Bug report

I'm running the action examples, and the action_client_not_composable example always throws an exception.

Required Info:

• Operating System:
  • Ubuntu 18.04
• Installation type:
  • Source
• Version or commit hash:
  • 1129fe8
• DDS implementation:
  • Fast-RTPS
• Client library (if applicable):
  • rclcpp

Steps to reproduce issue

Terminal 1:

ros2 run examples_rclcpp_minimal_action_server action_server_member_functions

Terminal 2:

ros2 run examples_rclcpp_minimal_action_client action_client_not_composable

Expected behavior

Action client runs, gets feedback, and eventually gets the finished result.

Actual behavior

[INFO] [minimal_action_client]: Sending goal
terminate called after throwing an instance of 'rclcpp_action::exceptions::UnawareGoalHandleError'
  what():  Goal handle is not tracking the goal result.

Additional information

This happens regardless of which action server is used.