Start trying to track down why full_coverage_test is timing out all the time.

tests/standalone/standalone.status

 # Copyright (c) 2013, 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.
 
 # WARNING:
 # Tests using the multitest feature where failure is expected should *also* be
 # listed in tests/lib/analyzer/analyze_tests.status without the "standalone"
 # prefix.
 
 package/invalid_uri_test: Fail, OK # CompileTimeErrors intentionally
 package/scenarios/packages_file_strange_formatting/empty_package_dir_test: Fail, OK # CompileTimeErrors intentionally
 package/scenarios/empty_packages_file/empty_packages_file_discovery_test: Fail, OK # CompileTimeErrors intentionally
 package/scenarios/empty_packages_file/empty_packages_file_option_test: Fail, OK # CompileTimeErrors intentionally
 package/scenarios/invalid/invalid_package_name_test: RuntimeError, CompileTimeError # Errors intentionally
 package/scenarios/invalid/same_package_twice_test.dart: RuntimeError, CompileTimeError # Errors intentionally
+full_coverage_test: Pass, Slow
 
 
 issue14236_test: Pass # Do not remove this line. It serves as a marker for Issue 14516 comment #4.
 
 javascript_compatibility_errors_test/none: Fail, OK  # Not possible to exclude or annotate with '/// none:'
 
 [ ($runtime != vm && $runtime != dart_precompiled) && ($runtime != drt || $compiler != none)) ]
 no_assert_test: Fail, OK # This is testing a vm flag.
 
 [ ($runtime == vm || $runtime == dart_precompiled) ]
@@ skipping 254 matching lines @@
 io/test_runner_test: RuntimeError # Platform.executable
 io/file_lock_test: RuntimeError # Platform.executable
 io/code_collection_test: RuntimeError # Platform.executable
 io/file_lock_test: RuntimeError # Platform.executable
 io/code_collection_test: RuntimeError # Platform.executable
 io/raw_socket_cross_process_test: RuntimeError # Platform.executable
 io/test_extension_test: RuntimeError # Platform.executable
 io/regress_7679_test: RuntimeError # Platform.executable
 
 io/process_*: Skip # Most use Platform.executable