diff --git a/src/libcore/io.rs b/src/libcore/io.rs
index 63335f7e952c..a00de5ff3117 100644
--- a/src/libcore/io.rs
+++ b/src/libcore/io.rs
@@ -1528,14 +1528,17 @@ pub struct BytesWriter {
 impl Writer for BytesWriter {
     fn write(&self, v: &[u8]) {
         let v_len = v.len();
-        let bytes_len = vec::uniq_len(&const *self.bytes);
 
-        let count = uint::max(bytes_len, *self.pos + v_len);
-        vec::reserve(&mut *self.bytes, count);
+        let bytes = &mut *self.bytes;
+        let count = uint::max(bytes.len(), *self.pos + v_len);
+        vec::reserve(bytes, count);
 
         unsafe {
-            vec::raw::set_len(&mut *self.bytes, count);
-            let view = vec::mut_slice(*self.bytes, *self.pos, count);
+            // Silly stage0 borrow check workaround...
+            let casted: &mut ~[u8] = cast::transmute_copy(&bytes);
+            vec::raw::set_len(casted, count);
+
+            let view = vec::mut_slice(*bytes, *self.pos, count);
             vec::bytes::copy_memory(view, v, v_len);
         }
 
diff --git a/src/libcore/repr.rs b/src/libcore/repr.rs
index c7e20d2b21f7..a645a7e86807 100644
--- a/src/libcore/repr.rs
+++ b/src/libcore/repr.rs
@@ -457,7 +457,7 @@ impl TyVisitor for ReprVisitor {
         let disr = unsafe {
             get_disr(transmute(*self.ptr))
         };
-        self.var_stk.push(SearchingFor(disr));
+        var_stk.push(SearchingFor(disr));
         true
     }
 
@@ -494,7 +494,7 @@ impl TyVisitor for ReprVisitor {
                                 _offset: uint,
                                 inner: *TyDesc)
                                 -> bool {
-        match self.var_stk[vec::uniq_len(&const self.var_stk) - 1] {
+        match self.var_stk[vec::uniq_len(&const *self.var_stk) - 1] {
             Matched => {
                 if i != 0 {
                     self.writer.write_str(", ");
@@ -530,7 +530,7 @@ impl TyVisitor for ReprVisitor {
                         _align: uint)
                         -> bool {
         let var_stk: &mut ~[VariantState] = self.var_stk;
-        match self.var_stk.pop() {
+        match var_stk.pop() {
             SearchingFor(*) => fail!(~"enum value matched no variant"),
             _ => true
         }
diff --git a/src/librustc/middle/resolve_stage0.rs b/src/librustc/middle/resolve_stage0.rs
index 2773710ca98f..484f66ae9921 100644
--- a/src/librustc/middle/resolve_stage0.rs
+++ b/src/librustc/middle/resolve_stage0.rs
@@ -4718,7 +4718,7 @@ pub impl Resolver {
                       for vec::each(class_def.fields) |field| {
                         match field.node.kind {
                           unnamed_field => {},
-                          named_field(ident, _, _) => {
+                          named_field(ident, _) => {
                               if str::eq_slice(*this.session.str_of(ident),
                                                name) {
                                 return true
diff --git a/src/libstd/future.rs b/src/libstd/future.rs
index 209859e30961..eea9d56c9751 100644
--- a/src/libstd/future.rs
+++ b/src/libstd/future.rs
@@ -28,6 +28,13 @@ use core::pipes::recv;
 use core::task;
 
 #[doc = "The future type"]
+#[cfg(stage0)]
+pub struct Future<A> {
+    priv mut state: FutureState<A>,
+}
+
+#[doc = "The future type"]
+#[cfg(not(stage0))]
 pub struct Future<A> {
     priv state: FutureState<A>,
 }
diff --git a/src/libstd/net_tcp.rs b/src/libstd/net_tcp.rs
index e8c38be74c7d..560e91f13a72 100644
--- a/src/libstd/net_tcp.rs
+++ b/src/libstd/net_tcp.rs
@@ -902,8 +902,10 @@ impl io::Reader for TcpSocketBuf {
           // need to read in data from the socket. Note that the internal
           // buffer is of no use anymore as we read all bytes from it,
           // so we can throw it away.
-          let data = &*self.data;
-          let read_result = read(&data.sock, 0u);
+          let read_result = {
+            let data = &*self.data;
+            read(&data.sock, 0)
+          };
           if read_result.is_err() {
               let err_data = read_result.get_err();
 
@@ -918,8 +920,7 @@ impl io::Reader for TcpSocketBuf {
                   // should show up in a later call to read().
                   break;
               }
-          }
-          else {
+          } else {
               self.data.buf = result::unwrap(read_result);
               self.data.buf_off = 0;
           }
@@ -935,8 +936,10 @@ impl io::Reader for TcpSocketBuf {
             return c as int
           }
 
-          let data = &*self.data;
-          let read_result = read(&data.sock, 0u);
+          let read_result = {
+            let data = &*self.data;
+            read(&data.sock, 0)
+          };
           if read_result.is_err() {
               let err_data = read_result.get_err();
 
@@ -948,8 +951,7 @@ impl io::Reader for TcpSocketBuf {
                          err_data.err_name, err_data.err_msg);
                   fail!()
               }
-          }
-          else {
+          } else {
               self.data.buf = result::unwrap(read_result);
               self.data.buf_off = 0;
           }