1 error: cannot use a derive helper attribute through an import
2 --> $DIR/derive-helper-shadowing.rs:42:15
7 note: the derive helper attribute imported here
8 --> $DIR/derive-helper-shadowing.rs:41:17
10 LL | use empty_helper as renamed;
11 | ^^^^^^^^^^^^^^^^^^^^^^^
13 error: cannot find attribute `empty_helper` in this scope
14 --> $DIR/derive-helper-shadowing.rs:38:22
16 LL | #[derive(GenHelperUse)]
19 = note: consider importing this attribute macro:
21 = note: this error originates in the derive macro `GenHelperUse` (in Nightly builds, run with -Z macro-backtrace for more info)
23 error: cannot find attribute `empty_helper` in this scope
24 --> $DIR/derive-helper-shadowing.rs:14:11
29 LL | gen_helper_use!();
30 | ----------------- in this macro invocation
32 = note: consider importing this attribute macro:
34 = note: this error originates in the macro `gen_helper_use` (in Nightly builds, run with -Z macro-backtrace for more info)
36 error[E0659]: `empty_helper` is ambiguous
37 --> $DIR/derive-helper-shadowing.rs:26:13
39 LL | use empty_helper;
40 | ^^^^^^^^^^^^ ambiguous name
42 = note: ambiguous because of multiple potential import sources
43 note: `empty_helper` could refer to the derive helper attribute defined here
44 --> $DIR/derive-helper-shadowing.rs:22:10
48 note: `empty_helper` could also refer to the attribute macro imported here
49 --> $DIR/derive-helper-shadowing.rs:10:5
51 LL | use test_macros::empty_attr as empty_helper;
52 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
53 = help: use `crate::empty_helper` to refer to this attribute macro unambiguously
55 error[E0659]: `empty_helper` is ambiguous
56 --> $DIR/derive-helper-shadowing.rs:19:3
59 | ^^^^^^^^^^^^ ambiguous name
61 = note: ambiguous because of a name conflict with a derive helper attribute
62 note: `empty_helper` could refer to the derive helper attribute defined here
63 --> $DIR/derive-helper-shadowing.rs:22:10
67 note: `empty_helper` could also refer to the attribute macro imported here
68 --> $DIR/derive-helper-shadowing.rs:10:5
70 LL | use test_macros::empty_attr as empty_helper;
71 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
72 = help: use `crate::empty_helper` to refer to this attribute macro unambiguously
74 warning: derive helper attribute is used before it is introduced
75 --> $DIR/derive-helper-shadowing.rs:19:3
81 | ----- the attribute is introduced here
83 = note: `#[warn(legacy_derive_helpers)]` on by default
84 = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
85 = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
87 error: aborting due to 5 previous errors; 1 warning emitted
89 For more information about this error, try `rustc --explain E0659`.