add note that full source build with ROS 2 rolling could occasionally… (#883)

* add note that full source build with ROS 2 rolling could occasionally fail.

Signed-off-by: Tomoya Fujita <Tomoya.Fujita@sony.com>

* Update development_guides/build_docs/index.rst

Signed-off-by: Steve Macenski <stevenmacenski@gmail.com>

---------

Signed-off-by: Tomoya Fujita <Tomoya.Fujita@sony.com>
Signed-off-by: Steve Macenski <stevenmacenski@gmail.com>
Co-authored-by: Steve Macenski <stevenmacenski@gmail.com>

Author: fujitatomoya

development_guides/build_docs/index.rst

@@ -113,6 +113,10 @@ Once your environment is setup, clone the repo and build the workspace:
   colcon build \
     --symlink-install
 
+.. note::
+  Since rolling development source tracks the latest upstream ROS 2 branches, builds may occasionally fail due to ABI/API breaking changes being actively developed in ROS 2 core packages.
+  If you encounter build failures, consider using the :ref:`Released Distribution Binaries <build-instructions>` approach instead or submit the patch to Nav2.
+
 You can then ``source ~/nav2_ws/install/setup.bash`` to get ready for demonstrations! It is safe
 to ignore the rosdep error of from the missing ``slam_toolbox`` key.