Fix tests

Author: saethlin

tests/ui/consts/const-eval/issue-50814.stderr

@@ -10,6 +10,14 @@ note: erroneous constant encountered
 LL |     &Sum::<U8, U8>::MAX
    |      ^^^^^^^^^^^^^^^^^^
 
+note: erroneous constant encountered
+  --> $DIR/issue-50814.rs:21:6
+   |
+LL |     &Sum::<U8, U8>::MAX
+   |      ^^^^^^^^^^^^^^^^^^
+   |
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+
 error[E0080]: evaluation of `<Sum<U8, U8> as Unsigned>::MAX` failed
   --> $DIR/issue-50814.rs:15:21
    |

tests/ui/layout/post-mono-layout-cycle.rs

@@ -1,5 +1,6 @@
 //@ build-fail
-//~^ cycle detected when computing layout of `Wrapper<()>`
+//~^ ERROR: cycle detected when computing layout of
+//~| ERROR: cycle detected when computing layout of
 
 trait Trait {
     type Assoc;

tests/ui/layout/post-mono-layout-cycle.stderr

@@ -6,11 +6,25 @@ error[E0391]: cycle detected when computing layout of `Wrapper<()>`
    = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
 
 note: the above error was encountered while instantiating `fn indirect::<()>`
-  --> $DIR/post-mono-layout-cycle.rs:23:5
+  --> $DIR/post-mono-layout-cycle.rs:24:5
    |
 LL |     indirect::<()>();
    |     ^^^^^^^^^^^^^^^^
 
-error: aborting due to 1 previous error
+error[E0391]: cycle detected when computing layout of `Wrapper<()>`
+   |
+   = note: ...which requires computing layout of `<() as Trait>::Assoc`...
+   = note: ...which again requires computing layout of `Wrapper<()>`, completing the cycle
+   = note: cycle used when computing layout of `core::option::Option<Wrapper<()>>`
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
+
+note: the above error was encountered while instantiating `fn abi::<()>`
+  --> $DIR/post-mono-layout-cycle.rs:20:5
+   |
+LL |     abi::<T>(None);
+   |     ^^^^^^^^^^^^^^
+
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0391`.