test  2020-04-17T14:09:31.865000Z TestFramework (ERROR): 
  Called Process failed with 'error: Could not locate RPC credentials. No authentication cookie could be found, and RPC password is not set.  See -rpcpassword and -stdinrpcpass.  Configuration file: (/home/travis/build/bitcoin/bitcoin/ci/scratch/test_runner/test_runner_₿_🏃_20200417_132645/interface_bitcoin_cli_109/node0/bitcoin.conf)