Fix some merge conflicts

Author: nikomatsakis

src/librustc/middle/ty.rs

@@ -7772,7 +7772,7 @@ impl<'tcx> fmt::Debug for ObjectLifetimeDefault {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match *self {
             ObjectLifetimeDefault::Ambiguous => write!(f, "Ambiguous"),
-            ObjectLifetimeDefault::BaseDefault => format!("BaseDefault"),
+            ObjectLifetimeDefault::BaseDefault => write!(f, "BaseDefault"),
             ObjectLifetimeDefault::Specific(ref r) => write!(f, "{:?}", r),
         }
     }

src/librustc/util/ppaux.rs

@@ -291,17 +291,18 @@ impl<'tcx> fmt::Display for ty::TraitTy<'tcx> {
             try!(write!(f, " + {:?}", bound));
         }
 
-        // Region, if not obviously implied by builtin bounds.
-        if bounds.region_bound != ty::ReStatic {
-            // Region bound is implied by builtin bounds:
-            let bound = bounds.region_bound.to_string();
-            if !bound.is_empty() {
-                try!(write!(f, " + {}", bound));
-            }
+        // FIXME: It'd be nice to compute from context when this bound
+        // is implied, but that's non-trivial -- we'd perhaps have to
+        // use thread-local data of some kind? There are also
+        // advantages to just showing the region, since it makes
+        // people aware that it's there.
+        let bound = bounds.region_bound.to_string();
+        if !bound.is_empty() {
+            try!(write!(f, " + {}", bound));
         }
 
-        if bounds.region_bound_will_change && tcx.sess.verbose() {
-            components.push(format!("WILL-CHANGE"));
+        if bounds.region_bound_will_change && verbose() {
+            try!(write!(f, " [WILL-CHANGE]"));
         }
 
         Ok(())

src/test/compile-fail/object-lifetime-default.rs

@@ -29,6 +29,6 @@ struct E<'a,'b:'a,T:'b>(&'a T, &'b T); //~ ERROR 'b
 struct F<'a,'b,T:'a,U:'b>(&'a T, &'b U); //~ ERROR 'a,'b
 
 #[rustc_object_lifetime_default]
-struct G<'a,'b,T:'a,U:'a+'b>(&'a T, &'b U); //~ ERROR 'a,Some(Ambiguous)
+struct G<'a,'b,T:'a,U:'a+'b>(&'a T, &'b U); //~ ERROR 'a,Ambiguous
 
 fn main() { }