tracetools_test.test_node fails on version regex check

        # Check fields
        rcl_init_events = self.get_events_with_name('ros2:rcl_init')
        for event in rcl_init_events:
            self.assertValidHandle(event, 'context_handle')
            # TODO actually compare to version fetched from the tracetools package?
            version_field = self.get_field(event, 'version')
>           self.assertRegex(version_field, VERSION_REGEX, 'invalid version number')
E           AssertionError: Regex didn't match: '^[0-9]\\.[0-9]\\.[0-9]$' not found in '0.2.10' : invalid version number

test/test_node.py:46: AssertionError