#79 copies CTest Test.xml files over to the directory specified by --test-result-base, but not the *.xunit.xml result files. Since I am looking for my xunit "test results", the following documentation is misleading to me:
The base path for all test results. The default value is the --build-base argument. Each package uses a subdirectory in that base path as its package specific test result directory.
https://colcon.readthedocs.io/en/released/reference/verb/test.html
It seems like *.xunit.xml files should be copied over as well, or the documentation could be clarified.