Section names cannot be resolved for rules after inheritance using use

[Xewar313]

rule test1:
    output: "somefile.txt"

use rule test1 as test2 with:
    input: "x.txt"

def test():
    print(rules.test2.input)
    print(rules.test2.output)
    return "result.txt" 

Second output should resolve to output section in test1 rule, but its reference cannot be found.