Tutorial http://docs.ros.org/en/humble/Tutorials/Beginner-Client-Libraries/Creating-A-Workspace/Creating-A-Workspace.html lead to unexplained warning

[peci1]

Calling colcon build in the workspace of http://docs.ros.org/en/humble/Tutorials/Beginner-Client-Libraries/Creating-A-Workspace/Creating-A-Workspace.html tutorial shows this:

$ colcon build
[0.680s] WARNING:colcon.colcon_core.package_selection:Some selected packages are already built in one or more underlay workspaces:
        'turtlesim' is in: /opt/ros/humble
If a package in a merged underlay workspace is overridden and it installs headers, then all packages in the overlay must sort their include directories by workspace order. Failure to do so may result in build failures or undefined behavior at run time.
If the overridden package is used by another package in any underlay, then the overriding package in the overlay must be API and ABI compatible or undefined behavior at run time may occur.

If you understand the risks and want to override a package anyways, add the following to the command line:
        --allow-overriding turtlesim

This may be promoted to an error in a future release of colcon-override-check.
Starting >>> turtlesim
Finished <<< turtlesim [25.5s]

Summary: 1 package finished [25.8s]

Such a horribly looking warning should be explained in the tutorial.

If you understand the risks

Newbies usually don't understand too much. This is where I think the warning gets horrible for them.