Benchmarking tool using cost estimator (#235) #817

Job	Run time
Build target wasm32-unknown-unknown	1m 51s
Bitrot check	2m 40s
Build target wasm32-wasi	1m 51s
Intra-doc links	1m 43s
Rustfmt	11s
Test on ubuntu-latest with basic features	3m 44s
Test on windows-latest with basic features	5m 36s
Test on macOS-latest with basic features	8m 25s
Test on ubuntu-latest with all features	4m 31s
Test on windows-latest with all features	6m 37s
Test on macOS-latest with all features	6m 15s
	43m 24s

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