Include attributes in removal span for unused imports.

compiler/rustc_resolve/src/check_unused.rs

@@ -98,7 +98,7 @@ impl<'a, 'b> UnusedImportCheckVisitor<'a, 'b> {
 
 impl<'a, 'b> Visitor<'a> for UnusedImportCheckVisitor<'a, 'b> {
     fn visit_item(&mut self, item: &'a ast::Item) {
-        self.item_span = item.span;
+        self.item_span = item.span_with_attributes();
 
         // Ignore is_public import statements because there's no way to be sure
         // whether they're used or not. Also ignore imports with a dummy span

src/test/ui/imports/unused-import-issue-87973.fixed

@@ -0,0 +1,8 @@
+// run-rustfix
+#![deny(unused_imports)]
+
+// Check that attributes get removed too. See #87973.
+
+//~^ ERROR unused import
+
+fn main() {}

src/test/ui/imports/unused-import-issue-87973.rs

@@ -0,0 +1,11 @@
+// run-rustfix
+#![deny(unused_imports)]
+
+// Check that attributes get removed too. See #87973.
+#[deprecated]
+#[allow(unsafe_code)]
+#[cfg(not(foo))]
+use std::fs;
+//~^ ERROR unused import
+
+fn main() {}

src/test/ui/imports/unused-import-issue-87973.stderr

@@ -0,0 +1,14 @@
+error: unused import: `std::fs`
+  --> $DIR/unused-import-issue-87973.rs:8:5
+   |
+LL | use std::fs;
+   |     ^^^^^^^
+   |
+note: the lint level is defined here
+  --> $DIR/unused-import-issue-87973.rs:2:9
+   |
+LL | #![deny(unused_imports)]
+   |         ^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+