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On stable, suggest removing `#![feature]` for features that have been stabilized I don't know how to test this (https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/Run.20tests.20without.20enabling.20nightly.20features.3F). I confirmed locally that this gives the appropriate help with `channel = "beta"`: ``` error[E0554]: `#![feature]` may not be used on the beta release channel --> src/lib.rs:2:1 | 2 | #![feature(min_const_generics)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute | = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable error[E0554]: `#![feature]` may not be used on the beta release channel --> src/lib.rs:3:1 | 3 | #![feature(min_const_generics, min_specialization)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable error[E0554]: `#![feature]` may not be used on the beta release channel --> src/lib.rs:4:1 | 4 | #![feature(box_patterns)] | ^^^^^^^^^^^^^^^^^^^^^^^^^ ``` Closes https://github.com/rust-lang/rust/issues/83715. |
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