Merge "Floss: Fix a tiny typo in build.py warning"

        # Validate that the target is valid

        if self.target not in VALID_TARGETS:

            print('Target {} is not valid. Must be in {}', self.target, VALID_TARGETS)

            print('Target {} is not valid. Must be in {}'.format(self.target, VALID_TARGETS))

            return

        if self.target == 'prepare':