Lint against usages of struct_span_lint_hir.

Author: crlf0710

Diff for: compiler/rustc_middle/src/ty/context.rs

@@ -2819,7 +2819,9 @@ impl<'tcx> TyCtxt<'tcx> {
         span: impl Into<MultiSpan>,
         decorator: impl for<'a> DecorateLint<'a, ()>,
     ) {
-        self.struct_span_lint_hir(lint, hir_id, span, decorator.msg(), |diag| {
+        let msg = decorator.msg();
+        let (level, src) = self.lint_level_at_node(lint, hir_id);
+        struct_lint_level(self.sess, lint, level, src, Some(span.into()), msg, |diag| {
             decorator.decorate_lint(diag)
         })
     }
@@ -2829,6 +2831,7 @@ impl<'tcx> TyCtxt<'tcx> {
     /// Return value of the `decorate` closure is ignored, see [`struct_lint_level`] for a detailed explanation.
     ///
     /// [`struct_lint_level`]: rustc_middle::lint::struct_lint_level#decorate-signature
+    #[rustc_lint_diagnostics]
     pub fn struct_span_lint_hir(
         self,
         lint: &'static Lint,

Diff for: compiler/rustc_passes/src/lib.rs

@@ -5,8 +5,6 @@
 //! This API is completely unstable and subject to change.
 
 #![allow(rustc::potential_query_instability)]
-#![deny(rustc::untranslatable_diagnostic)]
-#![deny(rustc::diagnostic_outside_of_impl)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
 #![feature(iter_intersperse)]
 #![feature(let_chains)]