Fix tests

Author: sanxiyn

src/libcoretest/any.rs

@@ -121,7 +121,7 @@ fn any_fixed_vec() {
 
 #[test]
 fn any_unsized() {
-    fn is_any<T: Any + ?Sized>() {}
+    fn is_any<_T: Any + ?Sized>() {}
     is_any::<[i32]>();
 }
 

src/libserialize/serialize.rs

@@ -674,8 +674,8 @@ pub trait SpecializationError {
     /// `T` is the type being encoded/decoded, and
     /// the arguments are the names of the trait
     /// and method that should've been overriden.
-    fn not_found<S, T: ?Sized>(trait_name: &'static str,
-                               method_name: &'static str) -> Self;
+    fn not_found<_S, _T: ?Sized>(trait_name: &'static str,
+                                 method_name: &'static str) -> Self;
 }
 
 impl<E> SpecializationError for E {

src/libstd/fs.rs

@@ -2684,7 +2684,7 @@ mod tests {
 
     #[test]
     fn _assert_send_sync() {
-        fn _assert_send_sync<T: Send + Sync>() {}
+        fn _assert_send_sync<_T: Send + Sync>() {}
         _assert_send_sync::<OpenOptions>();
     }
 

src/libstd/sys_common/thread_local.rs

@@ -235,8 +235,8 @@ impl Drop for Key {
 mod tests {
     use super::{Key, StaticKey};
 
-    fn assert_sync<T: Sync>() {}
-    fn assert_send<T: Send>() {}
+    fn assert_sync<_T: Sync>() {}
+    fn assert_send<_T: Send>() {}
 
     #[test]
     fn smoke() {

src/libsyntax/ast.rs

@@ -1981,7 +1981,7 @@ mod tests {
     // are ASTs encodable?
     #[test]
     fn check_asts_encodable() {
-        fn assert_encodable<T: serialize::Encodable>() {}
+        fn assert_encodable<_T: serialize::Encodable>() {}
         assert_encodable::<Crate>();
     }
 }

src/test/ui/compare-method/proj-outlives-region.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 #![allow(dead_code)]
+#![allow(unused_type_parameters)]
 #![deny(extra_requirement_in_impl)]
 
 // Test that we elaborate `Type: 'region` constraints and infer various important things.

src/test/ui/compare-method/proj-outlives-region.stderr

@@ -1,18 +1,18 @@
 error[E0276]: impl has stricter requirements than trait
-  --> $DIR/proj-outlives-region.rs:22:5
+  --> $DIR/proj-outlives-region.rs:23:5
    |
-17 |     fn foo() where T: 'a;
+18 |     fn foo() where T: 'a;
    |     --------------------- definition of `foo` from trait
 ...
-22 |     fn foo() where U: 'a { } //~ ERROR E0276
+23 |     fn foo() where U: 'a { } //~ ERROR E0276
    |     ^^^^^^^^^^^^^^^^^^^^^^^^ impl has extra requirement `U: 'a`
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #37166 <https://github.com/rust-lang/rust/issues/37166>
 note: lint level defined here
-  --> $DIR/proj-outlives-region.rs:12:9
+  --> $DIR/proj-outlives-region.rs:13:9
    |
-12 | #![deny(extra_requirement_in_impl)]
+13 | #![deny(extra_requirement_in_impl)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: aborting due to previous error

src/test/ui/compare-method/region-unrelated.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 #![allow(dead_code)]
+#![allow(unused_type_parameters)]
 #![deny(extra_requirement_in_impl)]
 
 // Test that we elaborate `Type: 'region` constraints and infer various important things.

src/test/ui/compare-method/region-unrelated.stderr

@@ -1,18 +1,18 @@
 error[E0276]: impl has stricter requirements than trait
-  --> $DIR/region-unrelated.rs:22:5
+  --> $DIR/region-unrelated.rs:23:5
    |
-17 |     fn foo() where T: 'a;
+18 |     fn foo() where T: 'a;
    |     --------------------- definition of `foo` from trait
 ...
-22 |     fn foo() where V: 'a { }
+23 |     fn foo() where V: 'a { }
    |     ^^^^^^^^^^^^^^^^^^^^^^^^ impl has extra requirement `V: 'a`
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #37166 <https://github.com/rust-lang/rust/issues/37166>
 note: lint level defined here
-  --> $DIR/region-unrelated.rs:12:9
+  --> $DIR/region-unrelated.rs:13:9
    |
-12 | #![deny(extra_requirement_in_impl)]
+13 | #![deny(extra_requirement_in_impl)]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: aborting due to previous error