error: a dangling pointer will be produced because the temporary `Vec<u8>` will be dropped
  --> $DIR/methods.rs:4:15
   |
LL |     vec![0u8].as_ptr();
   |     --------- ^^^^^^ this pointer will immediately be invalid
   |     |
   |     this `Vec<u8>` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
   |
   = note: pointers do not have a lifetime; when calling `as_ptr` the `Vec<u8>` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
   = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>
note: the lint level is defined here
  --> $DIR/methods.rs:1:9
   |
LL | #![deny(dangling_pointers_from_temporaries)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: a dangling pointer will be produced because the temporary `Vec<u8>` will be dropped
  --> $DIR/methods.rs:6:15
   |
LL |     vec![0u8].as_mut_ptr();
   |     --------- ^^^^^^^^^^ this pointer will immediately be invalid
   |     |
   |     this `Vec<u8>` is deallocated at the end of the statement, bind it to a variable to extend its lifetime
   |
   = note: pointers do not have a lifetime; when calling `as_mut_ptr` the `Vec<u8>` will be deallocated at the end of the statement because nothing is referencing it as far as the type system is concerned
   = help: for more information, see <https://doc.rust-lang.org/reference/destructors.html>

error: aborting due to 2 previous errors