Use generic NonZero internally.

compiler/rustc_lint/src/lib.rs

@@ -31,6 +31,7 @@
 #![feature(array_windows)]
 #![feature(box_patterns)]
 #![feature(control_flow_enum)]
+#![feature(generic_nonzero)]
 #![feature(if_let_guard)]
 #![feature(iter_order_by)]
 #![feature(let_chains)]

compiler/rustc_lint/src/lints.rs

@@ -1,7 +1,6 @@
 #![allow(rustc::diagnostic_outside_of_impl)]
 #![allow(rustc::untranslatable_diagnostic)]
-
-use std::num::NonZeroU32;
+use std::num::NonZero;
 
 use crate::errors::RequestedLevel;
 use crate::fluent_generated as fluent;
@@ -402,7 +401,7 @@ pub struct BuiltinIncompleteFeaturesHelp;
 #[derive(Subdiagnostic)]
 #[note(lint_note)]
 pub struct BuiltinFeatureIssueNote {
-    pub n: NonZeroU32,
+    pub n: NonZero<u32>,
 }
 
 pub struct BuiltinUnpermittedTypeInit<'a> {