old_contents: #!/usr/bin/env python
  #
  # Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
  # file at the top-level directory of this distribution and at
  # http://rust-lang.org/COPYRIGHT.
  #
  # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  # option. This file may not be copied, modified, or distributed
  # except according to those terms.
  
  import os
  import sys
  import functools
  import resource
  
  STATUS = 0
  
  
  def error_unless_permitted(env_var, message):
      global STATUS
      if not os.getenv(env_var):
          sys.stderr.write(message)
          STATUS = 1
  
  
  def only_on(platforms):
      def decorator(func):
          @functools.wraps(func)
          def inner():
              if sys.platform in platforms:
                  func()
          return inner
      return decorator
  
  
  @only_on(('linux', 'darwin', 'freebsd', 'openbsd'))
  def check_rlimit_core():
      soft, hard = resource.getrlimit(resource.RLIMIT_CORE)
      if soft > 0:
          error_unless_permitted('ALLOW_NONZERO_ULIMIT',
            ("The rust test suite will segfault many rustc's in the debuginfo phase.\n"
             "set ALLOW_NONZERO_ULIMIT to ignore this warning\n"))
  
  
  def main():
      check_rlimit_core()
  
  if __name__ == '__main__':
      main()
      sys.exit(STATUS)
  
new_contents: #!/usr/bin/env python
  #
  # Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
  # file at the top-level directory of this distribution and at
  # http://rust-lang.org/COPYRIGHT.
  #
  # Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  # http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  # <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  # option. This file may not be copied, modified, or distributed
  # except according to those terms.
  
  import os
  import sys
  import functools
  import resource
  
  STATUS = 0
  
  
  def error_unless_permitted(env_var, message):
      global STATUS
      if not os.getenv(env_var):
          sys.stderr.write(message)
          STATUS = 1
  
  
  def only_on(platforms):
      def decorator(func):
          @functools.wraps(func)
          def inner():
              if any(map(lambda x: sys.platform.startswith(x), platforms)):
                  func()
          return inner
      return decorator
  
  
  @only_on(('linux', 'darwin', 'freebsd', 'openbsd'))
  def check_rlimit_core():
      soft, hard = resource.getrlimit(resource.RLIMIT_CORE)
      if soft > 0:
          error_unless_permitted('ALLOW_NONZERO_ULIMIT',
            ("The rust test suite will segfault many rustc's in the debuginfo phase.\n"
             "set ALLOW_NONZERO_ULIMIT to ignore this warning\n"))
  
  
  def main():
      check_rlimit_core()
  
  if __name__ == '__main__':
      main()
      sys.exit(STATUS)
  
subject: Fix the check for platform formatting