unknown-linux-gnueabihf)	2m 1s
examples (beta, run-app)	52s
examples (beta, run-app-with-args)	1m 0s
examples (beta, call-managed-function)	50s
fmt (ubuntu-latest)	11s
fmt (windows-latest)	30s
test (beta, x86_64-unknown-linux-gnu, 6.0)	2m 41s
examples (beta, passing-parameters)	58s
test (beta, x86_64-unknown-linux-gnu, 7.0)	2m 41s
examples (beta, return-string-from-managed)	1m 30s
test (beta, x86_64-unknown-linux-gnu, 8.0)	2m 41s
test (beta, x86_64-pc-windows-msvc, 6.0)	5m 24s
test (beta, x86_64-pc-windows-msvc, 7.0)	5m 21s
test (beta, x86_64-pc-windows-msvc, 8.0)	6m 5s
test (beta, i686-pc-windows-msvc, 6.0)	5m 55s
test (beta, i686-pc-windows-msvc, 7.0)	5m 52s
test (beta, i686-pc-windows-msvc, 8.0)	5m 38s
test (beta, x86_64-apple-darwin, 6.0)	3m 47s
test (beta, x86_64-apple-darwin, 7.0)	8m 44s
test (beta, x86_64-apple-darwin, 8.0)	8m 13s
	1h 19m 54s

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