Revert "https://github.com/google/pytype/issues/133 is fixed so don't have to run under parallel."
Revert "https://github.com/google/pytype/issues/133 is fixed so don't have to run under parallel."

This reverts commit 27f93731f37e9c993afd53cccc2867b06f7bf69f.

trentindav/faucet,gizmoguy/faucet,faucetsdn/faucet,anarkiwi/faucet,mwutzke/faucet,trentindav/faucet,trungdtbk/faucet,anarkiwi/faucet,mwutzke/faucet,trungdtbk/faucet,faucetsdn/faucet,shivarammysore/faucet,REANNZ/faucet,shivarammysore/faucet,REANNZ/faucet,gizmoguy/faucet