Fix warnings

src/lib.rs

@@ -3,8 +3,10 @@
 #![feature(naked_functions)]
 // lang_items is an internal feature. `internal_features` lint is added recently
 // so also allow unknown lints to prevent warning in older nightly versions.
-#![allow(unknown_lints)]
-#![allow(internal_features)]
+#![cfg_attr(
+    any(feature = "personality", feature = "personality-dummy"),
+    allow(internal_features)
+)]
 #![cfg_attr(
     any(feature = "personality", feature = "personality-dummy"),
     feature(lang_items)

src/util.rs

@@ -25,7 +25,7 @@ pub use libc::c_int;
 pub type c_int = i32;
 
 #[cfg(all(
-    any(feature = "panicking", feature = "panic-handler-dummy"),
+    any(feature = "panic", feature = "panic-handler-dummy"),
     feature = "libc"
 ))]
 pub fn abort() -> ! {
@@ -33,7 +33,7 @@ pub fn abort() -> ! {
 }
 
 #[cfg(all(
-    any(feature = "panicking", feature = "panic-handler-dummy"),
+    any(feature = "panic", feature = "panic-handler-dummy"),
     not(feature = "libc")
 ))]
 pub fn abort() -> ! {