Mark scheduled_server_test as flaky and increase the timeout on the other scheduled tests.

pkg/pkg.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.
 
 # Run this test manually to verify that the fixnum library produces
 # the same results as native ints on a set of directed and random inputs.
 # Skip it when running automated tests because it times out.  This
 # test only makes sense on runtimes that support 64-bit integer
 # arithmetic natively, i.e., the VM.
 fixnum/test/int_64_vm_test: Skip
 
 # Skip non-test files ending with "_test".
 scheduled_test/lib/*: Skip
 
 scheduled_test/test/scheduled_test_test: Pass, Slow # Issue 9231
-scheduled_test/test/scheduled_server_test: Pass, Slow # Issue 9231
+scheduled_test/test/scheduled_server_test: Pass, Fail, Slow # Issue 9231, 9582
 scheduled_test/test/descriptor_test: Pass, Slow # Issue 9231
 
 # WebDriver tests have 3rd party dependencies (we need to run
 # selenium_standalone.jar), so we skip these in our automated
 # testing.
 webdriver/test/webdriver_test: Skip
 
 [$compiler == none && $runtime == vm]
 intl/test/date_time_format_file_even_test: Pass, Crash # Issue 9342
 intl/test/date_time_format_file_odd_test: Pass, Crash # Issue 9342
@@ skipping 109 matching lines @@
 [ $arch == mips ]
 *: Skip
 
 [ $arch == simmips ]
 *: Skip
 
 # Skip serialization test that explicitly has no library declaration in the
 # test on Dartium, which requires all tests to have a library.
 [ $runtime == dartium || $runtime == drt ]
 serialization/test/no_library_test: Skip # Expected Failure