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error[E0659]: `empty_helper` is ambiguous
--> $DIR/helper-attr-blocked-by-import-ambig.rs:7:3
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LL | #[empty_helper]
| ^^^^^^^^^^^^ ambiguous name
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= note: ambiguous because of a name conflict with a derive helper attribute
note: `empty_helper` could refer to the derive helper attribute defined here
--> $DIR/helper-attr-blocked-by-import-ambig.rs:10:10
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LL | #[derive(Empty)]
| ^^^^^
note: `empty_helper` could also refer to the attribute macro imported here
--> $DIR/helper-attr-blocked-by-import-ambig.rs:5:5
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LL | use test_macros::empty_attr as empty_helper;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= help: use `crate::empty_helper` to refer to this attribute macro unambiguously
warning: derive helper attribute is used before it is introduced
--> $DIR/helper-attr-blocked-by-import-ambig.rs:7:3
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LL | #[empty_helper]
| ^^^^^^^^^^^^
...
LL | #[derive(Empty)]
| ----- the attribute is introduced here
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= 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 #79202 <https://github.com/rust-lang/rust/issues/79202>
= note: `#[warn(legacy_derive_helpers)]` on by default
error: aborting due to previous error; 1 warning emitted
For more information about this error, try `rustc --explain E0659`.
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