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 (name vs any other name during import resolution)
37 --> $DIR/derive-helper-shadowing.rs:26:13
39 LL | use empty_helper;
40 | ^^^^^^^^^^^^ ambiguous name
42 note: `empty_helper` could refer to the derive helper attribute defined here
43 --> $DIR/derive-helper-shadowing.rs:22:10
47 note: `empty_helper` could also refer to the attribute macro imported here
48 --> $DIR/derive-helper-shadowing.rs:10:5
50 LL | use test_macros::empty_attr as empty_helper;
51 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
52 = help: use `crate::empty_helper` to refer to this attribute macro unambiguously
54 error[E0659]: `empty_helper` is ambiguous (derive helper attribute vs any other name)
55 --> $DIR/derive-helper-shadowing.rs:19:3
58 | ^^^^^^^^^^^^ ambiguous name
60 note: `empty_helper` could refer to the derive helper attribute defined here
61 --> $DIR/derive-helper-shadowing.rs:22:10
65 note: `empty_helper` could also refer to the attribute macro imported here
66 --> $DIR/derive-helper-shadowing.rs:10:5
68 LL | use test_macros::empty_attr as empty_helper;
69 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
70 = help: use `crate::empty_helper` to refer to this attribute macro unambiguously
72 warning: derive helper attribute is used before it is introduced
73 --> $DIR/derive-helper-shadowing.rs:19:3
79 | ----- the attribute is introduced here
81 = note: `#[warn(legacy_derive_helpers)]` on by default
82 = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
83 = note: for more information, see issue #79202 <https://github.com/rust-lang/rust/issues/79202>
85 error: aborting due to 5 previous errors; 1 warning emitted
87 For more information about this error, try `rustc --explain E0659`.