test: Wrap long expected compile-fail messages for E0282

Author: ruuda

src/test/compile-fail/issue-12028.rs

@@ -36,7 +36,8 @@ trait StreamHash<H: StreamHasher>: Hash<H> {
 impl<H: StreamHasher> Hash<H> for u8 {
     fn hash2(&self, hasher: &H) -> u64 {
         let mut stream = hasher.stream();
-        self.input_stream(&mut stream); //~ ERROR type annotations or generic parameter binding required
+        self.input_stream(&mut stream);
+        //~^ ERROR type annotations or generic parameter binding required
         Stream::result(&stream)
     }
 }

src/test/compile-fail/issue-6458.rs

@@ -16,7 +16,8 @@ pub struct MyState;
 pub fn foo<State>(_: TypeWithState<State>) {}
 
 pub fn bar() {
-   foo(TypeWithState(marker::PhantomData));  //~ ERROR type annotations or generic parameter binding required
+   foo(TypeWithState(marker::PhantomData));
+   //~^ ERROR type annotations or generic parameter binding required
 }
 
 fn main() {

src/test/compile-fail/method-ambig-one-trait-unknown-int-type.rs

@@ -31,7 +31,8 @@ impl foo for Vec<isize> {
 
 fn m1() {
     // we couldn't infer the type of the vector just based on calling foo()...
-    let mut x = Vec::new(); //~ ERROR type annotations or generic parameter binding required
+    let mut x = Vec::new();
+    //~^ ERROR type annotations or generic parameter binding required
     x.foo();
 }
 

src/test/compile-fail/traits-multidispatch-convert-ambig-dest.rs

@@ -33,7 +33,8 @@ where T : Convert<U>
 }
 
 fn a() {
-    test(22, std::default::Default::default()); //~ ERROR type annotations or generic parameter binding required
+    test(22, std::default::Default::default());
+    //~^ ERROR type annotations or generic parameter binding required
 }
 
 fn main() {}

src/test/compile-fail/vector-no-ann.rs

@@ -10,5 +10,6 @@
 
 
 fn main() {
-    let _foo = Vec::new(); //~ ERROR type annotations or generic parameter binding required
+    let _foo = Vec::new();
+    //~^ ERROR type annotations or generic parameter binding required
 }