message: receipt-manager: jest exits instead of hanging
diff: @@ -17,6 +17,7 @@ import {
  import { Message as WireMessage } from '@statechannels/client-api-schema'
  import { seedAlicesSigningWallet } from '@statechannels/server-wallet/lib/src/db/seeds/1_signing_wallet_seeds'
  +import knex from '@statechannels/server-wallet/lib/src/db/connection'
  import { WalletKnex } from '@statechannels/server-wallet'
  import { ReceiptManager, PayerMessage } from '../receipt-manager'
  @@ -54,6 +55,7 @@ beforeEach(async () => {
  afterAll(async () => {
  await WalletKnex.destroy()
  + await knex.destroy()
  })
  describe('ReceiptManager', () => {
  