Update error messages for E0091 and E0092

src/librustc_typeck/check/intrinsic.rs

@@ -97,8 +97,10 @@ pub fn check_intrinsic_type(ccx: &CrateCtxt, it: &hir::ForeignItem) {
                 (0, Vec::new(), tcx.mk_nil())
             }
             op => {
-                span_err!(tcx.sess, it.span, E0092,
-                    "unrecognized atomic operation function: `{}`", op);
+                struct_span_err!(tcx.sess, it.span, E0092,
+                      "unrecognized atomic operation function: `{}`", op)
+                  .span_label(it.span, &format!("unrecognized atomic operation"))
+                  .emit();
                 return;
             }
         };

src/librustc_typeck/check/mod.rs

@@ -4637,9 +4637,11 @@ pub fn check_bounds_are_used<'a, 'tcx>(ccx: &CrateCtxt<'a, 'tcx>,
 
     for (i, b) in tps_used.iter().enumerate() {
         if !*b {
-            span_err!(ccx.tcx.sess, tps[i].span, E0091,
+            struct_span_err!(ccx.tcx.sess, tps[i].span, E0091,
                 "type parameter `{}` is unused",
-                tps[i].name);
+                tps[i].name)
+                .span_label(tps[i].span, &format!("unused type parameter"))
+                .emit();
         }
     }
 }

src/test/compile-fail/E0091.rs

@@ -9,7 +9,9 @@
 // except according to those terms.
 
 type Foo<T> = u32; //~ ERROR E0091
+                   //~| NOTE unused type parameter
 type Foo2<A, B> = Box<A>; //~ ERROR E0091
+                          //~| NOTE unused type parameter
 
 fn main() {
 }