5 files changed, 9 insertions, 9 deletions
diff --git a/src/libsyntax/diagnostics/plugin.rs b/src/libsyntax/diagnostics/plugin.rs
index d9d549f6841..d077fbd7bf0 100644
--- a/src/libsyntax/diagnostics/plugin.rs
+++ b/src/libsyntax/diagnostics/plugin.rs
@@ -63,7 +63,7 @@ pub fn expand_diagnostic_used<'cx>(ecx: &'cx mut ExtCtxt,
         ()
     });
     with_used_diagnostics(|diagnostics| {
-        match diagnostics.swap(code.name, span) {
+        match diagnostics.insert(code.name, span) {
             Some(previous_span) => {
                 ecx.span_warn(span, format!(
                     "diagnostic code {} already used", token::get_ident(code).get()
@@ -93,7 +93,7 @@ pub fn expand_register_diagnostic<'cx>(ecx: &'cx mut ExtCtxt,
         _ => unreachable!()
     };
     with_registered_diagnostics(|diagnostics| {
-        if !diagnostics.insert(code.name, description) {
+        if diagnostics.insert(code.name, description).is_some() {
             ecx.span_err(span, format!(
                 "diagnostic code {} already registered", token::get_ident(*code).get()
             ).as_slice());
diff --git a/src/libsyntax/ext/base.rs b/src/libsyntax/ext/base.rs
index 152b89b86e7..5401da8cd05 100644
--- a/src/libsyntax/ext/base.rs
+++ b/src/libsyntax/ext/base.rs
@@ -768,7 +768,7 @@ impl SyntaxEnv {
 
     pub fn find(&self, k: &Name) -> Option<Rc<SyntaxExtension>> {
         for frame in self.chain.iter().rev() {
-            match frame.map.find(k) {
+            match frame.map.get(k) {
                 Some(v) => return Some(v.clone()),
                 None => {}
             }
diff --git a/src/libsyntax/ext/format.rs b/src/libsyntax/ext/format.rs
index 486ce910e2b..a28f24e7663 100644
--- a/src/libsyntax/ext/format.rs
+++ b/src/libsyntax/ext/format.rs
@@ -252,7 +252,7 @@ impl<'a, 'b> Context<'a, 'b> {
             }
 
             Named(name) => {
-                let span = match self.names.find(&name) {
+                let span = match self.names.get(&name) {
                     Some(e) => e.span,
                     None => {
                         let msg = format!("there is no argument named `{}`", name);
@@ -260,7 +260,7 @@ impl<'a, 'b> Context<'a, 'b> {
                         return;
                     }
                 };
-                self.verify_same(span, &ty, self.name_types.find(&name));
+                self.verify_same(span, &ty, self.name_types.get(&name));
                 if !self.name_types.contains_key(&name) {
                     self.name_types.insert(name.clone(), ty);
                 }
@@ -555,11 +555,11 @@ impl<'a, 'b> Context<'a, 'b> {
             heads.push(self.ecx.expr_addr_of(e.span, e));
         }
         for name in self.name_ordering.iter() {
-            let e = match self.names.pop(name) {
+            let e = match self.names.remove(name) {
                 Some(e) => e,
                 None => continue
             };
-            let arg_ty = match self.name_types.find(name) {
+            let arg_ty = match self.name_types.get(name) {
                 Some(ty) => ty,
                 None => continue
             };
diff --git a/src/libsyntax/ext/mtwt.rs b/src/libsyntax/ext/mtwt.rs
index bebe16286c9..15fe7fc42b2 100644
--- a/src/libsyntax/ext/mtwt.rs
+++ b/src/libsyntax/ext/mtwt.rs
@@ -182,7 +182,7 @@ fn resolve_internal(id: Ident,
                     resolve_table: &mut ResolveTable) -> Name {
     let key = (id.name, id.ctxt);
 
-    match resolve_table.find(&key) {
+    match resolve_table.get(&key) {
         Some(&name) => return name,
         None => {}
     }
diff --git a/src/libsyntax/util/interner.rs b/src/libsyntax/util/interner.rs
index e6c98a9e3d0..bc6d6d7a521 100644
--- a/src/libsyntax/util/interner.rs
+++ b/src/libsyntax/util/interner.rs
@@ -45,7 +45,7 @@ impl<T: Eq + Hash + Clone + 'static> Interner<T> {
 
     pub fn intern(&self, val: T) -> Name {
         let mut map = self.map.borrow_mut();
-        match (*map).find(&val) {
+        match (*map).get(&val) {
             Some(&idx) => return idx,
             None => (),
         }