--- ruby-2.4.1/test/ruby/test_file_exhaustive.rb	2016-12-07 02:19:29.000000000 +0000
+++ test_file_exhaustive.rb	2017-09-17 14:54:33.000000000 +0100
@@ -70,7 +70,7 @@
   def notownedfile
     return @notownedfile if defined? @notownedfile
     if Process.euid != 0
-      @notownedfile = '/'
+      @notownedfile = '/tmp'
     else
       @notownedfile = nil
     end