error: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:34:9
   |
LL |         FOO => {}
   |         ^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:36:9
   |
LL |         _ => {} // should not be emitting unreachable warning
   |         ^
   |
note: the lint level is defined here
  --> $DIR/consts-opaque.rs:6:9
   |
LL | #![deny(unreachable_patterns)]
   |         ^^^^^^^^^^^^^^^^^^^^

error: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:41:9
   |
LL |         FOO_REF => {}
   |         ^^^^^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:43:9
   |
LL |         Foo(_) => {} // should not be emitting unreachable warning
   |         ^^^^^^

warning: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:49:9
   |
LL |         FOO_REF_REF => {}
   |         ^^^^^^^^^^^
   |
   = note: `#[warn(indirect_structural_match)]` 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 #62411 <https://github.com/rust-lang/rust/issues/62411>

error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:57:9
   |
LL |         BAR => {} // should not be emitting unreachable warning
   |         ^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:57:9
   |
LL |         Bar => {}
   |         --- matches any value
LL |         BAR => {} // should not be emitting unreachable warning
   |         ^^^ unreachable pattern

error: unreachable pattern
  --> $DIR/consts-opaque.rs:60:9
   |
LL |         Bar => {}
   |         --- matches any value
...
LL |         _ => {}
   |         ^ unreachable pattern

error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:65:9
   |
LL |         BAR => {}
   |         ^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:67:9
   |
LL |         Bar => {} // should not be emitting unreachable warning
   |         ^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:69:9
   |
LL |         Bar => {} // should not be emitting unreachable warning
   |         --- matches any value
LL |
LL |         _ => {}
   |         ^ unreachable pattern

error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:74:9
   |
LL |         BAR => {}
   |         ^^^

error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:76:9
   |
LL |         BAR => {} // should not be emitting unreachable warning
   |         ^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:76:9
   |
LL |         BAR => {} // should not be emitting unreachable warning
   |         ^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:79:9
   |
LL |         _ => {} // should not be emitting unreachable warning
   |         ^

error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:84:9
   |
LL |         BAZ => {}
   |         ^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:86:9
   |
LL |         Baz::Baz1 => {} // should not be emitting unreachable warning
   |         ^^^^^^^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:88:9
   |
LL |         _ => {}
   |         ^

error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:94:9
   |
LL |         BAZ => {}
   |         ^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:96:9
   |
LL |         _ => {}
   |         ^

error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]`
  --> $DIR/consts-opaque.rs:101:9
   |
LL |         BAZ => {}
   |         ^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:103:9
   |
LL |         Baz::Baz2 => {} // should not be emitting unreachable warning
   |         ^^^^^^^^^

error: unreachable pattern
  --> $DIR/consts-opaque.rs:105:9
   |
LL |         _ => {} // should not be emitting unreachable warning
   |         ^

error: aborting due to 22 previous errors; 1 warning emitted