diff --git a/src/compiletest/runtest.rs b/src/compiletest/runtest.rs
index 1457d1de7d52a..567734b0dab7b 100644
--- a/src/compiletest/runtest.rs
+++ b/src/compiletest/runtest.rs
@@ -1609,7 +1609,7 @@ fn _arm_exec_compiled_test(config: &Config,
                 stderr_out.as_slice());
 
     ProcRes {
-        status: process::ExitStatus(exitcode),
+        status: process::ProcessExit::ExitStatus(exitcode),
         stdout: stdout_out,
         stderr: stderr_out,
         cmdline: cmdline
diff --git a/src/libcollections/str.rs b/src/libcollections/str.rs
index feec2a216c703..bb03575b3ac27 100644
--- a/src/libcollections/str.rs
+++ b/src/libcollections/str.rs
@@ -51,7 +51,7 @@
 
 #![doc(primitive = "str")]
 
-pub use self::MaybeOwned::*;
+use self::MaybeOwned::*;
 use self::RecompositionState::*;
 use self::DecompositionType::*;
 
@@ -842,7 +842,7 @@ mod tests {
     use core::iter::AdditiveIterator;
     use super::{eq_slice, from_utf8, is_utf8, is_utf16, raw};
     use super::truncate_utf16_at_nul;
-    use super::{Owned, Slice};
+    use super::MaybeOwned::{Owned, Slice};
 
     #[test]
     fn test_eq_slice() {
diff --git a/src/libcollections/string.rs b/src/libcollections/string.rs
index bcd1e3b36809a..edd96dd683f9e 100644
--- a/src/libcollections/string.rs
+++ b/src/libcollections/string.rs
@@ -26,7 +26,8 @@ use core::raw::Slice as RawSlice;
 
 use slice::CloneSliceExt;
 use str;
-use str::{CharRange, CowString, FromStr, StrAllocating, Owned};
+use str::{CharRange, CowString, FromStr, StrAllocating};
+use str::MaybeOwned::Owned;
 use vec::{DerefVec, Vec, as_vec};
 
 /// A growable string stored as a UTF-8 encoded buffer.
diff --git a/src/librustc/lint/builtin.rs b/src/librustc/lint/builtin.rs
index 88b12aa5660c9..aad3cdf8b4ae9 100644
--- a/src/librustc/lint/builtin.rs
+++ b/src/librustc/lint/builtin.rs
@@ -37,7 +37,7 @@ use util::nodemap::{FnvHashMap, NodeSet};
 use lint::{Context, LintPass, LintArray};
 
 use std::{cmp, slice};
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::num::SignedInt;
 use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64};
 use syntax::{abi, ast, ast_map};
diff --git a/src/librustc/metadata/creader.rs b/src/librustc/metadata/creader.rs
index 9e87153e64a15..323b084afdc32 100644
--- a/src/librustc/metadata/creader.rs
+++ b/src/librustc/metadata/creader.rs
@@ -23,7 +23,7 @@ use plugin::load::PluginMetadata;
 use util::nodemap::FnvHashMap;
 
 use std::rc::Rc;
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use syntax::ast;
 use syntax::abi;
 use syntax::attr;
diff --git a/src/librustc/metadata/loader.rs b/src/librustc/metadata/loader.rs
index e83f69b1e318e..bc34b0b45e96f 100644
--- a/src/librustc/metadata/loader.rs
+++ b/src/librustc/metadata/loader.rs
@@ -228,7 +228,7 @@ use util::fs;
 
 use std::c_str::ToCStr;
 use std::cmp;
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::collections::{HashMap, HashSet};
 use std::io::fs::PathExtensions;
 use std::io;
diff --git a/src/librustc/middle/const_eval.rs b/src/librustc/middle/const_eval.rs
index 9b94335654734..62f1a30f8e746 100644
--- a/src/librustc/middle/const_eval.rs
+++ b/src/librustc/middle/const_eval.rs
@@ -28,7 +28,7 @@ use syntax::visit::{mod, Visitor};
 use syntax::{ast_map, ast_util, codemap};
 
 use std::rc::Rc;
-use std::collections::hash_map::Vacant;
+use std::collections::hash_map::Entry::Vacant;
 
 //
 // This pass classifies expressions by their constant-ness.
diff --git a/src/librustc/middle/infer/freshen.rs b/src/librustc/middle/infer/freshen.rs
index ebff854060cae..a8bf7546559fd 100644
--- a/src/librustc/middle/infer/freshen.rs
+++ b/src/librustc/middle/infer/freshen.rs
@@ -34,7 +34,7 @@ use middle::ty::{mod, Ty};
 use middle::ty_fold;
 use middle::ty_fold::TypeFoldable;
 use middle::ty_fold::TypeFolder;
-use std::collections::hash_map;
+use std::collections::hash_map::{mod, Entry};
 
 use super::InferCtxt;
 use super::unify::InferCtxtMethodsForSimplyUnifiableTypes;
@@ -67,8 +67,8 @@ impl<'a, 'tcx> TypeFreshener<'a, 'tcx> {
         }
 
         match self.freshen_map.entry(key) {
-            hash_map::Occupied(entry) => *entry.get(),
-            hash_map::Vacant(entry) => {
+            Entry::Occupied(entry) => *entry.get(),
+            Entry::Vacant(entry) => {
                 let index = self.freshen_count;
                 self.freshen_count += 1;
                 let t = ty::mk_infer(self.infcx.tcx, freshener(index));
diff --git a/src/librustc/middle/infer/region_inference/graphviz.rs b/src/librustc/middle/infer/region_inference/graphviz.rs
index 720de357a273d..3e55f6fa896bb 100644
--- a/src/librustc/middle/infer/region_inference/graphviz.rs
+++ b/src/librustc/middle/infer/region_inference/graphviz.rs
@@ -26,7 +26,7 @@ use session::config;
 use util::nodemap::{FnvHashMap, FnvHashSet};
 use util::ppaux::Repr;
 
-use std::collections::hash_map::Vacant;
+use std::collections::hash_map::Entry::Vacant;
 use std::io::{mod, File};
 use std::os;
 use std::sync::atomic;
diff --git a/src/librustc/middle/traits/fulfill.rs b/src/librustc/middle/traits/fulfill.rs
index 213d97b4b344a..72e4eb5d1d634 100644
--- a/src/librustc/middle/traits/fulfill.rs
+++ b/src/librustc/middle/traits/fulfill.rs
@@ -12,7 +12,7 @@ use middle::infer::InferCtxt;
 use middle::mem_categorization::Typer;
 use middle::ty::{mod, Ty};
 use std::collections::HashSet;
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::default::Default;
 use std::rc::Rc;
 use syntax::ast;
diff --git a/src/librustc/middle/ty.rs b/src/librustc/middle/ty.rs
index d5c97bd6aa6c6..c2edcf1e3e258 100644
--- a/src/librustc/middle/ty.rs
+++ b/src/librustc/middle/ty.rs
@@ -77,7 +77,8 @@ use std::mem;
 use std::ops;
 use std::rc::Rc;
 use collections::enum_set::{EnumSet, CLike};
-use std::collections::hash_map::{HashMap, Occupied, Vacant};
+use std::collections::hash_map::HashMap;
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use syntax::abi;
 use syntax::ast::{CrateNum, DefId, DUMMY_NODE_ID, Ident, ItemTrait, LOCAL_CRATE};
 use syntax::ast::{MutImmutable, MutMutable, Name, NamedField, NodeId};
diff --git a/src/librustc/session/config.rs b/src/librustc/session/config.rs
index 25cdeb83d85dc..0652645907bc8 100644
--- a/src/librustc/session/config.rs
+++ b/src/librustc/session/config.rs
@@ -33,7 +33,7 @@ use syntax::parse;
 use syntax::parse::token::InternedString;
 
 use std::collections::HashMap;
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use getopts::{optopt, optmulti, optflag, optflagopt};
 use getopts;
 use std::cell::{RefCell};
diff --git a/src/librustc_resolve/lib.rs b/src/librustc_resolve/lib.rs
index 99f0a6cdfc3cf..ac8d5d1e977b5 100644
--- a/src/librustc_resolve/lib.rs
+++ b/src/librustc_resolve/lib.rs
@@ -90,7 +90,7 @@ use syntax::owned_slice::OwnedSlice;
 use syntax::visit::{mod, Visitor};
 
 use std::collections::{HashMap, HashSet};
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::cell::{Cell, RefCell};
 use std::mem::replace;
 use std::rc::{Rc, Weak};
diff --git a/src/librustc_typeck/check/_match.rs b/src/librustc_typeck/check/_match.rs
index 44cc5fce53da3..081faaac1d799 100644
--- a/src/librustc_typeck/check/_match.rs
+++ b/src/librustc_typeck/check/_match.rs
@@ -21,7 +21,7 @@ use util::nodemap::FnvHashMap;
 use util::ppaux::Repr;
 
 use std::cmp;
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use syntax::ast;
 use syntax::ast_util;
 use syntax::codemap::{Span, Spanned};
diff --git a/src/librustc_typeck/check/regionck.rs b/src/librustc_typeck/check/regionck.rs
index 33c015a9a081c..8e70b8ff0da50 100644
--- a/src/librustc_typeck/check/regionck.rs
+++ b/src/librustc_typeck/check/regionck.rs
@@ -135,7 +135,7 @@ use syntax::visit;
 use syntax::visit::Visitor;
 
 use std::cell::{RefCell};
-use std::collections::hash_map::{Vacant, Occupied};
+use std::collections::hash_map::Entry::{Vacant, Occupied};
 
 use self::RepeatingScope::Repeating;
 use self::SubjectNode::Subject;
diff --git a/src/librustdoc/html/render.rs b/src/librustdoc/html/render.rs
index 8831b5e7d96fe..efec620bca758 100644
--- a/src/librustdoc/html/render.rs
+++ b/src/librustdoc/html/render.rs
@@ -35,7 +35,7 @@
 pub use self::ExternalLocation::*;
 
 use std::cell::RefCell;
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::collections::{HashMap, HashSet};
 use std::default::Default;
 use std::fmt;
diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs
index 0f4968162bef4..182c83d805c2d 100644
--- a/src/librustdoc/lib.rs
+++ b/src/librustdoc/lib.rs
@@ -34,7 +34,7 @@ extern crate "test" as testing;
 
 use std::cell::RefCell;
 use std::collections::HashMap;
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::io::File;
 use std::io;
 use std::rc::Rc;
diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs
index 0b04edf67761f..c32fec67d6673 100644
--- a/src/libstd/collections/hash/map.rs
+++ b/src/libstd/collections/hash/map.rs
@@ -10,7 +10,7 @@
 //
 // ignore-lexer-test FIXME #15883
 
-pub use self::Entry::*;
+use self::Entry::*;
 use self::SearchResult::*;
 use self::VacantEntryState::*;
 
@@ -30,18 +30,20 @@ use option::Option::{Some, None};
 use result::Result;
 use result::Result::{Ok, Err};
 
-use super::table;
 use super::table::{
+    mod,
     Bucket,
-    Empty,
     EmptyBucket,
-    Full,
     FullBucket,
     FullBucketImm,
     FullBucketMut,
     RawTable,
     SafeHash
 };
+use super::table::BucketState::{
+    Empty,
+    Full,
+};
 
 const INITIAL_LOG2_CAP: uint = 5;
 pub const INITIAL_CAPACITY: uint = 1 << INITIAL_LOG2_CAP; // 2^5
@@ -379,7 +381,7 @@ fn robin_hood<'a, K: 'a, V: 'a>(mut bucket: FullBucketMut<'a, K, V>,
             assert!(probe.index() != idx_end);
 
             let full_bucket = match probe.peek() {
-                table::Empty(bucket) => {
+                Empty(bucket) => {
                     // Found a hole!
                     let b = bucket.put(old_hash, old_key, old_val);
                     // Now that it's stolen, just read the value's pointer
@@ -390,7 +392,7 @@ fn robin_hood<'a, K: 'a, V: 'a>(mut bucket: FullBucketMut<'a, K, V>,
                                .into_mut_refs()
                                .1;
                 },
-                table::Full(bucket) => bucket
+                Full(bucket) => bucket
             };
 
             let probe_ib = full_bucket.index() - full_bucket.distance();
@@ -1470,7 +1472,8 @@ mod test_map {
     use prelude::*;
 
     use super::HashMap;
-    use super::{Occupied, Vacant};
+    use super::Entry::{Occupied, Vacant};
+    use cmp::Equiv;
     use hash;
     use iter::{range_inclusive, range_step_inclusive};
     use cell::RefCell;
diff --git a/src/libstd/collections/hash/table.rs b/src/libstd/collections/hash/table.rs
index 115edcabca1e9..ce7dbd8ea5ecb 100644
--- a/src/libstd/collections/hash/table.rs
+++ b/src/libstd/collections/hash/table.rs
@@ -10,7 +10,7 @@
 //
 // ignore-lexer-test FIXME #15883
 
-pub use self::BucketState::*;
+use self::BucketState::*;
 
 use clone::Clone;
 use cmp;
diff --git a/src/libstd/dynamic_lib.rs b/src/libstd/dynamic_lib.rs
index e520c70824e16..4d8c7d67b8c2e 100644
--- a/src/libstd/dynamic_lib.rs
+++ b/src/libstd/dynamic_lib.rs
@@ -200,7 +200,7 @@ mod test {
           target_os = "freebsd",
           target_os = "dragonfly"))]
 pub mod dl {
-    pub use self::Rtld::*;
+    use self::Rtld::*;
 
     use prelude::*;
     use c_str::CString;
diff --git a/src/libstd/num/f32.rs b/src/libstd/num/f32.rs
index d307e1f741567..951627b26cad9 100644
--- a/src/libstd/num/f32.rs
+++ b/src/libstd/num/f32.rs
@@ -21,6 +21,9 @@ use intrinsics;
 use libc::c_int;
 use num::{Float, FloatMath};
 use num::strconv;
+use num::strconv::ExponentFormat::{ExpNone, ExpDec};
+use num::strconv::SignificantDigits::{DigAll, DigMax, DigExact};
+use num::strconv::SignFormat::SignNeg;
 
 pub use core::f32::{RADIX, MANTISSA_DIGITS, DIGITS, EPSILON, MIN_VALUE};
 pub use core::f32::{MIN_POS_VALUE, MAX_VALUE, MIN_EXP, MAX_EXP, MIN_10_EXP};
@@ -252,7 +255,7 @@ impl FloatMath for f32 {
 #[experimental = "may be removed or relocated"]
 pub fn to_string(num: f32) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigAll, strconv::ExpNone, false);
+        num, 10u, true, SignNeg, DigAll, ExpNone, false);
     r
 }
 
@@ -265,7 +268,7 @@ pub fn to_string(num: f32) -> String {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_hex(num: f32) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 16u, true, strconv::SignNeg, strconv::DigAll, strconv::ExpNone, false);
+        num, 16u, true, SignNeg, DigAll, ExpNone, false);
     r
 }
 
@@ -279,8 +282,7 @@ pub fn to_str_hex(num: f32) -> String {
 #[inline]
 #[experimental = "may be removed or relocated"]
 pub fn to_str_radix_special(num: f32, rdx: uint) -> (String, bool) {
-    strconv::float_to_str_common(num, rdx, true,
-                           strconv::SignNeg, strconv::DigAll, strconv::ExpNone, false)
+    strconv::float_to_str_common(num, rdx, true, SignNeg, DigAll, ExpNone, false)
 }
 
 /// Converts a float to a string with exactly the number of
@@ -294,7 +296,7 @@ pub fn to_str_radix_special(num: f32, rdx: uint) -> (String, bool) {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_exact(num: f32, dig: uint) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigExact(dig), strconv::ExpNone, false);
+        num, 10u, true, SignNeg, DigExact(dig), ExpNone, false);
     r
 }
 
@@ -309,7 +311,7 @@ pub fn to_str_exact(num: f32, dig: uint) -> String {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_digits(num: f32, dig: uint) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigMax(dig), strconv::ExpNone, false);
+        num, 10u, true, SignNeg, DigMax(dig), ExpNone, false);
     r
 }
 
@@ -325,7 +327,7 @@ pub fn to_str_digits(num: f32, dig: uint) -> String {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_exp_exact(num: f32, dig: uint, upper: bool) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigExact(dig), strconv::ExpDec, upper);
+        num, 10u, true, SignNeg, DigExact(dig), ExpDec, upper);
     r
 }
 
@@ -341,7 +343,7 @@ pub fn to_str_exp_exact(num: f32, dig: uint, upper: bool) -> String {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_exp_digits(num: f32, dig: uint, upper: bool) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigMax(dig), strconv::ExpDec, upper);
+        num, 10u, true, SignNeg, DigMax(dig), ExpDec, upper);
     r
 }
 
diff --git a/src/libstd/num/f64.rs b/src/libstd/num/f64.rs
index dfe20d59c82ce..7cc94b9ebbbcb 100644
--- a/src/libstd/num/f64.rs
+++ b/src/libstd/num/f64.rs
@@ -20,6 +20,9 @@ use intrinsics;
 use libc::c_int;
 use num::{Float, FloatMath};
 use num::strconv;
+use num::strconv::ExponentFormat::{ExpNone, ExpDec};
+use num::strconv::SignificantDigits::{DigAll, DigMax, DigExact};
+use num::strconv::SignFormat::SignNeg;
 
 pub use core::f64::{RADIX, MANTISSA_DIGITS, DIGITS, EPSILON, MIN_VALUE};
 pub use core::f64::{MIN_POS_VALUE, MAX_VALUE, MIN_EXP, MAX_EXP, MIN_10_EXP};
@@ -260,7 +263,7 @@ impl FloatMath for f64 {
 #[experimental = "may be removed or relocated"]
 pub fn to_string(num: f64) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigAll, strconv::ExpNone, false);
+        num, 10u, true, SignNeg, DigAll, ExpNone, false);
     r
 }
 
@@ -273,7 +276,7 @@ pub fn to_string(num: f64) -> String {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_hex(num: f64) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 16u, true, strconv::SignNeg, strconv::DigAll, strconv::ExpNone, false);
+        num, 16u, true, SignNeg, DigAll, ExpNone, false);
     r
 }
 
@@ -287,8 +290,7 @@ pub fn to_str_hex(num: f64) -> String {
 #[inline]
 #[experimental = "may be removed or relocated"]
 pub fn to_str_radix_special(num: f64, rdx: uint) -> (String, bool) {
-    strconv::float_to_str_common(num, rdx, true,
-                           strconv::SignNeg, strconv::DigAll, strconv::ExpNone, false)
+    strconv::float_to_str_common(num, rdx, true, SignNeg, DigAll, ExpNone, false)
 }
 
 /// Converts a float to a string with exactly the number of
@@ -302,7 +304,7 @@ pub fn to_str_radix_special(num: f64, rdx: uint) -> (String, bool) {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_exact(num: f64, dig: uint) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigExact(dig), strconv::ExpNone, false);
+        num, 10u, true, SignNeg, DigExact(dig), ExpNone, false);
     r
 }
 
@@ -317,7 +319,7 @@ pub fn to_str_exact(num: f64, dig: uint) -> String {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_digits(num: f64, dig: uint) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigMax(dig), strconv::ExpNone, false);
+        num, 10u, true, SignNeg, DigMax(dig), ExpNone, false);
     r
 }
 
@@ -333,7 +335,7 @@ pub fn to_str_digits(num: f64, dig: uint) -> String {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_exp_exact(num: f64, dig: uint, upper: bool) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigExact(dig), strconv::ExpDec, upper);
+        num, 10u, true, SignNeg, DigExact(dig), ExpDec, upper);
     r
 }
 
@@ -349,7 +351,7 @@ pub fn to_str_exp_exact(num: f64, dig: uint, upper: bool) -> String {
 #[experimental = "may be removed or relocated"]
 pub fn to_str_exp_digits(num: f64, dig: uint, upper: bool) -> String {
     let (r, _) = strconv::float_to_str_common(
-        num, 10u, true, strconv::SignNeg, strconv::DigMax(dig), strconv::ExpDec, upper);
+        num, 10u, true, SignNeg, DigMax(dig), ExpDec, upper);
     r
 }
 
diff --git a/src/libstd/num/strconv.rs b/src/libstd/num/strconv.rs
index 016c4bd532a17..b3e4dd52f89cb 100644
--- a/src/libstd/num/strconv.rs
+++ b/src/libstd/num/strconv.rs
@@ -12,9 +12,9 @@
 
 #![allow(missing_docs)]
 
-pub use self::ExponentFormat::*;
-pub use self::SignificantDigits::*;
-pub use self::SignFormat::*;
+use self::ExponentFormat::*;
+use self::SignificantDigits::*;
+use self::SignFormat::*;
 
 use char::{mod, Char};
 use num::{mod, Int, Float, FPNaN, FPInfinite, ToPrimitive};
diff --git a/src/libstd/os.rs b/src/libstd/os.rs
index 20a72f45fbf9b..258e8964a9fdf 100644
--- a/src/libstd/os.rs
+++ b/src/libstd/os.rs
@@ -28,9 +28,9 @@
 #![allow(non_snake_case)]
 #![allow(unused_imports)]
 
-pub use self::MemoryMapKind::*;
-pub use self::MapOption::*;
-pub use self::MapError::*;
+use self::MemoryMapKind::*;
+use self::MapOption::*;
+use self::MapError::*;
 
 use clone::Clone;
 use error::{FromError, Error};
@@ -1617,8 +1617,8 @@ mod tests {
         use result::Result::{Ok, Err};
 
         let chunk = match os::MemoryMap::new(16, &[
-            os::MapReadable,
-            os::MapWritable
+            os::MapOption::MapReadable,
+            os::MapOption::MapWritable
         ]) {
             Ok(chunk) => chunk,
             Err(msg) => panic!("{}", msg)
@@ -1660,10 +1660,10 @@ mod tests {
         file.write_u8(0);
 
         let chunk = MemoryMap::new(size / 2, &[
-            MapReadable,
-            MapWritable,
-            MapFd(get_fd(&file)),
-            MapOffset(size / 2)
+            MapOption::MapReadable,
+            MapOption::MapWritable,
+            MapOption::MapFd(get_fd(&file)),
+            MapOption::MapOffset(size / 2)
         ]).unwrap();
         assert!(chunk.len > 0);
 
diff --git a/src/libstd/path/windows.rs b/src/libstd/path/windows.rs
index b498b3e8ad083..c2c17103554ce 100644
--- a/src/libstd/path/windows.rs
+++ b/src/libstd/path/windows.rs
@@ -12,7 +12,7 @@
 
 //! Windows file path handling
 
-pub use self::PathPrefix::*;
+use self::PathPrefix::*;
 
 use ascii::AsciiCast;
 use c_str::{CString, ToCStr};
@@ -1117,6 +1117,7 @@ fn prefix_len(p: Option<PathPrefix>) -> uint {
 mod tests {
     use prelude::*;
     use super::*;
+    use super::PathPrefix::*;
     use super::parse_prefix;
 
     macro_rules! t {
diff --git a/src/libstd/sys/common/net.rs b/src/libstd/sys/common/net.rs
index 73da200e16238..382f6875b281d 100644
--- a/src/libstd/sys/common/net.rs
+++ b/src/libstd/sys/common/net.rs
@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pub use self::SocketStatus::*;
-pub use self::InAddr::*;
+use self::SocketStatus::*;
+use self::InAddr::*;
 
 use alloc::arc::Arc;
 use libc::{mod, c_char, c_int};
diff --git a/src/libstd/sys/unix/pipe.rs b/src/libstd/sys/unix/pipe.rs
index 26fd410a7a9b6..348b7cfad334e 100644
--- a/src/libstd/sys/unix/pipe.rs
+++ b/src/libstd/sys/unix/pipe.rs
@@ -19,6 +19,7 @@ use prelude::*;
 use sys::{mod, timer, retry, c, set_nonblocking, wouldblock};
 use sys::fs::{fd_t, FileDesc};
 use sys_common::net::*;
+use sys_common::net::SocketStatus::*;
 use sys_common::{eof, mkerr_libc};
 
 fn unix_socket(ty: libc::c_int) -> IoResult<fd_t> {
diff --git a/src/libstd/sys/unix/tcp.rs b/src/libstd/sys/unix/tcp.rs
index dacd754582ba7..5c99ad1e0ce22 100644
--- a/src/libstd/sys/unix/tcp.rs
+++ b/src/libstd/sys/unix/tcp.rs
@@ -21,6 +21,7 @@ use sys::{set_nonblocking, wouldblock};
 use sys;
 use sys_common;
 use sys_common::net;
+use sys_common::net::SocketStatus::Readable;
 
 pub use sys_common::net::TcpStream;
 
@@ -124,7 +125,7 @@ impl TcpAcceptor {
                 fd => return Ok(TcpStream::new(fd as sock_t)),
             }
             try!(net::await(&[self.fd(), self.inner.reader.fd()],
-                       deadline, net::Readable));
+                       deadline, Readable));
         }
 
         Err(sys_common::eof())
diff --git a/src/libstd/sys/unix/timer.rs b/src/libstd/sys/unix/timer.rs
index 79a6a871f8dd4..fe393b81e3d9a 100644
--- a/src/libstd/sys/unix/timer.rs
+++ b/src/libstd/sys/unix/timer.rs
@@ -46,7 +46,7 @@
 //!
 //! Note that all time units in this file are in *milliseconds*.
 
-pub use self::Req::*;
+use self::Req::*;
 
 use libc;
 use mem;
diff --git a/src/libstd/sys/windows/timer.rs b/src/libstd/sys/windows/timer.rs
index e2f9e2a9201c3..7e4dd768aa975 100644
--- a/src/libstd/sys/windows/timer.rs
+++ b/src/libstd/sys/windows/timer.rs
@@ -20,7 +20,7 @@
 //! Other than that, the implementation is pretty straightforward in terms of
 //! the other two implementations of timers with nothing *that* new showing up.
 
-pub use self::Req::*;
+use self::Req::*;
 
 use libc;
 use ptr;
diff --git a/src/libsyntax/ext/mtwt.rs b/src/libsyntax/ext/mtwt.rs
index ae979020bc7e5..f0392912878ff 100644
--- a/src/libsyntax/ext/mtwt.rs
+++ b/src/libsyntax/ext/mtwt.rs
@@ -21,7 +21,7 @@ use ast::{Ident, Mrk, Name, SyntaxContext};
 
 use std::cell::RefCell;
 use std::collections::HashMap;
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 
 /// The SCTable contains a table of SyntaxContext_'s. It
 /// represents a flattened tree structure, to avoid having
diff --git a/src/libsyntax/ext/tt/macro_parser.rs b/src/libsyntax/ext/tt/macro_parser.rs
index 4785fe37293c0..bc639c32380f5 100644
--- a/src/libsyntax/ext/tt/macro_parser.rs
+++ b/src/libsyntax/ext/tt/macro_parser.rs
@@ -98,7 +98,7 @@ use ptr::P;
 use std::mem;
 use std::rc::Rc;
 use std::collections::HashMap;
-use std::collections::hash_map::{Vacant, Occupied};
+use std::collections::hash_map::Entry::{Vacant, Occupied};
 
 // To avoid costly uniqueness checks, we require that `MatchSeq` always has
 // a nonempty body.
diff --git a/src/libtest/stats.rs b/src/libtest/stats.rs
index 7441b39f35b23..41146cded704c 100644
--- a/src/libtest/stats.rs
+++ b/src/libtest/stats.rs
@@ -11,7 +11,7 @@
 #![allow(missing_docs)]
 
 use std::collections::hash_map;
-use std::collections::hash_map::{Occupied, Vacant};
+use std::collections::hash_map::Entry::{Occupied, Vacant};
 use std::fmt::Show;
 use std::hash::Hash;
 use std::io;
diff --git a/src/test/run-pass/exponential-notation.rs b/src/test/run-pass/exponential-notation.rs
index f63ab7fb7c9a5..38d1093762432 100644
--- a/src/test/run-pass/exponential-notation.rs
+++ b/src/test/run-pass/exponential-notation.rs
@@ -10,25 +10,27 @@
 
 #![feature(macro_rules)]
 
-use std::num::strconv as s;
+use std::num::strconv::ExponentFormat::{ExpBin, ExpDec};
+use std::num::strconv::SignificantDigits::DigMax;
+use std::num::strconv::SignFormat::{SignAll, SignNeg};
 use std::num::strconv::float_to_str_common as to_string;
 
 macro_rules! t(($a:expr, $b:expr) => { { let (r, _) = $a; assert_eq!(r, $b.to_string()); } });
 
 pub fn main() {
     // Basic usage
-    t!(to_string(1.2345678e-5f64, 10u, true, s::SignNeg, s::DigMax(6), s::ExpDec, false),
+    t!(to_string(1.2345678e-5f64, 10u, true, SignNeg, DigMax(6), ExpDec, false),
              "1.234568e-5");
 
     // Hexadecimal output
-    t!(to_string(7.281738281250e+01f64, 16u, true, s::SignAll, s::DigMax(6), s::ExpBin, false),
+    t!(to_string(7.281738281250e+01f64, 16u, true, SignAll, DigMax(6), ExpBin, false),
               "+1.2345p+6");
-    t!(to_string(-1.777768135071e-02f64, 16u, true, s::SignAll, s::DigMax(6), s::ExpBin, false),
+    t!(to_string(-1.777768135071e-02f64, 16u, true, SignAll, DigMax(6), ExpBin, false),
              "-1.2345p-6");
 
     // Some denormals
-    t!(to_string(4.9406564584124654e-324f64, 10u, true, s::SignNeg, s::DigMax(6), s::ExpBin, false),
+    t!(to_string(4.9406564584124654e-324f64, 10u, true, SignNeg, DigMax(6), ExpBin, false),
              "1p-1074");
-    t!(to_string(2.2250738585072009e-308f64, 10u, true, s::SignNeg, s::DigMax(6), s::ExpBin, false),
+    t!(to_string(2.2250738585072009e-308f64, 10u, true, SignNeg, DigMax(6), ExpBin, false),
              "1p-1022");
 }