warning: calling `foo8` can unsafe
    --> $DIR/dont_panic_2.rs:76:5
     |
76   |     x.push("");
     |     ^^^^^^^^^^ this can unsafe
     |
note: `std::vec::Vec::<&str>::push` can unsafe here
    --> /home/gh-estebank/.rustup/toolchains/nightly-2024-05-06-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/alloc/src/vec/mod.rs:1880:13
     |
1876 |     pub fn push(&mut self, value: T) {
     |     --------------------------------
...
1880 |             self.buf.reserve_for_push(self.len);
     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: `alloc::raw_vec::RawVec::<&str>::reserve_for_push` can unsafe here
    --> /home/gh-estebank/.rustup/toolchains/nightly-2024-05-06-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/alloc/src/raw_vec.rs:302:24
     |
301  |     pub fn reserve_for_push(&mut self, len: usize) {
     |     ----------------------------------------------
302  |         handle_reserve(self.grow_amortized(len, 1));
     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: `alloc::raw_vec::RawVec::<&str>::grow_amortized` can unsafe here
    --> /home/gh-estebank/.rustup/toolchains/nightly-2024-05-06-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/alloc/src/raw_vec.rs:404:19
     |
383  |     fn grow_amortized(&mut self, len: usize, additional: usize) -> Result<(), TryReserveError> {
     |     ------------------------------------------------------------------------------------------
...
404  |         let ptr = finish_grow(new_layout, self.current_memory(), &mut self.alloc)?;
     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
note: `alloc::raw_vec::finish_grow::<std::alloc::Global>` can unsafe here
    --> /home/gh-estebank/.rustup/toolchains/nightly-2024-05-06-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/alloc/src/raw_vec.rs:482:13
     |
464  | / fn finish_grow<A>(
465  | |     new_layout: Result<Layout, LayoutError>,
466  | |     current_memory: Option<(NonNull<u8>, Layout)>,
467  | |     alloc: &mut A,
468  | | ) -> Result<NonNull<[u8]>, TryReserveError>
469  | | where
470  | |     A: Allocator,
     | |_________________-
...
482  |               alloc.grow(ptr, old_layout, new_layout)
     |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
485  |           alloc.allocate(new_layout)
     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^
     = note: `#[warn(redpen::call_unsafe)]` on by default

warning: calling `foo8` can unsafe
   --> $DIR/dont_panic_2.rs:79:1
    |
79  | }
    | ^ this can unsafe
    |
note: `std::ptr::drop_in_place::<std::vec::Vec<&str>>` can unsafe here
   --> /home/gh-estebank/.rustup/toolchains/nightly-2024-05-06-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ptr/mod.rs:497:1
    |
497 | pub unsafe fn drop_in_place<T: ?Sized>(to_drop: *mut T) {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: 2 warnings emitted