diff --git a/src/compiletest/runtest.rs b/src/compiletest/runtest.rs
index b48ccfc4374..7dcfa1a9315 100644
--- a/src/compiletest/runtest.rs
+++ b/src/compiletest/runtest.rs
@@ -1196,7 +1196,7 @@ fn compose_and_run_compiler(
 
 fn ensure_dir(path: &Path) {
     if path.is_dir() { return; }
-    fs::mkdir(path, io::UserRWX).unwrap();
+    fs::mkdir(path, io::USER_RWX).unwrap();
 }
 
 fn compose_and_run(config: &Config, testfile: &Path,
diff --git a/src/librustc/back/link.rs b/src/librustc/back/link.rs
index 0708fdc6eba..adae71ddad4 100644
--- a/src/librustc/back/link.rs
+++ b/src/librustc/back/link.rs
@@ -466,7 +466,7 @@ pub fn invalid_output_for_target(sess: &Session,
 fn is_writeable(p: &Path) -> bool {
     match p.stat() {
         Err(..) => true,
-        Ok(m) => m.perm & io::UserWrite == io::UserWrite
+        Ok(m) => m.perm & io::USER_WRITE == io::USER_WRITE
     }
 }
 
@@ -1322,7 +1322,7 @@ fn add_upstream_rust_crates(cmd: &mut Command, sess: &Session,
                 // Fix up permissions of the copy, as fs::copy() preserves
                 // permissions, but the original file may have been installed
                 // by a package manager and may be read-only.
-                match fs::chmod(&dst, io::UserRead | io::UserWrite) {
+                match fs::chmod(&dst, io::USER_READ | io::USER_WRITE) {
                     Ok(..) => {}
                     Err(e) => {
                         sess.err(format!("failed to chmod {} when preparing \
diff --git a/src/librustc/middle/save/mod.rs b/src/librustc/middle/save/mod.rs
index c956c2d2b00..aa230496d94 100644
--- a/src/librustc/middle/save/mod.rs
+++ b/src/librustc/middle/save/mod.rs
@@ -1467,7 +1467,7 @@ pub fn process_crate(sess: &Session,
         },
     };
 
-    match fs::mkdir_recursive(&root_path, io::UserRWX) {
+    match fs::mkdir_recursive(&root_path, io::USER_RWX) {
         Err(e) => sess.err(format!("Could not create directory {}: {}",
                            root_path.display(), e).as_slice()),
         _ => (),
diff --git a/src/librustc_back/fs.rs b/src/librustc_back/fs.rs
index 756516d17a2..a062c68d998 100644
--- a/src/librustc_back/fs.rs
+++ b/src/librustc_back/fs.rs
@@ -68,7 +68,7 @@ mod test {
         let linkdir = tmpdir.join("test3");
 
         File::create(&file).unwrap();
-        mkdir(&dir, io::UserRWX).unwrap();
+        mkdir(&dir, io::USER_RWX).unwrap();
         symlink(&file, &link).unwrap();
         symlink(&dir, &linkdir).unwrap();
 
@@ -91,8 +91,8 @@ mod test {
         let e = d.join("e");
         let f = a.join("f");
 
-        mkdir_recursive(&b, io::UserRWX).unwrap();
-        mkdir_recursive(&d, io::UserRWX).unwrap();
+        mkdir_recursive(&b, io::USER_RWX).unwrap();
+        mkdir_recursive(&d, io::USER_RWX).unwrap();
         File::create(&f).unwrap();
         symlink(&Path::new("../d/e"), &c).unwrap();
         symlink(&Path::new("../f"), &e).unwrap();
diff --git a/src/librustdoc/html/render.rs b/src/librustdoc/html/render.rs
index 8668e684c2d..cef44c2b262 100644
--- a/src/librustdoc/html/render.rs
+++ b/src/librustdoc/html/render.rs
@@ -618,7 +618,7 @@ fn write(dst: Path, contents: &[u8]) -> io::IoResult<()> {
 /// skipping if the directory already exists.
 fn mkdir(path: &Path) -> io::IoResult<()> {
     if !path.exists() {
-        fs::mkdir(path, io::UserRWX)
+        fs::mkdir(path, io::USER_RWX)
     } else {
         Ok(())
     }
diff --git a/src/libstd/io/fs.rs b/src/libstd/io/fs.rs
index f777460e66a..24cc53e784e 100644
--- a/src/libstd/io/fs.rs
+++ b/src/libstd/io/fs.rs
@@ -295,9 +295,9 @@ pub fn unlink(path: &Path) -> IoResult<()> {
                     Ok(stat) => stat,
                     Err(..) => return Err(e),
                 };
-                if stat.perm.intersects(io::UserWrite) { return Err(e) }
+                if stat.perm.intersects(io::USER_WRITE) { return Err(e) }
 
-                match chmod(path, stat.perm | io::UserWrite) {
+                match chmod(path, stat.perm | io::USER_WRITE) {
                     Ok(()) => do_unlink(path),
                     Err(..) => {
                         // Try to put it back as we found it
@@ -501,10 +501,10 @@ pub fn copy(from: &Path, to: &Path) -> IoResult<()> {
 /// use std::io;
 /// use std::io::fs;
 ///
-/// fs::chmod(&Path::new("file.txt"), io::UserFile);
-/// fs::chmod(&Path::new("file.txt"), io::UserRead | io::UserWrite);
-/// fs::chmod(&Path::new("dir"),      io::UserDir);
-/// fs::chmod(&Path::new("file.exe"), io::UserExec);
+/// fs::chmod(&Path::new("file.txt"), io::USER_FILE);
+/// fs::chmod(&Path::new("file.txt"), io::USER_READ | io::USER_WRITE);
+/// fs::chmod(&Path::new("dir"),      io::USER_DIR);
+/// fs::chmod(&Path::new("file.exe"), io::USER_EXEC);
 /// ```
 ///
 /// # Error
@@ -578,7 +578,7 @@ pub fn readlink(path: &Path) -> IoResult<Path> {
 /// use std::io::fs;
 ///
 /// let p = Path::new("/some/dir");
-/// fs::mkdir(&p, io::UserRWX);
+/// fs::mkdir(&p, io::USER_RWX);
 /// ```
 ///
 /// # Error
@@ -996,7 +996,7 @@ mod test {
         use os;
         use rand;
         let ret = os::tmpdir().join(format!("rust-{}", rand::random::<u32>()));
-        check!(io::fs::mkdir(&ret, io::UserRWX));
+        check!(io::fs::mkdir(&ret, io::USER_RWX));
         TempDir(ret)
     }
 
@@ -1180,7 +1180,7 @@ mod test {
     fn file_test_stat_is_correct_on_is_dir() {
         let tmpdir = tmpdir();
         let filename = &tmpdir.join("file_stat_correct_on_is_dir");
-        check!(mkdir(filename, io::UserRWX));
+        check!(mkdir(filename, io::USER_RWX));
         let stat_res_fn = check!(stat(filename));
         assert!(stat_res_fn.kind == io::TypeDirectory);
         let stat_res_meth = check!(filename.stat());
@@ -1192,7 +1192,7 @@ mod test {
     fn file_test_fileinfo_false_when_checking_is_file_on_a_directory() {
         let tmpdir = tmpdir();
         let dir = &tmpdir.join("fileinfo_false_on_dir");
-        check!(mkdir(dir, io::UserRWX));
+        check!(mkdir(dir, io::USER_RWX));
         assert!(dir.is_file() == false);
         check!(rmdir(dir));
     }
@@ -1212,7 +1212,7 @@ mod test {
         let tmpdir = tmpdir();
         let dir = &tmpdir.join("before_and_after_dir");
         assert!(!dir.exists());
-        check!(mkdir(dir, io::UserRWX));
+        check!(mkdir(dir, io::USER_RWX));
         assert!(dir.exists());
         assert!(dir.is_dir());
         check!(rmdir(dir));
@@ -1224,7 +1224,7 @@ mod test {
         use str;
         let tmpdir = tmpdir();
         let dir = &tmpdir.join("di_readdir");
-        check!(mkdir(dir, io::UserRWX));
+        check!(mkdir(dir, io::USER_RWX));
         let prefix = "foo";
         for n in range(0i,3) {
             let f = dir.join(format!("{}.txt", n));
@@ -1255,14 +1255,14 @@ mod test {
     fn file_test_walk_dir() {
         let tmpdir = tmpdir();
         let dir = &tmpdir.join("walk_dir");
-        check!(mkdir(dir, io::UserRWX));
+        check!(mkdir(dir, io::USER_RWX));
 
         let dir1 = &dir.join("01/02/03");
-        check!(mkdir_recursive(dir1, io::UserRWX));
+        check!(mkdir_recursive(dir1, io::USER_RWX));
         check!(File::create(&dir1.join("04")));
 
         let dir2 = &dir.join("11/12/13");
-        check!(mkdir_recursive(dir2, io::UserRWX));
+        check!(mkdir_recursive(dir2, io::USER_RWX));
         check!(File::create(&dir2.join("14")));
 
         let mut files = check!(walk_dir(dir));
@@ -1282,7 +1282,7 @@ mod test {
     fn recursive_mkdir() {
         let tmpdir = tmpdir();
         let dir = tmpdir.join("d1/d2");
-        check!(mkdir_recursive(&dir, io::UserRWX));
+        check!(mkdir_recursive(&dir, io::USER_RWX));
         assert!(dir.is_dir())
     }
 
@@ -1292,10 +1292,10 @@ mod test {
         let dir = tmpdir.join("d1");
         let file = dir.join("f1");
 
-        check!(mkdir_recursive(&dir, io::UserRWX));
+        check!(mkdir_recursive(&dir, io::USER_RWX));
         check!(File::create(&file));
 
-        let result = mkdir_recursive(&file, io::UserRWX);
+        let result = mkdir_recursive(&file, io::USER_RWX);
 
         error!(result, "couldn't recursively mkdir");
         error!(result, "couldn't create directory");
@@ -1305,7 +1305,7 @@ mod test {
 
     #[test]
     fn recursive_mkdir_slash() {
-        check!(mkdir_recursive(&Path::new("/"), io::UserRWX));
+        check!(mkdir_recursive(&Path::new("/"), io::USER_RWX));
     }
 
     // FIXME(#12795) depends on lstat to work on windows
@@ -1318,8 +1318,8 @@ mod test {
         let dtt = dt.join("t");
         let d2 = tmpdir.join("d2");
         let canary = d2.join("do_not_delete");
-        check!(mkdir_recursive(&dtt, io::UserRWX));
-        check!(mkdir_recursive(&d2, io::UserRWX));
+        check!(mkdir_recursive(&dtt, io::USER_RWX));
+        check!(mkdir_recursive(&d2, io::USER_RWX));
         check!(File::create(&canary).write(b"foo"));
         check!(symlink(&d2, &dt.join("d2")));
         check!(rmdir_recursive(&d1));
@@ -1337,7 +1337,7 @@ mod test {
 
         let mut dirpath = tmpdir.path().clone();
         dirpath.push(format!("test-가一ー你好"));
-        check!(mkdir(&dirpath, io::UserRWX));
+        check!(mkdir(&dirpath, io::USER_RWX));
         assert!(dirpath.is_dir());
 
         let mut filepath = dirpath;
@@ -1355,7 +1355,7 @@ mod test {
         let tmpdir = tmpdir();
         let unicode = tmpdir.path();
         let unicode = unicode.join(format!("test-각丁ー再见"));
-        check!(mkdir(&unicode, io::UserRWX));
+        check!(mkdir(&unicode, io::USER_RWX));
         assert!(unicode.exists());
         assert!(!Path::new("test/unicode-bogus-path-각丁ー再见").exists());
     }
@@ -1436,12 +1436,12 @@ mod test {
         let out = tmpdir.join("out.txt");
 
         check!(File::create(&input));
-        check!(chmod(&input, io::UserRead));
+        check!(chmod(&input, io::USER_READ));
         check!(copy(&input, &out));
-        assert!(!check!(out.stat()).perm.intersects(io::UserWrite));
+        assert!(!check!(out.stat()).perm.intersects(io::USER_WRITE));
 
-        check!(chmod(&input, io::UserFile));
-        check!(chmod(&out, io::UserFile));
+        check!(chmod(&input, io::USER_FILE));
+        check!(chmod(&out, io::USER_FILE));
     }
 
     #[cfg(not(windows))] // FIXME(#10264) operation not permitted?
@@ -1517,16 +1517,16 @@ mod test {
         let file = tmpdir.join("in.txt");
 
         check!(File::create(&file));
-        assert!(check!(stat(&file)).perm.contains(io::UserWrite));
-        check!(chmod(&file, io::UserRead));
-        assert!(!check!(stat(&file)).perm.contains(io::UserWrite));
+        assert!(check!(stat(&file)).perm.contains(io::USER_WRITE));
+        check!(chmod(&file, io::USER_READ));
+        assert!(!check!(stat(&file)).perm.contains(io::USER_WRITE));
 
-        match chmod(&tmpdir.join("foo"), io::UserRWX) {
+        match chmod(&tmpdir.join("foo"), io::USER_RWX) {
             Ok(..) => fail!("wanted a failure"),
             Err(..) => {}
         }
 
-        check!(chmod(&file, io::UserFile));
+        check!(chmod(&file, io::USER_FILE));
     }
 
     #[test]
@@ -1677,7 +1677,7 @@ mod test {
         let tmpdir = tmpdir();
         let path = tmpdir.join("file");
         check!(File::create(&path));
-        check!(chmod(&path, io::UserRead));
+        check!(chmod(&path, io::USER_READ));
         check!(unlink(&path));
     }
 }
diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index c645e5240b8..e52a67cc32f 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -1803,35 +1803,93 @@ bitflags! {
     #[doc = "A set of permissions for a file or directory is represented"]
     #[doc = "by a set of flags which are or'd together."]
     flags FilePermission: u32 {
-        static UserRead     = 0o400,
-        static UserWrite    = 0o200,
-        static UserExecute  = 0o100,
-        static GroupRead    = 0o040,
-        static GroupWrite   = 0o020,
-        static GroupExecute = 0o010,
-        static OtherRead    = 0o004,
-        static OtherWrite   = 0o002,
-        static OtherExecute = 0o001,
+        static USER_READ     = 0o400,
+        static USER_WRITE    = 0o200,
+        static USER_EXECUTE  = 0o100,
+        static GROUP_READ    = 0o040,
+        static GROUP_WRITE   = 0o020,
+        static GROUP_EXECUTE = 0o010,
+        static OTHER_READ    = 0o004,
+        static OTHER_WRITE   = 0o002,
+        static OTHER_EXECUTE = 0o001,
 
-        static UserRWX  = UserRead.bits | UserWrite.bits | UserExecute.bits,
-        static GroupRWX = GroupRead.bits | GroupWrite.bits | GroupExecute.bits,
-        static OtherRWX = OtherRead.bits | OtherWrite.bits | OtherExecute.bits,
+        static USER_RWX  = USER_READ.bits | USER_WRITE.bits | USER_EXECUTE.bits,
+        static GROUP_RWX = GROUP_READ.bits | GROUP_WRITE.bits | GROUP_EXECUTE.bits,
+        static OTHER_RWX = OTHER_READ.bits | OTHER_WRITE.bits | OTHER_EXECUTE.bits,
 
         #[doc = "Permissions for user owned files, equivalent to 0644 on"]
         #[doc = "unix-like systems."]
-        static UserFile = UserRead.bits | UserWrite.bits | GroupRead.bits | OtherRead.bits,
+        static USER_FILE = USER_READ.bits | USER_WRITE.bits | GROUP_READ.bits | OTHER_READ.bits,
 
         #[doc = "Permissions for user owned directories, equivalent to 0755 on"]
         #[doc = "unix-like systems."]
-        static UserDir  = UserRWX.bits | GroupRead.bits | GroupExecute.bits |
-                   OtherRead.bits | OtherExecute.bits,
+        static USER_DIR  = USER_RWX.bits | GROUP_READ.bits | GROUP_EXECUTE.bits |
+                   OTHER_READ.bits | OTHER_EXECUTE.bits,
 
         #[doc = "Permissions for user owned executables, equivalent to 0755"]
         #[doc = "on unix-like systems."]
-        static UserExec = UserDir.bits,
+        static USER_EXEC = USER_DIR.bits,
 
         #[doc = "All possible permissions enabled."]
-        static AllPermissions = UserRWX.bits | GroupRWX.bits | OtherRWX.bits,
+        static ALL_PERMISSIONS = USER_RWX.bits | GROUP_RWX.bits | OTHER_RWX.bits,
+
+        // Deprecated names
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use USER_READ instead"]
+        static UserRead     = USER_READ.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use USER_WRITE instead"]
+        static UserWrite    = USER_WRITE.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use USER_EXECUTE instead"]
+        static UserExecute  = USER_EXECUTE.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use GROUP_READ instead"]
+        static GroupRead    = GROUP_READ.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use GROUP_WRITE instead"]
+        static GroupWrite   = GROUP_WRITE.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use GROUP_EXECUTE instead"]
+        static GroupExecute = GROUP_EXECUTE.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use OTHER_READ instead"]
+        static OtherRead    = OTHER_READ.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use OTHER_WRITE instead"]
+        static OtherWrite   = OTHER_WRITE.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use OTHER_EXECUTE instead"]
+        static OtherExecute = OTHER_EXECUTE.bits,
+
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use USER_RWX instead"]
+        static UserRWX  = USER_RWX.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use GROUP_RWX instead"]
+        static GroupRWX = GROUP_RWX.bits,
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use OTHER_RWX instead"]
+        static OtherRWX = OTHER_RWX.bits,
+
+        #[doc = "Deprecated: use `USER_FILE` instead."]
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use USER_FILE instead"]
+        static UserFile = USER_FILE.bits,
+
+        #[doc = "Deprecated: use `USER_DIR` instead."]
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use USER_DIR instead"]
+        static UserDir  = USER_DIR.bits,
+        #[doc = "Deprecated: use `USER_EXEC` instead."]
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use USER_EXEC instead"]
+        static UserExec = USER_EXEC.bits,
+
+        #[doc = "Deprecated: use `ALL_PERMISSIONS` instead"]
+        #[allow(non_uppercase_statics)]
+        #[deprecated = "use ALL_PERMISSIONS instead"]
+        static AllPermissions = ALL_PERMISSIONS.bits,
     }
 }
 
@@ -1954,13 +2012,13 @@ mod tests {
     fn test_show() {
         use super::*;
 
-        assert_eq!(format!("{}", UserRead), "0400".to_string());
-        assert_eq!(format!("{}", UserFile), "0644".to_string());
-        assert_eq!(format!("{}", UserExec), "0755".to_string());
-        assert_eq!(format!("{}", UserRWX),  "0700".to_string());
-        assert_eq!(format!("{}", GroupRWX), "0070".to_string());
-        assert_eq!(format!("{}", OtherRWX), "0007".to_string());
-        assert_eq!(format!("{}", AllPermissions), "0777".to_string());
-        assert_eq!(format!("{}", UserRead | UserWrite | OtherWrite), "0602".to_string());
+        assert_eq!(format!("{}", USER_READ), "0400".to_string());
+        assert_eq!(format!("{}", USER_FILE), "0644".to_string());
+        assert_eq!(format!("{}", USER_EXEC), "0755".to_string());
+        assert_eq!(format!("{}", USER_RWX),  "0700".to_string());
+        assert_eq!(format!("{}", GROUP_RWX), "0070".to_string());
+        assert_eq!(format!("{}", OTHER_RWX), "0007".to_string());
+        assert_eq!(format!("{}", ALL_PERMISSIONS), "0777".to_string());
+        assert_eq!(format!("{}", USER_READ | USER_WRITE | OTHER_WRITE), "0602".to_string());
     }
 }
diff --git a/src/libstd/io/tempfile.rs b/src/libstd/io/tempfile.rs
index 9d6713b25b7..1d8aedb172b 100644
--- a/src/libstd/io/tempfile.rs
+++ b/src/libstd/io/tempfile.rs
@@ -48,7 +48,7 @@ impl TempDir {
                         unsafe { CNT.fetch_add(1, atomic::SeqCst) },
                         suffix);
             let p = tmpdir.join(filename);
-            match fs::mkdir(&p, io::UserRWX) {
+            match fs::mkdir(&p, io::USER_RWX) {
                 Err(error) => {
                     if attempts >= 1000 {
                         return Err(error)
diff --git a/src/test/run-pass/process-spawn-with-unicode-params.rs b/src/test/run-pass/process-spawn-with-unicode-params.rs
index de86ca179b7..f04bc62bf7f 100644
--- a/src/test/run-pass/process-spawn-with-unicode-params.rs
+++ b/src/test/run-pass/process-spawn-with-unicode-params.rs
@@ -51,7 +51,7 @@ fn main() {
         let child_path     = cwd.join(child_filename.clone());
 
         // make a separate directory for the child
-        drop(fs::mkdir(&cwd, io::UserRWX).is_ok());
+        drop(fs::mkdir(&cwd, io::USER_RWX).is_ok());
         assert!(fs::copy(&my_path, &child_path).is_ok());
 
         // run child
diff --git a/src/test/run-pass/rename-directory.rs b/src/test/run-pass/rename-directory.rs
index e1918335a14..43a62524717 100644
--- a/src/test/run-pass/rename-directory.rs
+++ b/src/test/run-pass/rename-directory.rs
@@ -26,7 +26,7 @@ fn rename_directory() {
         let tmpdir = TempDir::new("rename_directory").ok().expect("rename_directory failed");
         let tmpdir = tmpdir.path();
         let old_path = tmpdir.join_many(["foo", "bar", "baz"]);
-        fs::mkdir_recursive(&old_path, io::UserRWX);
+        fs::mkdir_recursive(&old_path, io::USER_RWX);
         let test_file = &old_path.join("temp.txt");
 
         /* Write the temp input file */
@@ -47,7 +47,7 @@ fn rename_directory() {
         assert_eq!(libc::fclose(ostream), (0u as libc::c_int));
 
         let new_path = tmpdir.join_many(["quux", "blat"]);
-        fs::mkdir_recursive(&new_path, io::UserRWX);
+        fs::mkdir_recursive(&new_path, io::USER_RWX);
         fs::rename(&old_path, &new_path.join("newdir"));
         assert!(new_path.join("newdir").is_dir());
         assert!(new_path.join_many(["newdir", "temp.txt"]).exists());
diff --git a/src/test/run-pass/tempfile.rs b/src/test/run-pass/tempfile.rs
index 322bdc8f3bb..64fd96bd924 100644
--- a/src/test/run-pass/tempfile.rs
+++ b/src/test/run-pass/tempfile.rs
@@ -128,17 +128,17 @@ fn recursive_mkdir_rel() {
     let cwd = os::getcwd();
     println!("recursive_mkdir_rel: Making: {} in cwd {} [{:?}]", path.display(),
            cwd.display(), path.exists());
-    fs::mkdir_recursive(&path, io::UserRWX);
+    fs::mkdir_recursive(&path, io::USER_RWX);
     assert!(path.is_dir());
-    fs::mkdir_recursive(&path, io::UserRWX);
+    fs::mkdir_recursive(&path, io::USER_RWX);
     assert!(path.is_dir());
 }
 
 fn recursive_mkdir_dot() {
     let dot = Path::new(".");
-    fs::mkdir_recursive(&dot, io::UserRWX);
+    fs::mkdir_recursive(&dot, io::USER_RWX);
     let dotdot = Path::new("..");
-    fs::mkdir_recursive(&dotdot, io::UserRWX);
+    fs::mkdir_recursive(&dotdot, io::USER_RWX);
 }
 
 fn recursive_mkdir_rel_2() {
@@ -146,20 +146,20 @@ fn recursive_mkdir_rel_2() {
     let cwd = os::getcwd();
     println!("recursive_mkdir_rel_2: Making: {} in cwd {} [{:?}]", path.display(),
            cwd.display(), path.exists());
-    fs::mkdir_recursive(&path, io::UserRWX);
+    fs::mkdir_recursive(&path, io::USER_RWX);
     assert!(path.is_dir());
     assert!(path.dir_path().is_dir());
     let path2 = Path::new("quux/blat");
     println!("recursive_mkdir_rel_2: Making: {} in cwd {}", path2.display(),
            cwd.display());
-    fs::mkdir_recursive(&path2, io::UserRWX);
+    fs::mkdir_recursive(&path2, io::USER_RWX);
     assert!(path2.is_dir());
     assert!(path2.dir_path().is_dir());
 }
 
 // Ideally this would be in core, but needs TempFile
 pub fn test_rmdir_recursive_ok() {
-    let rwx = io::UserRWX;
+    let rwx = io::USER_RWX;
 
     let tmpdir = TempDir::new("test").ok().expect("test_rmdir_recursive_ok: \
                                                    couldn't create temp dir");