Auto merge of #1820 - Aaron1011:rustup-const-err, r=RalfJung

Rustup for const_err changes

rust-version

@@ -1 +1 @@
-ce0d64e03ef9875e0935bb60e989542b7ec29579
+d9feaaa548ce380159a1de68f4f6e605db9a9fc5

src/diagnostics.rs

@@ -84,8 +84,10 @@ pub fn report_error<'tcx, 'mir>(
                     "resource exhaustion",
                 InvalidProgram(InvalidProgramInfo::ReferencedConstant) =>
                     "post-monomorphization error",
-                _ =>
-                    bug!("This error should be impossible in Miri: {}", e),
+                InvalidProgram(InvalidProgramInfo::AlreadyReported(_)) =>
+                    "error occurred",
+                kind =>
+                    bug!("This error should be impossible in Miri: {:?}", kind),
             };
             #[rustfmt::skip]
             let helps = match e.kind() {

tests/compile-fail/erroneous_const.rs

@@ -8,13 +8,12 @@
 
 struct PrintName<T>(T);
 impl<T> PrintName<T> {
-    const VOID: ! = panic!(); //~WARN any use of this value will cause an error
-    //~^ WARN this was previously accepted
+    const VOID: ! = panic!(); //~ERROR any use of this value will cause an error
 }
 
 fn no_codegen<T>() {
     if false {
-        let _ = PrintName::<T>::VOID; //~ERROR referenced constant has errors
+        let _ = PrintName::<T>::VOID; //~ERROR error occurred: encountered constant
     }
 }
 fn main() {