The reproducible build QA might be able to the current user name when building to test that recipes aren't encoding it in their output, making them non-reproducible. This might only mean faking the actual text username/groupname, and/or the UID/GID.
Build move to 5.0 -- ../Randy
Bulk move of 5.0 medium importance issues to 5.99. Move to 5.1 if you want to actively work on an issue.
Move to 5.99 since no one is actively working on this issue. Move to 5.x if you start on a task, please.