datalistelement_test seems to be flaky on Safari 5.1 (and/or there is no

tests/html/html.status

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 window_open_test: Fail, Pass # http://dartbug.com/5151
 
 event_test: Skip  # Issue 1996
 webgl_1_test: Skip  # Issue 1495
 xmldocument_test: Skip  # XML in dart:html is incomplete
 xmlelement_test: Skip  # XML in dart:html is incomplete
@@ skipping 108 matching lines @@
 contentelement_test: Fail # Safari 6 does not support content element.
 # The following tests all fail in Safari 5.1. (NOT Mountain Lion). These will go
 # away after we upgrade the buildbots to Mountain Lion after M1.
 # TODO(efortuna): Make our test framework able to separate tests out by browser
 # version.
 audiocontext_test: Fail
 blob_constructor_test: Fail
 canvas_pixel_array_type_alias_test: Fail
 canvas_test: Fail
 canvas_using_html_test: Fail
-datalistelement_test: Fail
+datalistelement_test: Pass,Fail
 document_test: Fail
 dom_constructors_test: Fail
 element_add_test: Fail
 element_constructor_1_test: Fail
 element_test: Fail
 exceptions_test: Fail
 instance_of_test: Fail
 mutationobserver_test: Fail
 native_gc_test: Fail
 node_test: Fail
@@ skipping 80 matching lines @@
 css_test: Pass, Fail # Issue #2823
 
 [ $compiler == dart2js && $runtime == ff && $system == windows]
 js_interop_2_test: Fail # Issue 4658.
 js_interop_3_test: Fail # Issue 4658.
 
 [ $compiler == dart2js && $checked && $browser]
 fileapi_test: Fail # TypeError: Object #<DirectoryEntry> has no method 'get$name'
 cross_frame_test: Fail # Caught NoSuchMethodError : method not found: 'is$_WindowImpl'
 window_open_test: Fail # Caught NoSuchMethodError : method not found: 'is$_WindowImpl'