Bug#838954: Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(?

[積丹尼 Dan Jacobson]

Package: libpam-runtime

Setting up postgresql-9.6 (9.6~rc1-1+b1) ...
Unescaped left brace in regex is deprecated, passed through in regex; marked by 
<-- HERE in m/(?<!\\)\${ <-- HERE ([^}]+)}/ at /usr/sbin/pam_getenv line 78.