test that fudging with opaque types is the same in the new solver

Author: oli-obk

tests/ui/impl-trait/hidden-type-is-opaque-2.stderr renamed to tests/ui/impl-trait/hidden-type-is-opaque-2.default.stderr

@@ -1,5 +1,5 @@
 error[E0282]: type annotations needed
-  --> $DIR/hidden-type-is-opaque-2.rs:8:17
+  --> $DIR/hidden-type-is-opaque-2.rs:10:17
    |
 LL |     Thunk::new(|mut cont| {
    |                 ^^^^^^^^
@@ -13,7 +13,7 @@ LL |     Thunk::new(|mut cont: /* Type */| {
    |                         ++++++++++++
 
 error[E0282]: type annotations needed
-  --> $DIR/hidden-type-is-opaque-2.rs:18:17
+  --> $DIR/hidden-type-is-opaque-2.rs:20:17
    |
 LL |     Thunk::new(|mut cont| {
    |                 ^^^^^^^^

tests/ui/impl-trait/hidden-type-is-opaque-2.next.stderr

@@ -0,0 +1,31 @@
+error[E0282]: type annotations needed
+  --> $DIR/hidden-type-is-opaque-2.rs:10:17
+   |
+LL |     Thunk::new(|mut cont| {
+   |                 ^^^^^^^^
+LL |
+LL |         cont.reify_as();
+   |         ---- type must be known at this point
+   |
+help: consider giving this closure parameter an explicit type
+   |
+LL |     Thunk::new(|mut cont: /* Type */| {
+   |                         ++++++++++++
+
+error[E0282]: type annotations needed
+  --> $DIR/hidden-type-is-opaque-2.rs:20:17
+   |
+LL |     Thunk::new(|mut cont| {
+   |                 ^^^^^^^^
+LL |
+LL |         cont.reify_as();
+   |         ---- type must be known at this point
+   |
+help: consider giving this closure parameter an explicit type
+   |
+LL |     Thunk::new(|mut cont: /* Type */| {
+   |                         ++++++++++++
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0282`.

tests/ui/impl-trait/hidden-type-is-opaque-2.rs

@@ -1,6 +1,8 @@
 // This doesn't work, because we don't flow information from opaque types
 // into function arguments via the function's generic parameters
 // FIXME(oli-obk): make `expected_inputs_for_expected_output` support this
+//@ revisions: default next
+//@[next] compile-flags: -Znext-solver
 
 #![feature(type_alias_impl_trait)]