message: Track TargetKind::Example split
diff: @@ -85,7 +85,8 @@ fn add_deps_for_unit(deps: &mut HashSet<PathBuf>, context: &mut Context, unit: &
  TargetKind::Lib(..) => "lib",
  TargetKind::Bin => "bin",
  TargetKind::Test => "integration-test",
  - TargetKind::Example => "example",
  + TargetKind::ExampleBin |
  + TargetKind::ExampleLib(..) => "example",
  TargetKind::Bench => "bench",
  TargetKind::CustomBuild => "build-script",
  };
  