error: type named `Error` that implements `Error`
  --> $DIR/error_impl_error.rs:7:12
   |
LL |     struct Error;
   |            ^^^^^
   |
note: `Error` was implemented here
  --> $DIR/error_impl_error.rs:15:5
   |
LL |     impl std::error::Error for Error {}
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   = note: `-D clippy::error-impl-error` implied by `-D warnings`

error: type named `Error` that implements `Error`
  --> $DIR/error_impl_error.rs:20:10
   |
LL |     enum Error {}
   |          ^^^^^
   |
note: `Error` was implemented here
  --> $DIR/error_impl_error.rs:28:5
   |
LL |     impl std::error::Error for Error {}
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: type named `Error` that implements `Error`
  --> $DIR/error_impl_error.rs:32:11
   |
LL |     union Error {
   |           ^^^^^
   |
note: `Error` was implemented here
  --> $DIR/error_impl_error.rs:49:5
   |
LL |     impl std::error::Error for Error {}
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: type alias named `Error` that implements `Error`
  --> $DIR/error_impl_error.rs:53:10
   |
LL |     type Error = std::fmt::Error;
   |          ^^^^^

error: aborting due to 4 previous errors