Make sure the most recent CI jobs (config, quality, build_test_example) all run fine with no failures
if "check clang-format" failed: the code contributor has to run ./do-clang-format.py --apply eventually with the --all option
if "check copyright" failed the code contributor has to run./do-copyright.py --add=20xy
Make sure also the jobs with MR-label ready for code review succeed. This includes the optional jobs, in particular 'coverage', 'release-clang-8", "release-u-18.04" and make sure no problems occur. You may have to trigger a pipeline manually to check this.
Check in the "coverage" job output that the coverage did not decrease. It should always stay, or increase. If it decreased --> ask contributor to add further needed unit tests, and check coverage report.
On the MR page, open the "Open in Web IDE" tool
Check if the provided solution solves the Issue, discuss on gitlab
Check that all changes are actually related to the issue
There are no debug statements left, not even commented out
