Function test_rapid_sequence 

pub(crate) async fn test_rapid_sequence(
    grpc: &mut DydxGrpcClient,
    account: &mut Account,
    http: &DydxHttpClient,
    _raw_http: &DydxRawHttpClient,
    address: &str,
    is_mainnet: bool,
) -> Result<(), Box<dyn Error>>