Tests: shut up warnings for TODO tests. Recent versions of Test::Simple/More/Builder (0.61+) throw warnings on undef in like(). While this is good for working tests, it's not for TODO ones. Other tricky part is that neither "no warnings" pragma nor $^W can be used to avoid warnings. The only way that works is to redefine $SIG{__WARN__}.

--- a/proxy-noclose.t
+++ b/proxy-noclose.t
@@ -79,6 +79,7 @@ EOF
 
 TODO: {
 local $TODO = 'not fixed yet, patches under review';
+local $SIG{__WARN__} = sub {};
 
 like(http_get('/'), qr/SEE-THIS/, 'request to bad backend');
 like(http_get('/multi'), qr/AND-THIS/, 'bad backend - multiple packets');