Error: Synchronous requests are not supported.

[cgewecke]

Seen at Neufund, when using the provider in truffle.js. . . the pattern looks like this:

    inprocess: {
      network_id: "*",
      provider: TestRPC.provider({
        accounts: Array(10).fill({ balance: "12300000000000000000000000" })
      })
    },

The errors then come from our use of sync web3 methods like web3.eth.getBlock('latest)

[cgewecke]

Finally discovered what this is about. . . testrpc must be run in a separate process to handle sync requests. Any tool that uses an in process provider forfeits the ability call web3 0.x sync methods.

[cgewecke]

Not that this isn't a problem, but not really a bug per se.