Really disable core dump archiving on Linux

tools/utils.py

 # 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.
 
 # This file contains a set of utilities functions used by other Python-based
 # scripts.
 
 import commands
 import contextlib
 import datetime
@@ skipping 708 matching lines @@
   def __init__(self):
     self._old_limits = None
 
   def __enter__(self):
     self._old_limits = resource.getrlimit(resource.RLIMIT_CORE)
     resource.setrlimit(resource.RLIMIT_CORE, (-1, -1))
 
   def __exit__(self, *_):
     resource.setrlimit(resource.RLIMIT_CORE, self._old_limits)
 
+# TODO(whesse): Re-enable after issue #30205 is addressed
 class LinuxCoreDumpEnabler(PosixCoreDumpEnabler):
   def __enter__(self):
+    pass
     # Bump core limits to unlimited if core_pattern is correctly configured.
-    if CheckLinuxCoreDumpPattern(fatal=False):
-      super(LinuxCoreDumpEnabler, self).__enter__()
+    # if CheckLinuxCoreDumpPattern(fatal=False):
+    #   super(LinuxCoreDumpEnabler, self).__enter__()
 
   def __exit__(self, *args):
-    # TODO(whesse): Re-enable after issue #30205 is addressed
+    pass
     # CheckLinuxCoreDumpPattern(fatal=True)
-    super(LinuxCoreDumpEnabler, self).__exit__(*args)
+    # super(LinuxCoreDumpEnabler, self).__exit__(*args)
 
 class WindowsCoreDumpEnabler(object):
   """Configure Windows Error Reporting to store crash dumps.
 
   The documentation can be found here:
   https://msdn.microsoft.com/en-us/library/windows/desktop/bb787181.aspx
   """
 
   WINDOWS_COREDUMP_FOLDER = r'crashes'
 
@@ skipping 289 matching lines @@
     return contextlib.nested(WindowsCoreDumpEnabler(),
                              WindowsCoreDumpArchiver())
   else:
     # We don't have support for MacOS yet.
     assert osname == 'macos'
     return NooptCoreDumpArchiver()
 
 if __name__ == "__main__":
   import sys
   Main()