[GNU Autoconf 2.68] testsuite: 486 failed

[Strokin Andrew]

#                             -*- compilation -*-
486. autoscan.at:20: testing autoscan ...
./autoscan.at:44: autoscan
--- /dev/null    2017-10-24 11:56:15.400000624 +0400
+++ /home/user/autoconf-2.68/tests/testsuite.dir/at-groups/486/stderr    
2017-10-24 18:23:18.080729798 +0400
@@ -0,0 +1 @@
+Unescaped left brace in regex is deprecated, passed through in regex; marked 
by <-- HERE in m/\${ <-- HERE [^\}]*}/ at /home/user/autoconf-2.68/bin/autoscan 
line 362.
486. autoscan.at:20: 486. autoscan (autoscan.at:20): FAILED (autoscan.at:44)