1 files changed, 8 insertions, 2 deletions
diff --git a/compiler/rustc_passes/src/diagnostic_items.rs b/compiler/rustc_passes/src/diagnostic_items.rs
index 7b02aecdfae..323b414cca0 100644
--- a/compiler/rustc_passes/src/diagnostic_items.rs
+++ b/compiler/rustc_passes/src/diagnostic_items.rs
@@ -79,8 +79,14 @@ fn all_diagnostic_items(tcx: TyCtxt<'_>, (): ()) -> DiagnosticItems {
     // Initialize the collector.
     let mut items = DiagnosticItems::default();
 
-    // Collect diagnostic items in other crates.
-    for &cnum in tcx.crates(()).iter().chain(std::iter::once(&LOCAL_CRATE)) {
+    // Collect diagnostic items in visible crates.
+    for cnum in tcx
+        .crates(())
+        .iter()
+        .copied()
+        .filter(|cnum| tcx.is_user_visible_dep(*cnum))
+        .chain(std::iter::once(LOCAL_CRATE))
+    {
         for (&name, &def_id) in &tcx.diagnostic_items(cnum).name_to_id {
             collect_item(tcx, &mut items, name, def_id);
         }