Improve weight checker #764

Job	Run time
Task check format	27s
Task check features (runtime/darwinia)	2m 51s
Task check features (runtime/crab)	1m 30s
Task check features (runtime/pangoro)	1m 46s
Task check features (runtime/pangolin)	2m 0s
Task build darwinia	36m 6s
Task test darwinia	47m 30s
Task check EVM	4m 41s
Task check runtimes (darwinia-dev, https://rpc.darwinia-network)	57s
Task check runtimes (crab-dev, https://crab-rpc.darwinia-network)	1m 0s
Task check runtimes (pangoro-dev, https://pangoro-rpc.darwinia.network)	58s
Task check runtimes (pangolin-dev, https://pangolin-rpc.darwinia.network)	1m 7s
Task checks cleaning	2s
	1h 40m 55s

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