diff --git a/src/libcollectionstest/string.rs b/src/libcollectionstest/string.rs
index 69553bff0e17c..89df77d074fdc 100644
--- a/src/libcollectionstest/string.rs
+++ b/src/libcollectionstest/string.rs
@@ -264,7 +264,7 @@ fn test_str_add() {
 
 #[test]
 fn remove() {
-    let mut s = "ศไทย中华Việt Nam; foobar".to_string();;
+    let mut s = "ศไทย中华Việt Nam; foobar".to_string();
     assert_eq!(s.remove(0), 'ศ');
     assert_eq!(s.len(), 33);
     assert_eq!(s, "ไทย中华Việt Nam; foobar");
diff --git a/src/librustc/metadata/loader.rs b/src/librustc/metadata/loader.rs
index 99d1eaebdb251..77092d0802fb3 100644
--- a/src/librustc/metadata/loader.rs
+++ b/src/librustc/metadata/loader.rs
@@ -726,7 +726,7 @@ fn get_metadata_section(target: &Target, filename: &Path)
         ret = Some(get_metadata_section_imp(target, filename));
     });
     info!("reading {:?} => {:?}", filename.file_name().unwrap(), dur);
-    return ret.unwrap();;
+    ret.unwrap()
 }
 
 fn get_metadata_section_imp(target: &Target, filename: &Path)
diff --git a/src/librustc/middle/traits/error_reporting.rs b/src/librustc/middle/traits/error_reporting.rs
index 43b3831604bbf..a54818b2b5369 100644
--- a/src/librustc/middle/traits/error_reporting.rs
+++ b/src/librustc/middle/traits/error_reporting.rs
@@ -216,7 +216,7 @@ pub fn report_selection_error<'a, 'tcx>(infcx: &InferCtxt<'a, 'tcx>,
                     is_warning, infcx.tcx.sess, obligation.cause.span, E0276,
                     "the requirement `{}` appears on the impl \
                      method but not on the corresponding trait method",
-                    obligation.predicate);;
+                    obligation.predicate);
             } else {
                 match obligation.predicate {
                     ty::Predicate::Trait(ref trait_predicate) => {
@@ -455,7 +455,7 @@ pub fn maybe_report_ambiguity<'a, 'tcx>(infcx: &InferCtxt<'a, 'tcx>,
             if !infcx.tcx.sess.has_errors() {
                 span_err!(infcx.tcx.sess, obligation.cause.span, E0284,
                         "type annotations required: cannot resolve `{}`",
-                        predicate);;
+                        predicate);
                 note_obligation_cause(infcx, obligation);
             }
         }
diff --git a/src/test/run-pass/borrowck-rvalues-mutable.rs b/src/test/run-pass/borrowck-rvalues-mutable.rs
index 045e8d952adaa..93cb0cb0af23a 100644
--- a/src/test/run-pass/borrowck-rvalues-mutable.rs
+++ b/src/test/run-pass/borrowck-rvalues-mutable.rs
@@ -39,5 +39,5 @@ pub fn main() {
     assert_eq!(v, 22);
 
     let v = Counter::new(22).inc().inc().get();
-    assert_eq!(v, 24);;
+    assert_eq!(v, 24);
 }