Compiling playground v0.0.1 (file:///playground)
warning: use of deprecated item 'std::heap::Heap': type renamed to `Global`
 --> src/main.rs:9:32
  |
9 | use std::heap::{Alloc, Layout, Heap};
  |                                ^^^^
  |
  = note: #[warn(deprecated)] on by default

warning: use of deprecated item 'std::heap::Heap': type renamed to `Global`
  --> src/main.rs:34:27
   |
34 |                 let ptr = Heap.alloc(Layout::array::<T>(1).unwrap());
   |                           ^^^^

warning: use of deprecated item 'std::heap::Heap': type renamed to `Global`
  --> src/main.rs:38:27
   |
38 |                 let ptr = Heap.realloc(self.ptr.as_ptr() as *mut _,
   |                           ^^^^

warning: use of deprecated item 'std::heap::Heap': type renamed to `Global`
  --> src/main.rs:47:29
   |
47 |                 Err(err) => Heap.oom(err),
   |                             ^^^^

warning: use of deprecated item 'std::heap::Heap': type renamed to `Global`
  --> src/main.rs:61:17
   |
61 |                 Heap.dealloc(self.ptr.as_ptr() as *mut _,
   |                 ^^^^

error[E0308]: mismatched types
  --> src/main.rs:38:40
   |
38 |                 let ptr = Heap.realloc(self.ptr.as_ptr() as *mut _,
   |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::ptr::NonNull`, found *-ptr
   |
   = note: expected type `std::ptr::NonNull<std::heap::Opaque>`
              found type `*mut _`

error[E0308]: mismatched types
  --> src/main.rs:40:40
   |
40 |                                        Layout::array::<T>(new_cap).unwrap());
   |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected usize, found struct `std::heap::Layout`
   |
   = note: expected type `usize`
              found type `std::heap::Layout`

error[E0599]: no method named `oom` found for type `std::heap::Global` in the current scope
  --> src/main.rs:47:34
   |
47 |                 Err(err) => Heap.oom(err),
   |                                  ^^^

error[E0308]: mismatched types
  --> src/main.rs:61:30
   |
61 |                 Heap.dealloc(self.ptr.as_ptr() as *mut _,
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `std::ptr::NonNull`, found *-ptr
   |
   = note: expected type `std::ptr::NonNull<std::heap::Opaque>`
              found type `*mut _`

error: aborting due to 4 previous errors

Some errors occurred: E0308, E0599.
For more information about an error, try `rustc --explain E0308`.
error: Could not compile `playground`.

To learn more, run the command again with --verbose.