error: cfg attributes not allowed on this item --> ui_tests/export_mod_cfg.rs:11:1 | 11 | #[cfg(not(feature = "foo"))] | ^ error[E0433]: failed to resolve: use of undeclared crate or module `test_mod` --> ui_tests/export_mod_cfg.rs:23:8 | 23 | if test_mod::test_fn(n) { | ^^^^^^^^ use of undeclared crate or module `test_mod`