diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs
index de25baf5b14..95afbbe01db 100644
--- a/compiler/rustc_lint/src/builtin.rs
+++ b/compiler/rustc_lint/src/builtin.rs
@@ -577,16 +577,12 @@ impl MissingDoc {
         let attrs = cx.tcx.hir().attrs(cx.tcx.hir().local_def_id_to_hir_id(def_id));
         let has_doc = attrs.iter().any(has_doc);
         if !has_doc {
-            cx.struct_span_lint(
-                MISSING_DOCS,
-                cx.tcx.sess.source_map().guess_head_span(sp),
-                |lint| {
-                    lint.build(fluent::lint::builtin_missing_doc)
-                        .set_arg("article", article)
-                        .set_arg("desc", desc)
-                        .emit();
-                },
-            );
+            cx.struct_span_lint(MISSING_DOCS, cx.tcx.def_span(def_id), |lint| {
+                lint.build(fluent::lint::builtin_missing_doc)
+                    .set_arg("article", article)
+                    .set_arg("desc", desc)
+                    .emit();
+            });
         }
     }
 }
diff --git a/src/test/mir-opt/unusual_item_types.Test-X-{constructor#0}.mir_map.0.32bit.mir b/src/test/mir-opt/unusual_item_types.Test-X-{constructor#0}.mir_map.0.32bit.mir
index d106da84fc7..028281ba450 100644
--- a/src/test/mir-opt/unusual_item_types.Test-X-{constructor#0}.mir_map.0.32bit.mir
+++ b/src/test/mir-opt/unusual_item_types.Test-X-{constructor#0}.mir_map.0.32bit.mir
@@ -1,12 +1,12 @@
 // MIR for `Test::X` 0 mir_map
 
 fn Test::X(_1: usize) -> Test {
-    let mut _0: Test;                    // return place in scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
+    let mut _0: Test;                    // return place in scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
 
     bb0: {
-        Deinit(_0);                      // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
-        ((_0 as X).0: usize) = move _1;  // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
-        discriminant(_0) = 0;            // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
-        return;                          // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
+        Deinit(_0);                      // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
+        ((_0 as X).0: usize) = move _1;  // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
+        discriminant(_0) = 0;            // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
+        return;                          // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
     }
 }
diff --git a/src/test/mir-opt/unusual_item_types.Test-X-{constructor#0}.mir_map.0.64bit.mir b/src/test/mir-opt/unusual_item_types.Test-X-{constructor#0}.mir_map.0.64bit.mir
index d106da84fc7..028281ba450 100644
--- a/src/test/mir-opt/unusual_item_types.Test-X-{constructor#0}.mir_map.0.64bit.mir
+++ b/src/test/mir-opt/unusual_item_types.Test-X-{constructor#0}.mir_map.0.64bit.mir
@@ -1,12 +1,12 @@
 // MIR for `Test::X` 0 mir_map
 
 fn Test::X(_1: usize) -> Test {
-    let mut _0: Test;                    // return place in scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
+    let mut _0: Test;                    // return place in scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
 
     bb0: {
-        Deinit(_0);                      // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
-        ((_0 as X).0: usize) = move _1;  // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
-        discriminant(_0) = 0;            // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
-        return;                          // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:13
+        Deinit(_0);                      // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
+        ((_0 as X).0: usize) = move _1;  // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
+        discriminant(_0) = 0;            // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
+        return;                          // scope 0 at $DIR/unusual-item-types.rs:16:5: 16:6
     }
 }
diff --git a/src/tools/clippy/tests/ui/crashes/ice-6252.stderr b/src/tools/clippy/tests/ui/crashes/ice-6252.stderr
index a6a767483ed..a1e37e7317b 100644
--- a/src/tools/clippy/tests/ui/crashes/ice-6252.stderr
+++ b/src/tools/clippy/tests/ui/crashes/ice-6252.stderr
@@ -28,7 +28,7 @@ LL |     const VAL: T;
    |     ------------ `VAL` from trait
 ...
 LL | impl<N, M> TypeVal<usize> for Multiply<N, M> where N: TypeVal<VAL> {}
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `VAL` in implementation
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `VAL` in implementation
 
 error: constant expression depends on a generic parameter
   --> $DIR/ice-6252.rs:13:9