diff --git a/src/comp/driver/rustc.rs b/src/comp/driver/rustc.rs
index a947b14480a1e..5bb7e60a6849c 100644
--- a/src/comp/driver/rustc.rs
+++ b/src/comp/driver/rustc.rs
@@ -11,6 +11,7 @@ import syntax::print::{pp, pprust};
 import util::{ppaux, filesearch};
 import back::link;
 import core::{option, str, vec, int, result};
+import result::{ok, err};
 import std::{fs, io, getopts};
 import option::{some, none};
 import getopts::{optopt, optmulti, optflag, optflagopt, opt_present};
@@ -621,8 +622,8 @@ fn main(args: [str]) {
     let args = args, binary = vec::shift(args);
     let match =
         alt getopts::getopts(args, opts()) {
-          getopts::success(m) { m }
-          getopts::failure(f) {
+          ok(m) { m }
+          err(f) {
             early_error(getopts::fail_str(f))
           }
         };
@@ -670,7 +671,7 @@ mod test {
     fn test_switch_implies_cfg_test() {
         let match =
             alt getopts::getopts(["--test"], opts()) {
-              getopts::success(m) { m }
+              ok(m) { m }
             };
         let sessopts = build_session_options(match);
         let sess = build_session(sessopts);
@@ -684,7 +685,7 @@ mod test {
     fn test_switch_implies_cfg_test_unless_cfg_test() {
         let match =
             alt getopts::getopts(["--test", "--cfg=test"], opts()) {
-              getopts::success(m) { m }
+              ok(m) { m }
             };
         let sessopts = build_session_options(match);
         let sess = build_session(sessopts);
diff --git a/src/compiletest/compiletest.rs b/src/compiletest/compiletest.rs
index f85edd8378243..3f7ae912e9fe7 100644
--- a/src/compiletest/compiletest.rs
+++ b/src/compiletest/compiletest.rs
@@ -9,6 +9,9 @@ import str;
 import vec;
 import task;
 
+import core::result;
+import result::{ok, err};
+
 import comm::port;
 import comm::chan;
 import comm::send;
@@ -42,8 +45,8 @@ fn parse_config(args: [str]) -> config {
     let args_ = vec::tail(args);
     let match =
         alt getopts::getopts(args_, opts) {
-          getopts::success(m) { m }
-          getopts::failure(f) { fail getopts::fail_str(f) }
+          ok(m) { m }
+          err(f) { fail getopts::fail_str(f) }
         };
 
     ret {compile_lib_path: getopts::opt_str(match, "compile-lib-path"),
diff --git a/src/libstd/getopts.rs b/src/libstd/getopts.rs
index 115bcca8174b3..2443f7664b4e6 100644
--- a/src/libstd/getopts.rs
+++ b/src/libstd/getopts.rs
@@ -26,8 +26,8 @@ name following -o, and accepts both -h and --help as optional flags.
 >     optflag("help")
 >   ];
 >   let match = alt getopts(vec::shift(args), opts) {
->     success(m) { m }
->     failure(f) { fail fail_str(f) }
+>     ok(m) { m }
+>     err(f) { fail fail_str(f) }
 >   };
 >   if opt_present(match, "h") || opt_present(match, "help") {
 >     print_usage();
@@ -45,8 +45,10 @@ name following -o, and accepts both -h and --help as optional flags.
 
 */
 
+import core::result;
+import core::result::{err, ok};
 import core::option;
-import option::{some, none};
+import core::option::{some, none};
 export opt;
 export reqopt;
 export optopt;
@@ -54,9 +56,6 @@ export optflag;
 export optflagopt;
 export optmulti;
 export getopts;
-export result;
-export success;
-export failure;
 export match;
 export fail_;
 export fail_str;
@@ -193,13 +192,14 @@ fn fail_str(f: fail_) -> str {
 Type: result
 
 The result of parsing a command line with a set of options
+(result::t<match, fail_>)
 
 Variants:
 
-success(match) - Returned from getopts on success
-failure(fail_) - Returned from getopts on failure
+ok(match) - Returned from getopts on success
+err(fail_) - Returned from getopts on failure
 */
-tag result { success(match); failure(fail_); }
+type result = result::t<match, fail_>;
 
 /*
 Function: getopts
@@ -208,9 +208,9 @@ Parse command line arguments according to the provided options
 
 Returns:
 
-success(match) - On success. Use functions such as <opt_present>
-                 <opt_str>, etc. to interrogate results.
-failure(fail_) - On failure. Use <fail_str> to get an error message.
+ok(match) - On success. Use functions such as <opt_present>
+            <opt_str>, etc. to interrogate results.
+err(fail_) - On failure. Use <fail_str> to get an error message.
 */
 fn getopts(args: [str], opts: [opt]) -> result {
     let n_opts = vec::len::<opt>(opts);
@@ -258,12 +258,12 @@ fn getopts(args: [str], opts: [opt]) -> result {
                 let optid;
                 alt find_opt(opts, nm) {
                   some(id) { optid = id; }
-                  none. { ret failure(unrecognized_option(name_str(nm))); }
+                  none. { ret err(unrecognized_option(name_str(nm))); }
                 }
                 alt opts[optid].hasarg {
                   no. {
                     if !option::is_none::<str>(i_arg) {
-                        ret failure(unexpected_argument(name_str(nm)));
+                        ret err(unexpected_argument(name_str(nm)));
                     }
                     vals[optid] += [given];
                   }
@@ -279,7 +279,7 @@ fn getopts(args: [str], opts: [opt]) -> result {
                     if !option::is_none::<str>(i_arg) {
                         vals[optid] += [val(option::get::<str>(i_arg))];
                     } else if i + 1u == l {
-                        ret failure(argument_missing(name_str(nm)));
+                        ret err(argument_missing(name_str(nm)));
                     } else { i += 1u; vals[optid] += [val(args[i])]; }
                   }
                 }
@@ -293,17 +293,17 @@ fn getopts(args: [str], opts: [opt]) -> result {
         let occ = opts[i].occur;
         if occ == req {
             if n == 0u {
-                ret failure(option_missing(name_str(opts[i].name)));
+                ret err(option_missing(name_str(opts[i].name)));
             }
         }
         if occ != multi {
             if n > 1u {
-                ret failure(option_duplicated(name_str(opts[i].name)));
+                ret err(option_duplicated(name_str(opts[i].name)));
             }
         }
         i += 1u;
     }
-    ret success({opts: opts, vals: vals, free: free});
+    ret ok({opts: opts, vals: vals, free: free});
 }
 
 fn opt_vals(m: match, nm: str) -> [optval] {
diff --git a/src/libstd/test.rs b/src/libstd/test.rs
index fbb63844847c1..e04e5ec0b20a4 100644
--- a/src/libstd/test.rs
+++ b/src/libstd/test.rs
@@ -9,6 +9,7 @@ import task::task;
 import core::option;
 import core::either;
 import core::vec;
+import core::result::{ok, err};
 
 export test_name;
 export test_fn;
@@ -82,8 +83,8 @@ fn parse_opts(args: [str]) : vec::is_not_empty(args) -> opt_res {
     let opts = [getopts::optflag("ignored")];
     let match =
         alt getopts::getopts(args_, opts) {
-          getopts::success(m) { m }
-          getopts::failure(f) { ret either::right(getopts::fail_str(f)) }
+          ok(m) { m }
+          err(f) { ret either::right(getopts::fail_str(f)) }
         };
 
     let filter =
diff --git a/src/test/bench/shootout-pfib.rs b/src/test/bench/shootout-pfib.rs
index 482d4e05d5195..76680d9cd5064 100644
--- a/src/test/bench/shootout-pfib.rs
+++ b/src/test/bench/shootout-pfib.rs
@@ -27,6 +27,9 @@ import comm::chan;
 import comm::send;
 import comm::recv;
 
+import core::result;
+import result::{ok, err};
+
 fn fib(n: int) -> int {
     fn pfib(args: (chan<int>, int)) {
         let (c, n) = args;
@@ -58,8 +61,8 @@ fn parse_opts(argv: [str]) -> config {
 
 
     alt getopts::getopts(opt_args, opts) {
-      getopts::success(m) { ret {stress: getopts::opt_present(m, "stress")} }
-      getopts::failure(_) { fail; }
+      ok(m) { ret {stress: getopts::opt_present(m, "stress")} }
+      err(_) { fail; }
     }
 }
 
diff --git a/src/test/stdtest/getopts.rs b/src/test/stdtest/getopts.rs
index 3730a17e1816a..0cccbb4cb6ec8 100644
--- a/src/test/stdtest/getopts.rs
+++ b/src/test/stdtest/getopts.rs
@@ -2,6 +2,7 @@ import core::*;
 
 use std;
 import opt = std::getopts;
+import result::{err, ok};
 
 tag fail_type {
     argument_missing;
@@ -30,7 +31,7 @@ fn test_reqopt_long() {
     let opts = [opt::reqopt("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         assert (opt::opt_present(m, "test"));
         assert (opt::opt_str(m, "test") == "20");
       }
@@ -44,7 +45,7 @@ fn test_reqopt_long_missing() {
     let opts = [opt::reqopt("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, option_missing); }
+      err(f) { check_fail_type(f, option_missing); }
       _ { fail; }
     }
 }
@@ -55,7 +56,7 @@ fn test_reqopt_long_no_arg() {
     let opts = [opt::reqopt("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, argument_missing); }
+      err(f) { check_fail_type(f, argument_missing); }
       _ { fail; }
     }
 }
@@ -66,7 +67,7 @@ fn test_reqopt_long_multi() {
     let opts = [opt::reqopt("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, option_duplicated); }
+      err(f) { check_fail_type(f, option_duplicated); }
       _ { fail; }
     }
 }
@@ -77,7 +78,7 @@ fn test_reqopt_short() {
     let opts = [opt::reqopt("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         assert (opt::opt_present(m, "t"));
         assert (opt::opt_str(m, "t") == "20");
       }
@@ -91,7 +92,7 @@ fn test_reqopt_short_missing() {
     let opts = [opt::reqopt("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, option_missing); }
+      err(f) { check_fail_type(f, option_missing); }
       _ { fail; }
     }
 }
@@ -102,7 +103,7 @@ fn test_reqopt_short_no_arg() {
     let opts = [opt::reqopt("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, argument_missing); }
+      err(f) { check_fail_type(f, argument_missing); }
       _ { fail; }
     }
 }
@@ -113,7 +114,7 @@ fn test_reqopt_short_multi() {
     let opts = [opt::reqopt("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, option_duplicated); }
+      err(f) { check_fail_type(f, option_duplicated); }
       _ { fail; }
     }
 }
@@ -126,7 +127,7 @@ fn test_optopt_long() {
     let opts = [opt::optopt("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         assert (opt::opt_present(m, "test"));
         assert (opt::opt_str(m, "test") == "20");
       }
@@ -140,7 +141,7 @@ fn test_optopt_long_missing() {
     let opts = [opt::optopt("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) { assert (!opt::opt_present(m, "test")); }
+      ok(m) { assert (!opt::opt_present(m, "test")); }
       _ { fail; }
     }
 }
@@ -151,7 +152,7 @@ fn test_optopt_long_no_arg() {
     let opts = [opt::optopt("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, argument_missing); }
+      err(f) { check_fail_type(f, argument_missing); }
       _ { fail; }
     }
 }
@@ -162,7 +163,7 @@ fn test_optopt_long_multi() {
     let opts = [opt::optopt("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, option_duplicated); }
+      err(f) { check_fail_type(f, option_duplicated); }
       _ { fail; }
     }
 }
@@ -173,7 +174,7 @@ fn test_optopt_short() {
     let opts = [opt::optopt("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         assert (opt::opt_present(m, "t"));
         assert (opt::opt_str(m, "t") == "20");
       }
@@ -187,7 +188,7 @@ fn test_optopt_short_missing() {
     let opts = [opt::optopt("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) { assert (!opt::opt_present(m, "t")); }
+      ok(m) { assert (!opt::opt_present(m, "t")); }
       _ { fail; }
     }
 }
@@ -198,7 +199,7 @@ fn test_optopt_short_no_arg() {
     let opts = [opt::optopt("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, argument_missing); }
+      err(f) { check_fail_type(f, argument_missing); }
       _ { fail; }
     }
 }
@@ -209,7 +210,7 @@ fn test_optopt_short_multi() {
     let opts = [opt::optopt("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, option_duplicated); }
+      err(f) { check_fail_type(f, option_duplicated); }
       _ { fail; }
     }
 }
@@ -222,7 +223,7 @@ fn test_optflag_long() {
     let opts = [opt::optflag("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) { assert (opt::opt_present(m, "test")); }
+      ok(m) { assert (opt::opt_present(m, "test")); }
       _ { fail; }
     }
 }
@@ -233,7 +234,7 @@ fn test_optflag_long_missing() {
     let opts = [opt::optflag("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) { assert (!opt::opt_present(m, "test")); }
+      ok(m) { assert (!opt::opt_present(m, "test")); }
       _ { fail; }
     }
 }
@@ -244,7 +245,7 @@ fn test_optflag_long_arg() {
     let opts = [opt::optflag("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) {
+      err(f) {
         log_err opt::fail_str(f);
         check_fail_type(f, unexpected_argument);
       }
@@ -258,7 +259,7 @@ fn test_optflag_long_multi() {
     let opts = [opt::optflag("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, option_duplicated); }
+      err(f) { check_fail_type(f, option_duplicated); }
       _ { fail; }
     }
 }
@@ -269,7 +270,7 @@ fn test_optflag_short() {
     let opts = [opt::optflag("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) { assert (opt::opt_present(m, "t")); }
+      ok(m) { assert (opt::opt_present(m, "t")); }
       _ { fail; }
     }
 }
@@ -280,7 +281,7 @@ fn test_optflag_short_missing() {
     let opts = [opt::optflag("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) { assert (!opt::opt_present(m, "t")); }
+      ok(m) { assert (!opt::opt_present(m, "t")); }
       _ { fail; }
     }
 }
@@ -291,7 +292,7 @@ fn test_optflag_short_arg() {
     let opts = [opt::optflag("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         // The next variable after the flag is just a free argument
 
         assert (m.free[0] == "20");
@@ -306,7 +307,7 @@ fn test_optflag_short_multi() {
     let opts = [opt::optflag("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, option_duplicated); }
+      err(f) { check_fail_type(f, option_duplicated); }
       _ { fail; }
     }
 }
@@ -319,7 +320,7 @@ fn test_optmulti_long() {
     let opts = [opt::optmulti("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         assert (opt::opt_present(m, "test"));
         assert (opt::opt_str(m, "test") == "20");
       }
@@ -333,7 +334,7 @@ fn test_optmulti_long_missing() {
     let opts = [opt::optmulti("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) { assert (!opt::opt_present(m, "test")); }
+      ok(m) { assert (!opt::opt_present(m, "test")); }
       _ { fail; }
     }
 }
@@ -344,7 +345,7 @@ fn test_optmulti_long_no_arg() {
     let opts = [opt::optmulti("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, argument_missing); }
+      err(f) { check_fail_type(f, argument_missing); }
       _ { fail; }
     }
 }
@@ -355,7 +356,7 @@ fn test_optmulti_long_multi() {
     let opts = [opt::optmulti("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         assert (opt::opt_present(m, "test"));
         assert (opt::opt_str(m, "test") == "20");
         assert (opt::opt_strs(m, "test")[0] == "20");
@@ -371,7 +372,7 @@ fn test_optmulti_short() {
     let opts = [opt::optmulti("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         assert (opt::opt_present(m, "t"));
         assert (opt::opt_str(m, "t") == "20");
       }
@@ -385,7 +386,7 @@ fn test_optmulti_short_missing() {
     let opts = [opt::optmulti("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) { assert (!opt::opt_present(m, "t")); }
+      ok(m) { assert (!opt::opt_present(m, "t")); }
       _ { fail; }
     }
 }
@@ -396,7 +397,7 @@ fn test_optmulti_short_no_arg() {
     let opts = [opt::optmulti("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, argument_missing); }
+      err(f) { check_fail_type(f, argument_missing); }
       _ { fail; }
     }
 }
@@ -407,7 +408,7 @@ fn test_optmulti_short_multi() {
     let opts = [opt::optmulti("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         assert (opt::opt_present(m, "t"));
         assert (opt::opt_str(m, "t") == "20");
         assert (opt::opt_strs(m, "t")[0] == "20");
@@ -423,7 +424,7 @@ fn test_unrecognized_option_long() {
     let opts = [opt::optmulti("t")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, unrecognized_option); }
+      err(f) { check_fail_type(f, unrecognized_option); }
       _ { fail; }
     }
 }
@@ -434,7 +435,7 @@ fn test_unrecognized_option_short() {
     let opts = [opt::optmulti("test")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::failure(f) { check_fail_type(f, unrecognized_option); }
+      err(f) { check_fail_type(f, unrecognized_option); }
       _ { fail; }
     }
 }
@@ -449,7 +450,7 @@ fn test_combined() {
          opt::optflag("f"), opt::optmulti("m"), opt::optopt("notpresent")];
     let rs = opt::getopts(args, opts);
     alt rs {
-      opt::success(m) {
+      ok(m) {
         assert (m.free[0] == "prog");
         assert (m.free[1] == "free1");
         assert (opt::opt_str(m, "s") == "20");