Local execute action fails to flush process output on exit #859
Description
Operating System:
Ubuntu 22.04
ROS version or commit hash:
humble
RMW implementation (if applicable):
No response
RMW Configuration (if applicable):
No response
Client library (if applicable):
No response
'ros2 doctor --report' output
Not applicable
Steps to reproduce issue
Just launch any node that produces output along with a time delayed shutdown.
Expected behavior
All output gets flushed with no error
Actual behavior
Every now and then an AttributeError about an info method missing from an io.StringIO gets raised.
Additional information
Issue is simpler to explain than to reproduce.
launch/launch/launch/actions/execute_local.py
Line 348 in 1c67747
io.StringIO buffer as if it was a logger. This was silently addressed for Iron and onwards by an unrelated patch (#679) that was never backported to Humble.
Even if we cannot backport #679 in full, backport that one liner would be ideal.