error: this seems like a manual implementation of the non-exhaustive pattern
  --> tests/ui/manual_non_exhaustive_enum.rs:4:1
   |
LL | / pub enum E {
LL | |
LL | |     A,
LL | |     B,
LL | |     #[doc(hidden)]
LL | |     _C,
LL | | }
   | |_^
   |
help: remove this variant
  --> tests/ui/manual_non_exhaustive_enum.rs:9:5
   |
LL |     _C,
   |     ^^
   = note: `-D clippy::manual-non-exhaustive` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::manual_non_exhaustive)]`
help: use the `#[non_exhaustive]` attribute instead
   |
LL + #[non_exhaustive]
LL | pub enum E {
   |

error: this seems like a manual implementation of the non-exhaustive pattern
  --> tests/ui/manual_non_exhaustive_enum.rs:29:1
   |
LL | / pub enum NoUnderscore {
LL | |     A,
LL | |     B,
LL | |     #[doc(hidden)]
LL | |     C,
LL | | }
   | |_^
   |
help: remove this variant
  --> tests/ui/manual_non_exhaustive_enum.rs:33:5
   |
LL |     C,
   |     ^
help: use the `#[non_exhaustive]` attribute instead
   |
LL + #[non_exhaustive]
LL | pub enum NoUnderscore {
   |

error: aborting due to 2 previous errors