exit status: 1 with stderr:
<stdin>:4:5: error: instance method 'f3()' is private and cannot be referenced from an '@inlinable' function f3() ^ <stdin>:7:16: note: instance method 'f3()' is not '@usableFromInline' or public private func f3() { ^ <stdin>:8:5: error: cannot find 'compute' in scope compute() ^~~~~~~