Fix dart2dart status for tests/lib.

tests/lib/lib.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.
 
 [ $compiler == dart2js ]
 math/*: Skip
 mirrors/mirrors_test: Fail # TODO(ahe): I'm working on fixing this.
 mirrors/library_uri_io_test: Skip # Not intended for dart2js as it uses dart:io.
 async/run_async3_test: Fail # _enqueueImmediate runs after Timer. http://dartbug.com/9002
 async/run_async4_test: Pass, Fail # no global exception handler in isolates. http://dartbug.com/9012
@@ skipping 40 matching lines @@
 async/stream_periodic2_test: Fail # Timer interface not supported; dartbug.com/7728.
 async/stream_periodic3_test: Fail # Timer interface not supported; dartbug.com/7728.
 async/stream_periodic4_test: Fail # Timer interface not supported; dartbug.com/7728.
 async/stream_periodic5_test: Fail # Timer interface not supported; dartbug.com/7728.
 
 [ $compiler == dart2js && $browser ]
 crypto/sha256_test: Slow, Pass
 crypto/sha1_test: Slow, Pass
 async/timer_not_available_test: Fail, OK # only meant to test when there is no way to
                                          # implement timer (currently only in d8)
+
+[ $compiler == dart2dart ]
+mirrors/mirrors_test: Fail              # Issue 10957
+mirrors/library_uri_package_test: Fail  # Issue 10957
+async/run_async6_test: Fail             # Issue 10957 - may be related to issue 10910
+
 [ $runtime == safari]
  # Bug in JSC: the test only passes when being debugged.
 crypto/hmac_md5_test: Fail, Pass
 
 [ $runtime == ff ]
 # FF setTimeout can fire early: https://bugzilla.mozilla.org/show_bug.cgi?id=291386
 multiple_timer_test: Pass, Fail
 timer_isolate_test: Pass, Fail
 timer_test: Pass, Fail
 
@@ skipping 20 matching lines @@
 async/run_async6_test: Fail # Issue 10910
 
 [ $arch == simarm ]
 *: Skip
 
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
 *: Skip