tests/ui/repr/repr-transparent-non-exhaustive.stderr

error: zero-sized fields in `repr(transparent)` cannot contain external types with private fields
  --> $DIR/repr-transparent-non-exhaustive.rs:44:22
   |
LL | pub struct T5(Sized, Private);
   |                      ^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `Private`, which contains private fields, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:49:22
   |
LL | pub struct T6(Sized, NonExhaustive);
   |                      ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:54:23
   |
LL | pub struct T6a(Sized, <i32 as Trait>::Assoc); // normalizes to `NonExhaustive`
   |                       ^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:59:22
   |
LL | pub struct T7(Sized, NonExhaustiveEnum);
   |                      ^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveEnum`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:64:22
   |
LL | pub struct T8(Sized, NonExhaustiveVariant);
   |                      ^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveVariant`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external types with private fields
  --> $DIR/repr-transparent-non-exhaustive.rs:69:22
   |
LL | pub struct T9(Sized, InternalIndirection<Private>);
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `Private`, which contains private fields, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:74:23
   |
LL | pub struct T10(Sized, InternalIndirection<NonExhaustive>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:79:23
   |
LL | pub struct T11(Sized, InternalIndirection<NonExhaustiveEnum>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveEnum`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:84:23
   |
LL | pub struct T12(Sized, InternalIndirection<NonExhaustiveVariant>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveVariant`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external types with private fields
  --> $DIR/repr-transparent-non-exhaustive.rs:89:23
   |
LL | pub struct T13(Sized, ExternalIndirection<Private>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `Private`, which contains private fields, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:94:23
   |
LL | pub struct T14(Sized, ExternalIndirection<NonExhaustive>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:99:23
   |
LL | pub struct T15(Sized, ExternalIndirection<NonExhaustiveEnum>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveEnum`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:104:23
   |
LL | pub struct T16(Sized, ExternalIndirection<NonExhaustiveVariant>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveVariant`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:109:16
   |
LL | pub struct T17(NonExhaustive, Sized);
   |                ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:114:31
   |
LL | pub struct T18(NonExhaustive, NonExhaustive);
   |                               ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external types with private fields
  --> $DIR/repr-transparent-non-exhaustive.rs:119:31
   |
LL | pub struct T19(NonExhaustive, Private);
   |                               ^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `Private`, which contains private fields, so it could become non-zero-sized in the future.

error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:124:32
   |
LL | pub struct T19Flipped(Private, NonExhaustive);
   |                                ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.

error: aborting due to 17 previous errors

Future incompatibility report: Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external types with private fields
  --> $DIR/repr-transparent-non-exhaustive.rs:44:22
   |
LL | pub struct T5(Sized, Private);
   |                      ^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `Private`, which contains private fields, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:49:22
   |
LL | pub struct T6(Sized, NonExhaustive);
   |                      ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:54:23
   |
LL | pub struct T6a(Sized, <i32 as Trait>::Assoc); // normalizes to `NonExhaustive`
   |                       ^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:59:22
   |
LL | pub struct T7(Sized, NonExhaustiveEnum);
   |                      ^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveEnum`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:64:22
   |
LL | pub struct T8(Sized, NonExhaustiveVariant);
   |                      ^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveVariant`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external types with private fields
  --> $DIR/repr-transparent-non-exhaustive.rs:69:22
   |
LL | pub struct T9(Sized, InternalIndirection<Private>);
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `Private`, which contains private fields, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:74:23
   |
LL | pub struct T10(Sized, InternalIndirection<NonExhaustive>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:79:23
   |
LL | pub struct T11(Sized, InternalIndirection<NonExhaustiveEnum>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveEnum`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:84:23
   |
LL | pub struct T12(Sized, InternalIndirection<NonExhaustiveVariant>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveVariant`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external types with private fields
  --> $DIR/repr-transparent-non-exhaustive.rs:89:23
   |
LL | pub struct T13(Sized, ExternalIndirection<Private>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `Private`, which contains private fields, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:94:23
   |
LL | pub struct T14(Sized, ExternalIndirection<NonExhaustive>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:99:23
   |
LL | pub struct T15(Sized, ExternalIndirection<NonExhaustiveEnum>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveEnum`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:104:23
   |
LL | pub struct T16(Sized, ExternalIndirection<NonExhaustiveVariant>);
   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustiveVariant`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:109:16
   |
LL | pub struct T17(NonExhaustive, Sized);
   |                ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:114:31
   |
LL | pub struct T18(NonExhaustive, NonExhaustive);
   |                               ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external types with private fields
  --> $DIR/repr-transparent-non-exhaustive.rs:119:31
   |
LL | pub struct T19(NonExhaustive, Private);
   |                               ^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `Private`, which contains private fields, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Future breakage diagnostic:
error: zero-sized fields in `repr(transparent)` cannot contain external non-exhaustive types
  --> $DIR/repr-transparent-non-exhaustive.rs:124:32
   |
LL | pub struct T19Flipped(Private, NonExhaustive);
   |                                ^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #78586 <https://github.com/rust-lang/rust/issues/78586>
   = note: this field contains `NonExhaustive`, which is marked with `#[non_exhaustive]`, so it could become non-zero-sized in the future.
note: the lint level is defined here
  --> $DIR/repr-transparent-non-exhaustive.rs:1:9
   |
LL | #![deny(repr_transparent_non_zst_fields)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^