error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be unsafe
  --> $DIR/unsafe-fields.rs:20:5
   |
LL |     unsafe unsafe_noncopy_field: Vec<u32>,
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: unsafe fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
help: wrap the field type in `ManuallyDrop<...>`
   |
LL |     unsafe unsafe_noncopy_field: std::mem::ManuallyDrop<Vec<u32>>,
   |                                  +++++++++++++++++++++++        +

error[E0133]: use of unsafe field is unsafe and requires unsafe block
  --> $DIR/unsafe-fields.rs:15:30
   |
LL |     let A::WithUnsafeField { unsafe_field, safe_field } = a;
   |                              ^^^^^^^^^^^^ use of unsafe field
   |
   = note: unsafe fields may carry library invariants

error[E0133]: initializing type with an unsafe field is unsafe and requires unsafe block
  --> $DIR/unsafe-fields.rs:43:9
   |
LL | /         WithUnsafeField {
LL | |             unsafe_field: 0,
LL | |             safe_field: 0,
LL | |         }
   | |_________^ initialization of struct with unsafe field
   |
   = note: unsafe fields may carry library invariants

error[E0133]: use of unsafe field is unsafe and requires unsafe block
  --> $DIR/unsafe-fields.rs:80:9
   |
LL |         self.unsafe_field = 2;
   |         ^^^^^^^^^^^^^^^^^ use of unsafe field
   |
   = note: unsafe fields may carry library invariants

error[E0133]: use of unsafe field is unsafe and requires unsafe block
  --> $DIR/unsafe-fields.rs:85:9
   |
LL |         self.unsafe_field
   |         ^^^^^^^^^^^^^^^^^ use of unsafe field
   |
   = note: unsafe fields may carry library invariants

error[E0133]: use of unsafe field is unsafe and requires unsafe block
  --> $DIR/unsafe-fields.rs:90:10
   |
LL |         &self.unsafe_field
   |          ^^^^^^^^^^^^^^^^^ use of unsafe field
   |
   = note: unsafe fields may carry library invariants

error[E0133]: use of unsafe field is unsafe and requires unsafe block
  --> $DIR/unsafe-fields.rs:95:32
   |
LL |         let Self { safe_field, unsafe_field } = self;
   |                                ^^^^^^^^^^^^ use of unsafe field
   |
   = note: unsafe fields may carry library invariants

error[E0133]: use of unsafe field is unsafe and requires unsafe block
  --> $DIR/unsafe-fields.rs:106:20
   |
LL |         &raw const self.unsafe_field
   |                    ^^^^^^^^^^^^^^^^^ use of unsafe field
   |
   = note: unsafe fields may carry library invariants

error: aborting due to 8 previous errors

Some errors have detailed explanations: E0133, E0740.
For more information about an error, try `rustc --explain E0133`.