Buildbot run included revision list question

I noticed that if a buildbot run includes changes from a sub-project like compiler-rt it will show up like this in the status:

Revision 255259
Got Revision 255262

255262 was an update to several test cases in compiler-rt. But the sub-project revision will not be listed in the "All Changes:" section. So if the test case changes cause a problem will the author be informed or not?

For reference:

http://lab.llvm.org:8011/builders/sanitizer-ppc64le-linux/builds/4409