message: Fix rustfmt not passing on travis
diff: @@ -254,6 +254,7 @@ fn bench_densities() -> Result<(), Box<dyn std::error::Error>> {
  // bench eigen
  #[cfg(feature = "eigen")]
  + {
  if !spec.forbid_eigen {
  let now = std::time::Instant::now();
  let _nnz = eigen_prod(m1.view(), m2.view());
  @@ -265,6 +266,7 @@ fn bench_densities() -> Result<(), Box<dyn std::error::Error>> {
  times_eigen.push(elapsed);
  }
  }
  + }
  println!("Results for shape: ({}, {})", shape.0, shape.1);
  println!("Product nnzs: {:?}", nnzs);
  println!("Product densities: {:?}", res_densities);
  @@ -369,6 +371,7 @@ fn bench_densities() -> Result<(), Box<dyn std::error::Error>> {
  });
  #[cfg(feature = "eigen")]
  + {
  if !spec.forbid_eigen {
  chart
  .draw_series(LineSeries::new(
  @@ -383,6 +386,7 @@ fn bench_densities() -> Result<(), Box<dyn std::error::Error>> {
  PathElement::new(vec![(x, y), (x + 20, y)], &CYAN)
  });
  }
  + }
  chart
  .configure_series_labels()
  