servo: Merge #10818 - Put each unexpected dynamic symbols on its own line (from askeing:fix_10797); r=nox

fix #10797

Source-Repo: https://github.com/servo/servo
Source-Revision: bc2a88ad8f41087356e4936829ee1095bd7fc951

servo/etc/ci/check_dynamic_symbols.py

@@ -7,6 +7,8 @@
 # option. This file may not be copied, modified, or distributed
 # except according to those terms.
 
+from __future__ import absolute_import, print_function
+
 import sys
 import re
 import subprocess
@@ -29,6 +31,6 @@ for line in objdump_output:
 difference = actual_symbols - allowed_symbols
 
 if len(difference) > 0:
-    human_readable_difference = ", ".join(str(s) for s in difference)
-    print("Unexpected dynamic symbols in binary: {0}".format(human_readable_difference))
+    human_readable_difference = "\n".join(str(s) for s in difference)
+    print("Unexpected dynamic symbols in binary:\n{0}".format(human_readable_difference))
     sys.exit(-1)