tests: work around fallout from normalizing signatures separately.

Author: eddyb

src/test/compile-fail/associated-types-path-2.rs

@@ -38,11 +38,13 @@ pub fn f1_int_uint() {
 pub fn f1_uint_uint() {
  f1(2u32, 4u32);
  //~^ ERROR `u32: Foo` is not satisfied
+ //~| ERROR `u32: Foo` is not satisfied
 }
 
 pub fn f1_uint_int() {
  f1(2u32, 4i32);
  //~^ ERROR `u32: Foo` is not satisfied
+ //~| ERROR `u32: Foo` is not satisfied
 }
 
 pub fn f2_int() {

src/test/compile-fail/on-unimplemented/multiple-impls.rs

@@ -44,12 +44,18 @@ fn main() {
  //~^ ERROR E0277
  //~| NOTE trait message
  //~| NOTE required by
+ //~| ERROR E0277
+ //~| NOTE trait message
  Index::index(&[] as &[i32], Foo(2u32));
  //~^ ERROR E0277
  //~| NOTE on impl for Foo
  //~| NOTE required by
+ //~| ERROR E0277
+ //~| NOTE on impl for Foo
  Index::index(&[] as &[i32], Bar(2u32));
  //~^ ERROR E0277
  //~| NOTE on impl for Bar
  //~| NOTE required by
+ //~| ERROR E0277
+ //~| NOTE on impl for Bar
 }

src/test/compile-fail/on-unimplemented/on-impl.rs

@@ -33,4 +33,6 @@ fn main() {
  //~^ ERROR E0277
  //~| NOTE a usize is required
  //~| NOTE required by
+ //~| ERROR E0277
+ //~| NOTE a usize is required
 }