Update tests

src/test/ui/obsolete-in-place/bad.bad.stderr

@@ -1,18 +1,19 @@
-error: emplacement syntax is obsolete (for now, anyway)
-  --> $DIR/bad.rs:9:5
-   |
-LL |     x <- y;
-   |     ^^^^^^
-   |
-   = note: for more information, see <https://github.com/rust-lang/rust/issues/27779#issuecomment-378416911>
-
-error: emplacement syntax is obsolete (for now, anyway)
+error: expected expression, found keyword `in`
   --> $DIR/bad.rs:10:5
    |
 LL |     in(foo) { bar };
-   |     ^^^^^^^^^^^^^^^
+   |     ^^ expected expression
+
+error[E0282]: type annotations needed
+  --> $DIR/bad.rs:9:8
+   |
+LL |     let (x, y, foo, bar);
+   |         ---------------- consider giving the pattern a type
+LL |     x <- y;
+   |        ^^^ cannot infer type
    |
-   = note: for more information, see <https://github.com/rust-lang/rust/issues/27779#issuecomment-378416911>
+   = note: type must be known at this point
 
 error: aborting due to 2 previous errors
 
+For more information about this error, try `rustc --explain E0282`.

src/test/ui/obsolete-in-place/bad.rs

@@ -1,15 +1,7 @@
 // Check that `<-` and `in` syntax gets a hard error.
 
-// revisions: good bad
-//[good] run-pass
-
-#[cfg(bad)]
-fn main() {
-    let (x, y, foo, bar);
-    x <- y; //[bad]~ ERROR emplacement syntax is obsolete
-    in(foo) { bar }; //[bad]~ ERROR emplacement syntax is obsolete
-}
-
-#[cfg(good)]
 fn main() {
+    let (x, y, foo, bar) = (0, 0, 0, 0);
+    x <- y; // ok: parses as a comparison
+    in(foo) { bar }; //~ERROR expected expression, found keyword `in`
 }

src/test/ui/obsolete-in-place/bad.stderr

@@ -0,0 +1,8 @@
+error: expected expression, found keyword `in`
+  --> $DIR/bad.rs:6:5
+   |
+LL |     in(foo) { bar };
+   |     ^^ expected expression
+
+error: aborting due to previous error
+

src/test/ui/parser/if-in-in.stderr

@@ -5,9 +5,6 @@ LL |     for i in in 1..2 {
    |           ---^^
    |           |
    |           help: remove the duplicated `in`
-   |
-   = note: if you meant to use emplacement syntax, it is obsolete (for now, anyway)
-   = note: for more information on the status of emplacement syntax, see <https://github.com/rust-lang/rust/issues/27779#issuecomment-378416911>
 
 error: aborting due to previous error
 

src/test/ui/placement-syntax.rs

@@ -1,7 +1,8 @@
+// run-pass
+
 fn main() {
     let x = -5;
-    if x<-1 {
-    //~^ ERROR emplacement syntax is obsolete
+    if x<-1 { // ok: parses as a comparison
         println!("ok");
     }
 }