3 files changed, 3 insertions, 3 deletions
diff --git a/src/libsyntax/attr.rs b/src/libsyntax/attr.rs
index 56fe46251e9..ed52fbd0f5a 100644
--- a/src/libsyntax/attr.rs
+++ b/src/libsyntax/attr.rs
@@ -245,7 +245,7 @@ fn contains_name(metas: &[@ast::meta_item], name: &str) -> bool {
 }
 
 fn attrs_contains_name(attrs: &[ast::attribute], name: &str) -> bool {
-    vec::is_not_empty(find_attrs_by_name(attrs, name))
+    !find_attrs_by_name(attrs, name).is_empty()
 }
 
 fn first_attr_value_str_by_name(attrs: ~[ast::attribute], name: ~str)
diff --git a/src/libsyntax/diagnostic.rs b/src/libsyntax/diagnostic.rs
index c00b956f553..6112313cf48 100644
--- a/src/libsyntax/diagnostic.rs
+++ b/src/libsyntax/diagnostic.rs
@@ -192,7 +192,7 @@ fn diagnosticcolor(lvl: level) -> u8 {
 fn print_diagnostic(topic: ~str, lvl: level, msg: &str) {
     let use_color = term::color_supported() &&
         io::stderr().get_type() == io::Screen;
-    if str::is_not_empty(topic) {
+    if !topic.is_empty() {
         io::stderr().write_str(fmt!("%s ", topic));
     }
     if use_color {
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index 7183b623ef4..0bd08250617 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -2237,7 +2237,7 @@ impl Parser {
 
         fn check_expected_item(p: Parser, current_attrs: ~[attribute]) {
             // If we have attributes then we should have an item
-            if vec::is_not_empty(current_attrs) {
+            if !current_attrs.is_empty() {
                 p.fatal(~"expected item after attrs");
             }
         }