@witty-crayon-22786 and anyone else who may be interested: i totally redid the warn on failure to match source globs pr by adding a new rust intrinsic (but was able to keep the tests i had already made as-is!) (1) i'm not familiar with rust testing or with how we test our rust -- what tests should i add in rust? (2) there's a mild but repeatable perf decline of

+0.3s

in

./pants list ::

in the pants repo, even when pants is not trying to find whether a file was matched. i'm going to try it on the twitter repo with and without checking for source glob matches. since ci is green minus linting, that's my focus for now: https://github.com/pantsbuild/pants/pull/5769