error[E0412]: cannot find type `Subset` in this scope
  --> $DIR/thaw-transmute-invalid-enum.rs:34:41
   |
LL |     assert::is_transmutable::<Superset, Subset>();
   |                                         ^^^^^^ not found in this scope
   |
help: you might be missing a type parameter
   |
LL | fn test<Subset>() {
   |        ++++++++

error[E0517]: attribute should be applied to a struct or union
  --> $DIR/thaw-transmute-invalid-enum.rs:21:11
   |
LL |   #[repr(C, packed(2))]
   |             ^^^^^^^^^
LL |
LL | / enum OxFF {
LL | |     V = 0xFF,
LL | | }
   | |_- not a struct or union

error[E0658]: use of unstable library feature `transmutability`
  --> $DIR/thaw-transmute-invalid-enum.rs:4:20
   |
LL |     use std::mem::{Assume, TransmuteFrom};
   |                    ^^^^^^
   |
   = note: see issue #99571 <https://github.com/rust-lang/rust/issues/99571> for more information
   = help: add `#![feature(transmutability)]` to the crate attributes to enable
   = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date

error[E0658]: use of unstable library feature `transmutability`
  --> $DIR/thaw-transmute-invalid-enum.rs:4:28
   |
LL |     use std::mem::{Assume, TransmuteFrom};
   |                            ^^^^^^^^^^^^^
   |
   = note: see issue #99571 <https://github.com/rust-lang/rust/issues/99571> for more information
   = help: add `#![feature(transmutability)]` to the crate attributes to enable
   = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date

error[E0658]: use of unstable library feature `transmutability`
  --> $DIR/thaw-transmute-invalid-enum.rs:10:14
   |
LL |         Dst: TransmuteFrom<Src>,
   |              ^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #99571 <https://github.com/rust-lang/rust/issues/99571> for more information
   = help: add `#![feature(transmutability)]` to the crate attributes to enable
   = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date

error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
  --> $DIR/thaw-transmute-invalid-enum.rs:29:9
   |
LL |         a: Ox00,
   |         ^^^^^^^
   |
   = note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
help: wrap the field type in `ManuallyDrop<...>`
   |
LL |         a: std::mem::ManuallyDrop<Ox00>,
   |            +++++++++++++++++++++++    +

error: aborting due to 6 previous errors

Some errors have detailed explanations: E0412, E0517, E0658, E0740.
For more information about an error, try `rustc --explain E0412`.