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error[E0392]: lifetime parameter `'a` is never used
--> $DIR/unused-generic-parameters.rs:8:8
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LL | type A<'a> = ();
| ^^ unused lifetime parameter
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= help: consider removing `'a` or referring to it in the body of the type alias
error[E0392]: type parameter `T` is never used
--> $DIR/unused-generic-parameters.rs:12:8
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LL | type B<T> = ();
| ^ unused type parameter
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= help: consider removing `T` or referring to it in the body of the type alias
= help: if you intended `T` to be a const parameter, use `const T: /* Type */` instead
error[E0392]: type parameter `T` is never used
--> $DIR/unused-generic-parameters.rs:18:8
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LL | type C<T: Copy> = ();
| ^ unused type parameter
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= help: consider removing `T` or referring to it in the body of the type alias
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0392`.
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