Add more detail to type inference error

When encountering code where type inference fails, add more actionable
information:

```
fn main() {
    let foo = Vec::new();
}
```

```
error[E0282]: type annotations needed for `std::vec::Vec<_>`
  --> $DIR/vector-no-ann.rs:2:16
   |
LL |     let foo = Vec::new();
   |         ---   ^^^^^^^^ cannot infer type for `T`
   |         |
   |         consider giving `foo` the type `std::vec::Vec<_>` with the type parameter `T` specified
```

We still need to modify type printing to optionally accept a
`TypeVariableTable` in order to properly print `std::vec::Vec<T>`.

CC #25633.

src/test/ui/issues/issue-12187-1.rs

@@ -4,5 +4,5 @@ fn new<T>() -> &'static T {
 
 fn main() {
     let &v = new();
-    //~^ ERROR type annotations needed [E0282]
+    //~^ ERROR type annotations needed
 }

src/test/ui/issues/issue-12187-1.stderr

@@ -1,4 +1,4 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `&_`
   --> $DIR/issue-12187-1.rs:6:10
    |
 LL |     let &v = new();

src/test/ui/issues/issue-12187-2.rs

@@ -4,5 +4,5 @@ fn new<'r, T>() -> &'r T {
 
 fn main() {
     let &v = new();
-    //~^ ERROR type annotations needed [E0282]
+    //~^ ERROR type annotations needed
 }

src/test/ui/issues/issue-12187-2.stderr

@@ -1,4 +1,4 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `&_`
   --> $DIR/issue-12187-2.rs:6:10
    |
 LL |     let &v = new();

src/test/ui/issues/issue-17551.stderr

@@ -1,10 +1,10 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `B<_>`
   --> $DIR/issue-17551.rs:6:15
    |
 LL |     let foo = B(marker::PhantomData);
    |         ---   ^ cannot infer type for `T`
    |         |
-   |         consider giving `foo` a type
+   |         consider giving `foo` the type `B<_>` with the type parameter `T` specified
 
 error: aborting due to previous error
 

src/test/ui/issues/issue-20261.stderr

@@ -1,4 +1,4 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `&(_,)`
   --> $DIR/issue-20261.rs:4:11
    |
 LL |     for (ref i,) in [].iter() {

src/test/ui/issues/issue-23046.stderr

@@ -1,8 +1,8 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `Expr<'_, _>`
   --> $DIR/issue-23046.rs:17:15
    |
 LL |     let ex = |x| {
-   |               ^ consider giving this closure parameter a type
+   |               ^ consider giving this closure parameter the type `Expr<'_, _>` with the type parameter `VAR` specified
 
 error: aborting due to previous error
 

src/test/ui/issues/issue-25368.stderr

@@ -1,4 +1,4 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `(std::sync::mpsc::Sender<Foo<_>>, std::sync::mpsc::Receiver<Foo<_>>)`
   --> $DIR/issue-25368.rs:11:17
    |
 LL |     let (tx, rx) = channel();

src/test/ui/issues/issue-7813.stderr

@@ -1,10 +1,10 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `&[_; 0]`
   --> $DIR/issue-7813.rs:2:13
    |
 LL |     let v = &[];
    |         -   ^^^ cannot infer type
    |         |
-   |         consider giving `v` a type
+   |         consider giving `v` the type `&[_; 0]` with the type parameter `_` specified
 
 error: aborting due to previous error
 

src/test/ui/methods/method-ambig-one-trait-unknown-int-type.rs

@@ -22,7 +22,7 @@ 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 needed [E0282]
+    //~^ ERROR type annotations needed
     x.foo();
 }
 

src/test/ui/methods/method-ambig-one-trait-unknown-int-type.stderr

@@ -1,10 +1,10 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `std::vec::Vec<_>`
   --> $DIR/method-ambig-one-trait-unknown-int-type.rs:24:17
    |
 LL |     let mut x = Vec::new();
    |         -----   ^^^^^^^^ cannot infer type for `T`
    |         |
-   |         consider giving `x` a type
+   |         consider giving `x` the type `std::vec::Vec<_>` with the type parameter `T` specified
 
 error[E0308]: mismatched types
   --> $DIR/method-ambig-one-trait-unknown-int-type.rs:33:20

src/test/ui/span/issue-42234-unknown-receiver-type.stderr

@@ -1,8 +1,8 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `std::option::Option<_>`
   --> $DIR/issue-42234-unknown-receiver-type.rs:7:5
    |
 LL |     let x: Option<_> = None;
-   |         - consider giving `x` a type
+   |         - consider giving `x` the type `std::option::Option<_>` with the type parameter `T` specified
 LL |     x.unwrap().method_that_could_exist_on_some_type();
    |     ^^^^^^^^^^ cannot infer type for `T`
    |

src/test/ui/type/type-check/cannot_infer_local_or_array.stderr

@@ -1,10 +1,10 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `[_; 0]`
   --> $DIR/cannot_infer_local_or_array.rs:2:13
    |
 LL |     let x = [];
    |         -   ^^ cannot infer type
    |         |
-   |         consider giving `x` a type
+   |         consider giving `x` the type `[_; 0]` with the type parameter `_` specified
 
 error: aborting due to previous error
 

src/test/ui/type/type-check/cannot_infer_local_or_vec.stderr

@@ -1,10 +1,10 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `std::vec::Vec<_>`
   --> $DIR/cannot_infer_local_or_vec.rs:2:13
    |
 LL |     let x = vec![];
    |         -   ^^^^^^ cannot infer type for `T`
    |         |
-   |         consider giving `x` a type
+   |         consider giving `x` the type `std::vec::Vec<_>` with the type parameter `T` specified
    |
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 

src/test/ui/type/type-check/cannot_infer_local_or_vec_in_tuples.stderr

@@ -1,4 +1,4 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `(std::vec::Vec<_>,)`
   --> $DIR/cannot_infer_local_or_vec_in_tuples.rs:2:18
    |
 LL |     let (x, ) = (vec![], );

src/test/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-2.stderr

@@ -1,8 +1,8 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `std::option::Option<_>`
   --> $DIR/unboxed-closures-failed-recursive-fn-2.rs:16:32
    |
 LL |     let mut closure0 = None;
-   |         ------------ consider giving `closure0` a type
+   |         ------------ consider giving `closure0` the type `std::option::Option<_>` with the type parameter `_` specified
 ...
 LL |                         return c();
    |                                ^^^ cannot infer type

src/test/ui/vector-no-ann.rs

@@ -1,4 +1,4 @@
 fn main() {
     let _foo = Vec::new();
-    //~^ ERROR type annotations needed [E0282]
+    //~^ ERROR type annotations needed
 }

src/test/ui/vector-no-ann.stderr

@@ -1,10 +1,10 @@
-error[E0282]: type annotations needed
+error[E0282]: type annotations needed for `std::vec::Vec<_>`
   --> $DIR/vector-no-ann.rs:2:16
    |
 LL |     let _foo = Vec::new();
    |         ----   ^^^^^^^^ cannot infer type for `T`
    |         |
-   |         consider giving `_foo` a type
+   |         consider giving `_foo` the type `std::vec::Vec<_>` with the type parameter `T` specified
 
 error: aborting due to previous error