rename test case

the 3 is because the type arguments are in the 3rd position

Author: nikomatsakis

src/test/ui/nll/user-annotations/method-ufcs.rs renamed to src/test/ui/nll/user-annotations/method-ufcs-3.rs

@@ -1,5 +1,5 @@
 error[E0597]: `c` does not live long enough
-  --> $DIR/method-ufcs.rs:48:53
+  --> $DIR/method-ufcs-3.rs:48:53
    |
 LL |     <_ as Bazoom<_>>::method::<&'static u32>(&a, b, &c); //~ ERROR
    |                                                     ^^ borrowed value does not live long enough
@@ -9,29 +9,29 @@ LL | }
    = note: borrowed value must be valid for the static lifetime...
 
 error[E0597]: `c` does not live long enough
-  --> $DIR/method-ufcs.rs:55:48
+  --> $DIR/method-ufcs-3.rs:55:48
    |
 LL |     <_ as Bazoom<_>>::method::<&'a u32>(&a, b, &c); //~ ERROR
    |                                                ^^ borrowed value does not live long enough
 LL | }
    | - `c` dropped here while still borrowed
    |
 note: borrowed value must be valid for the lifetime 'a as defined on the function body at 51:35...
-  --> $DIR/method-ufcs.rs:51:35
+  --> $DIR/method-ufcs-3.rs:51:35
    |
 LL | fn annot_reference_named_lifetime<'a>(_d: &'a u32) {
    |                                   ^^
 
 error[E0597]: `c` does not live long enough
-  --> $DIR/method-ufcs.rs:69:52
+  --> $DIR/method-ufcs-3.rs:69:52
    |
 LL |         <_ as Bazoom<_>>::method::<&'a u32>(&a, b, &c); //~ ERROR
    |                                                    ^^ borrowed value does not live long enough
 LL |     };
    |     - `c` dropped here while still borrowed
    |
 note: borrowed value must be valid for the lifetime 'a as defined on the function body at 64:46...
-  --> $DIR/method-ufcs.rs:64:46
+  --> $DIR/method-ufcs-3.rs:64:46
    |
 LL | fn annot_reference_named_lifetime_in_closure<'a>(_: &'a u32) {
    |                                              ^^