error[E0566]: conflicting representation hints
  --> $DIR/conflicting-repr-hints.rs:13:8
   |
LL | #[repr(C, u64)]
   |        ^  ^^^
   |
   = note: `#[deny(conflicting_repr_hints)]` on by default
   = 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 #68585 <https://github.com/rust-lang/rust/issues/68585>

error[E0566]: conflicting representation hints
  --> $DIR/conflicting-repr-hints.rs:19:8
   |
LL | #[repr(u32, u64)]
   |        ^^^  ^^^
   |
   = 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 #68585 <https://github.com/rust-lang/rust/issues/68585>

error[E0587]: type has conflicting packed and align representation hints
  --> $DIR/conflicting-repr-hints.rs:29:1
   |
LL | struct F(i32);
   | ^^^^^^^^^^^^^^

error[E0587]: type has conflicting packed and align representation hints
  --> $DIR/conflicting-repr-hints.rs:33:1
   |
LL | struct G(i32);
   | ^^^^^^^^^^^^^^

error[E0587]: type has conflicting packed and align representation hints
  --> $DIR/conflicting-repr-hints.rs:37:1
   |
LL | struct H(i32);
   | ^^^^^^^^^^^^^^

error[E0634]: type has conflicting packed representation hints
  --> $DIR/conflicting-repr-hints.rs:40:1
   |
LL | struct I(i32);
   | ^^^^^^^^^^^^^^

error[E0634]: type has conflicting packed representation hints
  --> $DIR/conflicting-repr-hints.rs:44:1
   |
LL | struct J(i32);
   | ^^^^^^^^^^^^^^

error[E0587]: type has conflicting packed and align representation hints
  --> $DIR/conflicting-repr-hints.rs:50:1
   |
LL | / union X {
LL | |
LL | |     i: i32,
LL | | }
   | |_^

error[E0587]: type has conflicting packed and align representation hints
  --> $DIR/conflicting-repr-hints.rs:57:1
   |
LL | / union Y {
LL | |
LL | |     i: i32,
LL | | }
   | |_^

error[E0587]: type has conflicting packed and align representation hints
  --> $DIR/conflicting-repr-hints.rs:64:1
   |
LL | / union Z {
LL | |
LL | |     i: i32,
LL | | }
   | |_^

error: aborting due to 10 previous errors

Some errors have detailed explanations: E0566, E0587, E0634.
For more information about an error, try `rustc --explain E0566`.