diff --git a/src/librustc/driver/driver.rs b/src/librustc/driver/driver.rs
index b0fa22f8172..7d5846ebd6a 100644
--- a/src/librustc/driver/driver.rs
+++ b/src/librustc/driver/driver.rs
@@ -686,7 +686,7 @@ pub fn host_triple() -> ~str {
     (env!("CFG_COMPILER")).to_owned()
 }
 
-pub fn build_session_options(binary: @str,
+pub fn build_session_options(binary: ~str,
                              matches: &getopts::Matches,
                              demitter: @diagnostic::Emitter)
                              -> @session::options {
@@ -1105,7 +1105,7 @@ pub fn build_output_filenames(input: &input,
     }
 }
 
-pub fn early_error(emitter: @diagnostic::Emitter, msg: &str) -> ! {
+pub fn early_error(emitter: &diagnostic::Emitter, msg: &str) -> ! {
     emitter.emit(None, msg, diagnostic::fatal);
     fail!();
 }
@@ -1135,7 +1135,7 @@ mod test {
               Err(f) => fail!("test_switch_implies_cfg_test: {}", f.to_err_msg())
             };
         let sessopts = build_session_options(
-            @"rustc",
+            ~"rustc",
             matches,
             @diagnostic::DefaultEmitter as @diagnostic::Emitter);
         let sess = build_session(sessopts,
@@ -1158,7 +1158,7 @@ mod test {
               }
             };
         let sessopts = build_session_options(
-            @"rustc",
+            ~"rustc",
             matches,
             @diagnostic::DefaultEmitter as @diagnostic::Emitter);
         let sess = build_session(sessopts,
diff --git a/src/librustc/driver/session.rs b/src/librustc/driver/session.rs
index 63ccc91cd55..55822b66ae4 100644
--- a/src/librustc/driver/session.rs
+++ b/src/librustc/driver/session.rs
@@ -163,7 +163,7 @@ pub struct options {
     // will be added to the crate AST node.  This should not be used for
     // anything except building the full crate config prior to parsing.
     cfg: ast::CrateConfig,
-    binary: @str,
+    binary: ~str,
     test: bool,
     parse_only: bool,
     no_trans: bool,
@@ -395,7 +395,7 @@ pub fn basic_options() -> @options {
         target_cpu: ~"generic",
         target_feature: ~"",
         cfg: ~[],
-        binary: @"rustc",
+        binary: ~"rustc",
         test: false,
         parse_only: false,
         no_trans: false,
diff --git a/src/librustc/lib.rs b/src/librustc/lib.rs
index a5ec422699d..5ce25513399 100644
--- a/src/librustc/lib.rs
+++ b/src/librustc/lib.rs
@@ -197,7 +197,7 @@ pub fn describe_debug_flags() {
 
 pub fn run_compiler(args: &[~str], demitter: @diagnostic::Emitter) {
     let mut args = args.to_owned();
-    let binary = args.shift().to_managed();
+    let binary = args.shift();
 
     if args.is_empty() { usage(binary); return; }
 
diff --git a/src/librustdoc/core.rs b/src/librustdoc/core.rs
index 18891d38d38..63b92394365 100644
--- a/src/librustdoc/core.rs
+++ b/src/librustdoc/core.rs
@@ -49,7 +49,7 @@ fn get_ast_and_resolve(cpath: &Path,
     let input = file_input(cpath.clone());
 
     let sessopts = @driver::session::options {
-        binary: @"rustdoc",
+        binary: ~"rustdoc",
         maybe_sysroot: Some(@os::self_exe_path().unwrap().dir_path()),
         addl_lib_search_paths: @RefCell::new(libs),
         outputs: ~[driver::session::OutputDylib],
diff --git a/src/librustdoc/test.rs b/src/librustdoc/test.rs
index b21b1db955f..480ace2e419 100644
--- a/src/librustdoc/test.rs
+++ b/src/librustdoc/test.rs
@@ -38,7 +38,7 @@ pub fn run(input: &str, matches: &getopts::Matches) -> int {
     let libs = @RefCell::new(libs.move_iter().collect());
 
     let sessopts = @session::options {
-        binary: @"rustdoc",
+        binary: ~"rustdoc",
         maybe_sysroot: Some(@os::self_exe_path().unwrap().dir_path()),
         addl_lib_search_paths: libs,
         outputs: ~[session::OutputDylib],
@@ -98,7 +98,7 @@ fn runtest(test: &str, cratename: &str, libs: HashSet<Path>) {
     let input = driver::str_input(test);
 
     let sessopts = @session::options {
-        binary: @"rustdoctest",
+        binary: ~"rustdoctest",
         maybe_sysroot: Some(@os::self_exe_path().unwrap().dir_path()),
         addl_lib_search_paths: @RefCell::new(libs),
         outputs: ~[session::OutputExecutable],
diff --git a/src/librustpkg/lib.rs b/src/librustpkg/lib.rs
index 2b54a6d6f1c..ae58495fa8a 100644
--- a/src/librustpkg/lib.rs
+++ b/src/librustpkg/lib.rs
@@ -101,7 +101,7 @@ impl<'a> PkgScript<'a> {
                  workspace: &Path,
                  id: &'a CrateId) -> PkgScript<'a> {
         // Get the executable name that was invoked
-        let binary = os::args()[0].to_managed();
+        let binary = os::args()[0].to_owned();
         // Build the rustc session data structures to pass
         // to the compiler
         debug!("pkgscript parse: {}", sysroot.display());
diff --git a/src/librustpkg/tests.rs b/src/librustpkg/tests.rs
index 7f6342dba5c..2ceed4f3df7 100644
--- a/src/librustpkg/tests.rs
+++ b/src/librustpkg/tests.rs
@@ -1823,7 +1823,7 @@ fn test_linker_build() {
     let workspace = create_local_package(&p_id);
     let workspace = workspace.path();
     let matches = getopts([], optgroups());
-    let options = build_session_options(@"rustpkg",
+    let options = build_session_options(~"rustpkg",
                                         matches.as_ref().unwrap(),
                                         @diagnostic::DefaultEmitter as
                                             @diagnostic::Emitter);
diff --git a/src/librustpkg/util.rs b/src/librustpkg/util.rs
index af940e34789..87657f729f9 100644
--- a/src/librustpkg/util.rs
+++ b/src/librustpkg/util.rs
@@ -189,7 +189,7 @@ pub fn compile_input(context: &BuildContext,
     // Make the output directory if it doesn't exist already
     fs::mkdir_recursive(&out_dir, io::UserRWX);
 
-    let binary = os::args()[0].to_managed();
+    let binary = os::args()[0].to_owned();
 
     debug!("flags: {}", flags.connect(" "));
     debug!("cfgs: {}", cfgs.connect(" "));