The tests for the bob exercise are not up-to-date with the canonical data.
To check what has changed and if new tests have been added to the canonical data, please have a look at the commit history of the canonical data file for the exercise bob.
Please update version and/or test file, and, if the new test(s) fail, fix the reference implementation.
Feel free to leave a comment if you have any questions.

Background info: each exercise which has canonical data should have a version file. This file states which version of the canonical data the exercise implements. The version can be found at the top of the canonical data file for that exercise.