Rebased with master.

Author: ysiraichi

src/librustc_traits/normalize_projection_ty.rs

@@ -36,7 +36,7 @@ crate fn normalize_projection_ty<'tcx>(
         ) = infcx.instantiate_canonical_with_fresh_inference_vars(DUMMY_SP, &goal);
         let fulfill_cx = &mut FulfillmentContext::new();
         let selcx = &mut SelectionContext::new(infcx);
-        let cause = ObligationCause::misc(DUMMY_SP, DUMMY_NODE_ID);
+        let cause = ObligationCause::misc(DUMMY_SP, DUMMY_NODE_ID, DUMMY_NODE_ID);
         let Normalized {
             value: answer,
             obligations,

src/librustc_typeck/check/dropck.rs

@@ -298,7 +298,7 @@ pub fn check_safety_of_destructor_if_necessary<'a, 'gcx, 'tcx>(
     };
     let parent_scope = rcx.tcx.mk_region(ty::ReScope(parent_scope));
     let origin = || infer::SubregionOrigin::SafeDestructor(span);
-    let cause = &ObligationCause::misc(span, body_id);
+    let cause = &ObligationCause::misc(span, body_id, body_id);
     let infer_ok = rcx.infcx.at(cause, rcx.fcx.param_env).dropck_outlives(ty);
     debug!("dropck_outlives = {:#?}", infer_ok);
     let kinds = rcx.fcx.register_infer_ok_obligations(infer_ok);

src/test/ui/suggest-remove-refs-1.stderr

@@ -12,4 +12,4 @@ LL |     for (i, n) in &v.iter().enumerate() {
 
 error: aborting due to previous error
 
-If you want more information on this error, try using "rustc --explain E0277"
+For more information about this error, try `rustc --explain E0277`.

src/test/ui/suggest-remove-refs-2.stderr

@@ -12,4 +12,4 @@ LL |     for (i, n) in & & & & &v.iter().enumerate() {
 
 error: aborting due to previous error
 
-If you want more information on this error, try using "rustc --explain E0277"
+For more information about this error, try `rustc --explain E0277`.

src/test/ui/suggest-remove-refs-3.stderr

@@ -19,4 +19,4 @@ LL |         .enumerate() {
 
 error: aborting due to previous error
 
-If you want more information on this error, try using "rustc --explain E0277"
+For more information about this error, try `rustc --explain E0277`.