error[E0597]: `local_data` does not live long enough --> tests/ui/invalid_closure.rs:7:27 | 7 | let ref_: &[u8] = &local_data; | ^^^^^^^^^^^ borrowed value does not live long enough ... 13 | PyCFunction::new_closure(closure_fn, py).unwrap().into() | ---------------------------------------- argument requires that `local_data` is borrowed for `'static` 14 | }); | - `local_data` dropped here while still borrowed error[E0373]: closure may outlive the current function, but it borrows `ref_`, which is owned by the current function --> tests/ui/invalid_closure.rs:9:26 | 9 | let closure_fn = |_args: &PyTuple, _kwargs: Option<&PyDict>| -> PyResult<()> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ may outlive borrowed value `ref_` 10 | println!("This is five: {:?}", ref_.len()); | ---- `ref_` is borrowed here | note: function requires argument type to outlive `'static` --> tests/ui/invalid_closure.rs:13:9 | 13 | PyCFunction::new_closure(closure_fn, py).unwrap().into() | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: to force the closure to take ownership of `ref_` (and any other referenced variables), use the `move` keyword | 9 | let closure_fn = move |_args: &PyTuple, _kwargs: Option<&PyDict>| -> PyResult<()> { | ++++