1 error[E0599]: `*const u8` doesn't implement `std::fmt::Display`
2 --> $DIR/issue-21596.rs:4:22
4 LL | println!("{}", z.to_string());
5 | ^^^^^^^^^ `*const u8` cannot be formatted with the default formatter
7 = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
8 = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
9 = note: the following trait bounds were not satisfied:
10 `*const u8: std::fmt::Display`
11 which is required by `*const u8: ToString`
13 error: aborting due to previous error
15 For more information about this error, try `rustc --explain E0599`.